EP1063406A1 - Piping system having a throttle valve - Google Patents

Piping system having a throttle valve Download PDF

Info

Publication number
EP1063406A1
EP1063406A1 EP00111985A EP00111985A EP1063406A1 EP 1063406 A1 EP1063406 A1 EP 1063406A1 EP 00111985 A EP00111985 A EP 00111985A EP 00111985 A EP00111985 A EP 00111985A EP 1063406 A1 EP1063406 A1 EP 1063406A1
Authority
EP
European Patent Office
Prior art keywords
section
throttle valve
cross
internal combustion
combustion engine
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP00111985A
Other languages
German (de)
French (fr)
Other versions
EP1063406B1 (en
Inventor
Helmut Spannbauer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mann and Hummel GmbH
Original Assignee
Filterwerk Mann and Hummel GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Filterwerk Mann and Hummel GmbH filed Critical Filterwerk Mann and Hummel GmbH
Publication of EP1063406A1 publication Critical patent/EP1063406A1/en
Application granted granted Critical
Publication of EP1063406B1 publication Critical patent/EP1063406B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/10006—Air intakes; Induction systems characterised by the position of elements of the air intake system in direction of the air intake flow, i.e. between ambient air inlet and supply to the combustion chamber
    • F02M35/10013—Means upstream of the air filter; Connection to the ambient air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
    • F02D9/08—Throttle valves specially adapted therefor; Arrangements of such valves in conduits
    • F02D9/10—Throttle valves specially adapted therefor; Arrangements of such valves in conduits having pivotally-mounted flaps
    • F02D9/1035—Details of the valve housing
    • F02D9/104—Shaping of the flow path in the vicinity of the flap, e.g. having inserts in the housing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/10242—Devices or means connected to or integrated into air intakes; Air intakes combined with other engine or vehicle parts
    • F02M35/10255—Arrangements of valves; Multi-way valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/12—Intake silencers ; Sound modulation, transmission or amplification
    • F02M35/1205—Flow throttling or guiding
    • F02M35/1222—Flow throttling or guiding by using adjustable or movable elements, e.g. valves, membranes, bellows, expanding or shrinking elements

Definitions

  • the invention relates to a line system with a throttle valve, in particular an intake tract an internal combustion engine, according to the preamble of claim 1.
  • the invention relates to a throttle valve for installation in this line system according to the preamble of claim 6.
  • the invention relates to a method for controlling a throttle valve according to the preamble of the claim 7.
  • the intake pipe of the internal combustion engine then has two partial cross sections, the be separated from each other by a partition.
  • the throttle valve is located only in one of the partial cross-sections, resulting in low engine speeds a partial cross section of the intake pipe can be closed. This leaves achieve a reduction in intake noise.
  • the object of the invention is therefore a device for narrowing the cross section to create a piping system that is reliable in operation and inexpensive is in production and has a favorable acoustic behavior.
  • the line system according to the invention has a throttle valve which can be pivoted is arranged in a cross section of the line system.
  • the pipe system leads to a throttling fluid.
  • the throttle valve is dimensioned that it leaves a residual cross-section free in the closed position.
  • Closed position means the position of the throttle valve in which it is the maximum area of the cross section to be throttled is covered. Is the throttle just executed, the closed position is reached when the throttle valve surface is perpendicular to the fluid flow.
  • the throttle valve In this closed position, however, is compared to conventional throttle valves the remaining cross-section is still available for the passage of the fluid. Will the Throttle valve used in the intake area of an internal combustion engine, so a complete closure of the intake cross section is not desired. Therefore, the throttle valve can be dimensioned so that it is in the closed position cannot completely cover the cross-section.
  • the vertical orientation the flap is acoustically very advantageous. That way Sound waves from the internal combustion engine through the intake tract to the mouth of the intake pipe, reflected by the throttle valve. This leads to a Reduction of intake noise because the sound waves do not pass through the system can leave the suction opening. The reflected sound waves are the incoming overlaid, which can lead to partial or complete deletion.
  • the intake noise of the internal combustion engine can above all be reduced in the lower and middle speed range.
  • Whistling noises as they occur with conventional throttle valves, if they are closed except for a gap.
  • the remaining cross section is advantageously annular around the throttle valve arranged.
  • the throttle valve does not have to be round. It’s the same an oval or angular design is conceivable, the cross section of the line system must fit the shape of the flap.
  • the throttle valve can be driven by various actuators. It offer z. B. electric stepper motors or continuously adjustable U-boxes. A stepped adjustment of the throttle valve is also conceivable. Even an embodiment with only two stages, i.e. closed and open throttle valve, which can be controlled inexpensively by a vacuum box the acoustic advantages described. However, the acoustics of the Intake pipe no longer continuously to the operating behavior of the internal combustion engine to adjust. Rather, operational areas are to be defined in which the different Switch positions of the throttle valve are used.
  • the venturi-shaped course of the pipe also has an effect favorably on the acoustics of the intake manifold.
  • the throttle valve does not have to be round. Rather, it can take various forms have, e.g. B. be rectangular.
  • the cross section of the associated line section must be adapted to the shape of the flap. Accordingly, the the throttle valve surrounding and delimited by the walls of the line system
  • the remaining cross section should not be circular.
  • the annular residual cross section rather adapts to the contours. Important when designing the remaining cross-section is just that no areas regardless of the flap position arise in which the distance between the edge of the flap and the wall of the pipe system becomes so low that whistling noises can occur.
  • the acoustic effects described can be used particularly efficiently if the remaining cross section an area share of 10% to 40% of the total area of the Cross section in which the throttle valve is located. This means on the one hand a sufficiently large cross section for the operating states of the engine with maximum Air requirement available, on the other hand, the cross section can be effective by reducing the throttle valve.
  • a throttle valve has the advantages according to the invention, which are obtained during installation in the already described piping system for optimal results regarding the acoustics of the pipe system. This means that flow noise of the fluid to be conducted is reduced and sound waves inside the piping system be dampened.
  • a method is applied according to claim 7, in which the Flap position depending on the amount of the internal combustion engine Combustion air is adjusted. Different parameters can be used as measured variables be used.
  • a simple and inexpensive solution results if as the manipulated variable for the flap angle ⁇ , the speed n of the internal combustion engine is being used. In most engine operating states, this is all in one proportional ratio to its air requirement.
  • the throttle valve At low speeds, then the throttle valve will be closed more and more until it is in its closed position reached. In the upper speed range, the throttle valve is opened completely, so that only the projection of the folding edge the cross section of the intake tract narrowed.
  • the procedure for controlling the throttle valve must always ensure that the internal combustion engine in any operating state with the minimum required Air volume is supplied. However, it can be useful in certain operating states not to limit the air to the necessary minimum, but a larger one To provide intake cross-section. This has the consequence that the intake noise is greater than the minimum value that can be achieved. This is e.g. B. in the acceleration phase of the engine makes sense to give the driver an acoustic feedback to enable the internal combustion engine. This allows the switching times for the corridors to recognize better. However, if the engine is to last for a long time are operated at a constant speed, the lowest possible intake noise wanted.
  • Appropriate control of the throttle valve can be achieved if additionally the acceleration of the engine is detected as a signal.
  • an additional detection of the negative pressure present in the intake manifold Represent controlled variable with which the internal combustion engine is deficient Combustion air can be prevented in any case.
  • FIG. 1 the intake tract of an internal combustion engine 10 is shown schematically. This consists of a venturi-shaped intake 11, an air filter 12, an intake manifold 13 leading to individual cylinders 14, an exhaust 15 the Guaranteed discharge of the burned gases.
  • a throttle valve 16 is accommodated in the narrowest cross section 17 of the venturi tube.
  • the throttle valve 16 according to FIG. 1 is in the fully open state shown.
  • the throttle valve is started from an inlet 18 of the intake manifold flowed to what is indicated by an arrow.
  • the position ⁇ of the throttle valve is set via a stepper motor 19.
  • the Setting is carried out via a control unit 20, the various manipulated variables of the Intake tract evaluates to determine the throttle valve position. For one, can the negative pressure p in the intake manifold can be measured. In addition, the Engine speed n determined, the speed signal can still be below With the help of a timer 21, which supplies the signal t, to determine the Acceleration n can be used.
  • FIG. 2 shows an example of the structural design of the invention Throttle valve 16.
  • the throttle valve is in one piece with a valve shaft 22 and Support ribs 23 made. This unit is injection molded into a flap frame 24, so that there is a throttle valve module 25.
  • This can be used as a standard component can be installed in different pipe systems, including the scope three mounting flanges 26 with holes 27 for screws attached are.
  • the throttle valve is shown in the closed position. Between a flap edge 28 and an inner wall 29 of the flap frame 24 has a residual cross section 30, which can be flowed through by the fluid.
  • the flap can now be opened continuously whereby a by projecting the flap edges on the cross section 17 and opening cross-section bordered by the inner edge of the remaining cross-section always opens further.
  • the maximum opening cross section 31 when fully open Flap is indicated in Figure 2, with the edge of the opening cross section in this Case is formed by the valve shaft 22.
  • the fluid through which the fluid can flow effectively Cross section is calculated from the sum of the remaining cross section and the Opening cross section formed.
  • FIG. 3 The effect of the throttle valve adjustment is shown in FIG. 3.
  • the throttle valve position is adjusted depending on the speed n.
  • the fully closed throttle valve covers 81% of the cross-sectional area.
  • the dashed curves show the intake noise at various throttle valve positions on. It becomes clear that by gradually closing the Throttle valve up to the remaining cross section the intake noise by up to 18 dB can be lowered.
  • the throttle valve can be used to increase the intake noise during the acceleration phase but can also be opened faster than necessary. This increases in these areas the intake noise of the internal combustion engine and enables this way an acoustic feedback for the driver.
  • This mode is represented by curve b.
  • the throttle valve is discontinuous in relation to Speed adjusted. In this way, the intake noise can be influenced as desired, whereby customer requests for a sound design can also be met.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
  • Characterised By The Charging Evacuation (AREA)

Abstract

A throttle plate (16) is pivotable in the cross-section (17) of a pipe system. When in its closed position, the throttle plate leaves open a residual cross-section through which fluid to be throttled can flow. The throttle plate may be arranged in the narrowest section of a pipe section with a veturi-shaped cross-sectional profile, esp. an inlet manifold. The throttle plate may be arranged in the inlet region of the intake manifold. The residual cross-section may be ring-shaped and between 10 and 40 per cent of the total area of the cross-section. An Independent claim is included for a method of controlling a throttle in an internal combustion engine.

Description

Stand der TechnikState of the art

Die Erfindung betrifft ein Leitungssystem mit Drosselklappe, insbesondere einen Ansaugtrakt einer Brennkraftmaschine, nach der Gattung des Patentanspruches 1. Außerdem betrifft die Erfindung eine Drosselklappe zum Einbau in dieses Leitungssystem nach der Gattung des Patentanspruches 6. Ferner bezieht sich die Erfindung auf ein Verfahren zur Steuerung einer Drosselklappe nach der Gattung des Patentanspruches 7.The invention relates to a line system with a throttle valve, in particular an intake tract an internal combustion engine, according to the preamble of claim 1. In addition The invention relates to a throttle valve for installation in this line system according to the preamble of claim 6. Furthermore, the invention relates to a method for controlling a throttle valve according to the preamble of the claim 7.

Es ist allgemein bekannt, den Querschnitt eines Ansaugtraktes einer Brennkraftmaschine für Verbrennungsluft mit Hilfe von Drosselklappen zu schließen und zu öffnen. Außerdem können diese Klappen auch in teilweise geöffnetem Zustand verwendet werden. Diese Nutzung bietet den Vorteil, das Ansauggeräusch in den Betriebsbereichen des Motors zu reduzieren, in denen nicht der vollständige Querschnitt des Ansaugtraktes zur Versorgung mit Verbrennungsluft benötigt wird. Dies geschieht durch teilweises Schließen der Drosselklappe. Dabei soll der Flächenquerschnitt des rohluftseitigen Strömungskanals in Anpassung an den Betriebszustand möglichst eng gehalten werden. Im Vollleistungs-Arbeitspunkt wird die Luftzufuhr zum Motor durch eine vollständige Öffnung des Rohrquerschnitts gewährleistet. Der verbleibende Flächenquerschnitt zwischen Rohrwandung und Drosselklappe kann z. B. proportional zum erforderlichen Massenstrom eingestellt werden. Dies bewirkt in erster Näherung immer dieselbe mittlere Strömungsgeschwindigkeit im Bereich der Drosselklappe.It is generally known the cross section of an intake tract of an internal combustion engine for combustion air to close and open with the help of throttle valves. In addition, these flaps can also be used in a partially open state become. This use has the advantage of the intake noise in the operating areas reduce the engine in which not the full cross section of the intake tract is required to supply combustion air. This happens by partially closing the throttle valve. The cross-sectional area should of the flow channel on the raw air side in adaptation to the operating state be kept as tight as possible. The air supply is at full power to the engine through a complete opening of the pipe cross section. The remaining cross-sectional area between pipe wall and throttle valve can e.g. B. can be set proportional to the required mass flow. This causes in first approximation always the same mean flow velocity in the range of Throttle.

Die stufenlose Verstellung der Drosselklappe wirft jedoch Probleme auf. Bei kleinen benötigten Flächenquerschnitten ergeben sich zwischen Rohrwandung und Drosselklappe schmale Spalte, die zu ungünstigen Strömungsbedingungen führen können. Insbesondere, wenn die Drosselklappe und der Rohrquerschnitt rund ausgeführt sind kann durch die sichelförmigen Spalte ein Pfeifgeräusch entstehen, welches unangenehmer auffällt, als das zu vermeidende Ansauggeräusch.However, the continuous adjustment of the throttle valve poses problems. With small ones required cross-sections of the surface result between the pipe wall and the throttle valve narrow gaps that can lead to unfavorable flow conditions. Especially if the throttle valve and the pipe cross-section are round the crescent-shaped column can cause a whistling noise, which is more unpleasant stands out as the intake noise to be avoided.

Eine Lösungsmöglichkeit dieses Problems wird in der EP 889 228 vorgeschlagen. Danach weist das Ansaugrohr der Brennkraftmaschine zwei Teilquerschnitte auf, die durch eine Zwischenwand voneinander getrennt werden. Die Drosselklappe befindet sich nur in einem der Teilquerschnitte, wodurch bei geringen Drehzahlen des Motors der eine Teilquerschnitt des Ansaugrohrs verschlossen werden kann. Hierdurch läßt sich eine Reduzierung des Ansauggeräusches erzielen.A solution to this problem is proposed in EP 889 228. The intake pipe of the internal combustion engine then has two partial cross sections, the be separated from each other by a partition. The throttle valve is located only in one of the partial cross-sections, resulting in low engine speeds a partial cross section of the intake pipe can be closed. This leaves achieve a reduction in intake noise.

Das Mehrkammerprofil für die beschriebene Ansaugvorrichtung verursacht jedoch zusätzliche Kosten. Es entsteht ein höherer Materialaufwand, der nicht zuletzt auch zu einer Erhöhung des Gesamtgewichtes der Ansaugvorrichtung führt, und die Fertigung wird erschwert. Darunter leidet die Wirtschaftlichkeit der vorgeschlagenen Lösung, weswegen deren Verwendung zumindest bei kostengünstigen Varianten von Motorbaureihen ausgeschlossen werden muß.However, the multi-chamber profile for the suction device described causes additional costs. There is a higher cost of materials, not least also leads to an increase in the total weight of the suction device, and the production is difficult. The economy of the proposed solution suffers from this, which is why they are used, at least in low-cost variants of Engine series must be excluded.

Aufgabe der Erfindung ist es daher, eine Einrichtung zur Verengung des Querschnitts eines Leitungssystems zu schaffen, welche zuverlässig im Betrieb und kostengünstig in der Herstellung ist und ein günstiges akustisches Verhalten aufweist.The object of the invention is therefore a device for narrowing the cross section to create a piping system that is reliable in operation and inexpensive is in production and has a favorable acoustic behavior.

Diese Aufgabe wird durch die Merkmale des Patentanspruches 1 und 6 gelöst. Ferner wird ein Verfahren zur Steuerung einer Drosseleinrichtung gemäß Anspruch 7 beansprucht.This object is solved by the features of claims 1 and 6. Further is a method for controlling a throttle device according to claim 7 claimed.

Vorteile der ErfindungAdvantages of the invention

Das erfindungsgemäße Leitungssystem weist eine Drosselklappe auf, die schwenkbar in einem Querschnitt des Leitungssystems angeordnet ist. Das Leitungssystem führt ein zu drosselndes Fluid. Erfindungsgemäß ist jedoch die Drosselklappe so dimensioniert, daß sie in der Schließstellung einen Restquerschnitt frei läßt. Mit Schließstellung ist diejenige Stellung der Drosselklappe gemeint, in der durch diese die maximale Fläche des zu drosselnden Querschnitts abgedeckt wird. Ist die Drosselklappe eben ausgeführt, so wird die Schließstellung erreicht, wenn die Drosselklappenfläche sich senkrecht zur Fluidströmung befindet.The line system according to the invention has a throttle valve which can be pivoted is arranged in a cross section of the line system. The pipe system leads to a throttling fluid. According to the invention, however, the throttle valve is dimensioned that it leaves a residual cross-section free in the closed position. With Closed position means the position of the throttle valve in which it is the maximum area of the cross section to be throttled is covered. Is the throttle just executed, the closed position is reached when the throttle valve surface is perpendicular to the fluid flow.

In dieser Schließstellung steht im Vergleich zu herkömmlichen Drosselklappen jedoch noch der Restquerschnitt zur Durchleitung des Fluids zur Verfügung. Wird die Drosselklappe im Einzugbereich des Ansaugtraktes einer Brennkraftmaschine verwendet, so ist ein vollständiger Verschluß des Ansaugquerschnitts nicht gewünscht. Daher kann die Drosselklappe so dimensioniert werden, daß sie in der Schließstellung den Querschnitt nicht vollständig abzudecken vermag. Die senkrechte Ausrichtung der Klappe ist akustisch gesehen von großem Vorteil. Auf diese Weise werden Schallwellen, die von der Brennkraftmaschine durch den Ansaugtrakt zur Mündung des Ansaugrohres gelangen, von der Drosselklappe reflektiert. Dies führt zu einer Verminderung des Ansauggeräusches, da die Schallwellen das System nicht durch die Ansaugöffnung verlassen können. Die reflektierten Schallwellen werden den ankommenden überlagert, was zu einer Teil- oder vollständigen Löschung führen kann.In this closed position, however, is compared to conventional throttle valves the remaining cross-section is still available for the passage of the fluid. Will the Throttle valve used in the intake area of an internal combustion engine, so a complete closure of the intake cross section is not desired. Therefore, the throttle valve can be dimensioned so that it is in the closed position cannot completely cover the cross-section. The vertical orientation the flap is acoustically very advantageous. That way Sound waves from the internal combustion engine through the intake tract to the mouth of the intake pipe, reflected by the throttle valve. This leads to a Reduction of intake noise because the sound waves do not pass through the system can leave the suction opening. The reflected sound waves are the incoming overlaid, which can lead to partial or complete deletion.

Auf diese Weise kann das Ansauggeräusch der Brennkraftmaschine vor allen Dingen im unteren und mittleren Drehzahlenbereich verringert werden. Gleichzeitig werden Pfeifgeräusche verhindert, wie sie bei herkömmlichen Drosselklappen auftreten, wenn diese bis auf einen Spalt geschlossen werden. Zur Verhinderung des Pfeifgeräusches wird der Restquerschnitt vorteilhafterweise ringförmig um die Drosselklappe angeordnet. Die Drosselklappe muß dabei nicht rund ausgeführt sein. Es ist genauso eine ovale oder eckige Ausführung denkbar, wobei der Querschnitt des Leitungssystems zur Klappenform passen muß.In this way, the intake noise of the internal combustion engine can above all be reduced in the lower and middle speed range. Be at the same time Whistling noises, as they occur with conventional throttle valves, if they are closed except for a gap. To prevent the whistling noise the remaining cross section is advantageously annular around the throttle valve arranged. The throttle valve does not have to be round. It’s the same an oval or angular design is conceivable, the cross section of the line system must fit the shape of the flap.

Die Drosselklappe kann durch verschiedene Aktuatoren angetrieben werden. Es bieten sich z. B. elektrische Schrittmotoren oder stufenlos verstellbare U-Dosen an. Auch eine stufige Verstellung der Drosselklappe ist denkbar. Selbst eine Ausführungsform mit lediglich zwei Stufen, also geschlossener und geöffneter Drosselklappe, die kostengünstig durch eine Unterdruckdose angesteuert werden kann, bringt die beschriebenen akustischen Vorteile. Allerdings läßt sich dann die Akustik des Saugrohres nicht mehr stufenlos an das Betriebsverhalten der Brennkraftmaschine anpassen. Es sind vielmehr Betriebsbereiche zu definieren, in denen die verschiedenen Schaltstellungen der Drosselklappe verwendet werden. The throttle valve can be driven by various actuators. It offer z. B. electric stepper motors or continuously adjustable U-boxes. A stepped adjustment of the throttle valve is also conceivable. Even an embodiment with only two stages, i.e. closed and open throttle valve, which can be controlled inexpensively by a vacuum box the acoustic advantages described. However, the acoustics of the Intake pipe no longer continuously to the operating behavior of the internal combustion engine to adjust. Rather, operational areas are to be defined in which the different Switch positions of the throttle valve are used.

Gemäß einer besonders günstigen Ausführungsform der Erfindung wird die Drosselklappe im engsten Querschnitt eines Rohrabschnittes mit venturiförmigen Querschnittsverlauf angeordnet. Der venturiförmige Verlauf des Rohres wirkt sich ebenfalls günstig auf die Akustik des Saugrohres aus.According to a particularly favorable embodiment of the invention, the throttle valve in the narrowest cross-section of a pipe section with a venturi-shaped cross-sectional profile arranged. The venturi-shaped course of the pipe also has an effect favorably on the acoustics of the intake manifold.

Die Drosselklappe muß nicht rund sein. Sie kann vielmehr verschiedene Formen aufweisen, z. B. rechteckig sein. Der Querschnitt des zugehörigen Leitungsabschnitts muß entsprechend an die Klappenform angepaßt sein. Dementsprechend muß der die Drosselklappe umgebende und von der Wandungen des Leitungssystem begrenzte Restquerschnitt auch nicht kreisringförmig sein. Der ringförmige Restquerschnitt paßt sich vielmehr den Konturen an. Wichtig bei der Gestaltung des Restquerschnittes ist lediglich, daß unabhängig von der Klappenstellung keine Bereiche entstehen, in denen der Abstand zwischen Klappenrand und Wandung des Leitungssystems so gering wird, daß Pfeifgeräusche entstehen können.The throttle valve does not have to be round. Rather, it can take various forms have, e.g. B. be rectangular. The cross section of the associated line section must be adapted to the shape of the flap. Accordingly, the the throttle valve surrounding and delimited by the walls of the line system The remaining cross section should not be circular. The annular residual cross section rather adapts to the contours. Important when designing the remaining cross-section is just that no areas regardless of the flap position arise in which the distance between the edge of the flap and the wall of the pipe system becomes so low that whistling noises can occur.

Die beschriebenen akustischen Effekte lassen sich besonders effizient nutzen, wenn der Restquerschnitt einen Flächenanteil von 10% bis 40% der Gesamtfläche des Querschnittes, in dem sich die Drosselklappe befindet, ausmacht. Damit steht einerseits ein genügend großer Querschnitt für die Betriebszustände des Motors mit maximalen Luftbedarf zur Verfügung, andererseits läßt sich der Querschnitt wirksam durch die Drosselklappe verringern.The acoustic effects described can be used particularly efficiently if the remaining cross section an area share of 10% to 40% of the total area of the Cross section in which the throttle valve is located. This means on the one hand a sufficiently large cross section for the operating states of the engine with maximum Air requirement available, on the other hand, the cross section can be effective by reducing the throttle valve.

Eine Drosselklappe weist die erfindungsgemäßen Vorteile auf, die bei einem Einbau in das bereits beschriebene Leitungssystem zu optimalen Ergebnissen hinsichtlich der Akustik des Leitungssystems führen. Dies bedeutet, daß Strömungsgeräusche des zu leitenden Fluids verringert und Schallwellen im Inneren des Leitungssystems gedämpft werden.A throttle valve has the advantages according to the invention, which are obtained during installation in the already described piping system for optimal results regarding the acoustics of the pipe system. This means that flow noise of the fluid to be conducted is reduced and sound waves inside the piping system be dampened.

Um bei Anwendung der Drosselklappe im Ansaugtrakt einer Brennkraftmaschine eine günstige Ansaugakustik über den gesamten Drehzahlbereich der Brennkraftmaschine zu erzielen, wird ein Verfahren gemäß Anspruch 7 angewandt, bei dem die Klappenstellung in Abhängigkeit von der Bedarfsmenge der Brennkraftmaschine an Verbrennungsluft verstellt wird. Hierbei können unterschiedliche Parameter als Meßgrößen verwandt werden. Eine einfache und kostengünstige Lösung ergibt sich, wenn als Stellgröße für den Klappenwinkel α die Drehzahl n der Brennkraftmaschine genutzt wird. Diese steht in den meisten Betriebszuständen des Motors in einem proportionalen Verhältnis zu dessen Luftbedarf. Bei geringen Drehzahlen kann dann die Drosselklappe mehr und mehr geschlossen werden, bis sie ihre Schließstellung erreicht. Im oberen Drehzahlenbereich wird die Drosselklappe vollständig geöffnet, so daß nur noch die Projektion der Klapppenkante den Querschnitt des Ansaugtraktes verengt.To use a throttle valve in the intake tract of an internal combustion engine Favorable intake acoustics over the entire speed range of the internal combustion engine to achieve, a method is applied according to claim 7, in which the Flap position depending on the amount of the internal combustion engine Combustion air is adjusted. Different parameters can be used as measured variables be used. A simple and inexpensive solution results if as the manipulated variable for the flap angle α, the speed n of the internal combustion engine is being used. In most engine operating states, this is all in one proportional ratio to its air requirement. At low speeds, then the throttle valve will be closed more and more until it is in its closed position reached. In the upper speed range, the throttle valve is opened completely, so that only the projection of the folding edge the cross section of the intake tract narrowed.

Das Verfahren zur Steuerung der Drosselklappe muß in jedem Falle gewährleisten, daß der Verbrennungsmotor in jedem Betriebszustand mit der minimalen benötigten Luftmenge versorgt wird. Es kann aber sinnvoll sein, in bestimmten Betriebszuständen die Luft nicht auf das notwendige Minimum zu beschränken, sondern einen größeren Ansaugquerschnitt zur Verfügung zu stellen. Das hat die Folge, daß das Ansauggeräusch größer als der erreichbare Minimalwert ist. Dies ist z. B. in der Beschleunigungsphase des Motors sinnvoll, um dem Fahrer eine akustische Rückkoppelung zur Brennkraftmaschine zu ermöglichen. Hierdurch kann dieser die Schaltzeitpunkte für die Gänge besser erkennen. Soll der Motor jedoch über längere Zeit bei konstanter Drehzahl betrieben werden, so ist ein möglichst geringes Ansauggeräusch gewünscht.The procedure for controlling the throttle valve must always ensure that the internal combustion engine in any operating state with the minimum required Air volume is supplied. However, it can be useful in certain operating states not to limit the air to the necessary minimum, but a larger one To provide intake cross-section. This has the consequence that the intake noise is greater than the minimum value that can be achieved. This is e.g. B. in the acceleration phase of the engine makes sense to give the driver an acoustic feedback to enable the internal combustion engine. This allows the switching times for the corridors to recognize better. However, if the engine is to last for a long time are operated at a constant speed, the lowest possible intake noise wanted.

Eine entsprechende Ansteuerung der Drosselklappe kann erreicht werden, wenn zusätzlich die Beschleunigung des Motors als Signal erfaßt wird. In Verbindung damit, kann eine Erfassung des im Saugrohr vorliegenden Unterdruckes eine zusätzliche Regelgröße darstellen, mit der eine Mangelversorgung der Brennkraftmaschine mit Verbrennungsluft in jedem Fall verhindert werden kann.Appropriate control of the throttle valve can be achieved if additionally the acceleration of the engine is detected as a signal. In connection with, can an additional detection of the negative pressure present in the intake manifold Represent controlled variable with which the internal combustion engine is deficient Combustion air can be prevented in any case.

Diese und weitere Merkmale von bevorzugten Weiterbildungen der Erfindung gehen außer aus den Ansprüchen auch aus der Beschreibung und den Zeichnungen hervor, wobei die einzelnen Merkmale jeweils für sich allein oder zu mehreren in Form von Unterkombinationen bei der Ausführungsform der Erfindung und auf anderen Gebieten verwirklicht sein und vorteilhafte sowie für sich schutzfähige Ausführungen darstellen können, für die hier Schutz beansprucht wird. These and other features of preferred developments of the invention go not only from the claims but also from the description and the drawings, the individual features each individually or in groups in the form of sub-combinations in the embodiment of the invention and on others Areas to be realized and advantageous as well as protective designs can represent, for which protection is claimed here.

Zeichnungdrawing

Weitere Einzelheiten der Erfindung werden in den Zeichnungen anhand von schematischen Ausführungsbeispielen beschrieben. Hierbei zeigen

Figur 1
das Blockschaltbild eines Ansaugtraktes mit Drosselklappe und deren Ansteuerung,
Figur 2
den teilweisen Querschnitt durch ein montagegespriztes Drosselklappenelement mit teilweise geschnitten dargestellten Befestigungflanschen und
Figur 3
den Schaltruckpegel des Ansauggeräusches in Abhängigkeit von der Drehzahl des Verbrennungsmotors bei unterschiedlichen Drosselklappenstellungen.
Further details of the invention are described in the drawings using schematic exemplary embodiments. Show here
Figure 1
the block diagram of an intake tract with throttle valve and its control,
Figure 2
the partial cross section through an assembly-injected throttle valve element with mounting flanges partially shown and
Figure 3
the switching jerk level of the intake noise as a function of the speed of the internal combustion engine at different throttle valve positions.

Beschreibung der AusführungsbeispieleDescription of the embodiments

In Figur 1 ist der Ansaugtrakt einer Brennkraftmaschine 10 schematisch dargestellt. Dieser besteht aus einem venturirohrförmigen Ansaugstutzen 11, einem Luftfilter 12, einem Saugrohr 13, das zu einzelnen Zylindern 14 führt, wobei ein Auspuff 15 die Ausleitung der verbrannten Gase gewährleistet.In Figure 1, the intake tract of an internal combustion engine 10 is shown schematically. This consists of a venturi-shaped intake 11, an air filter 12, an intake manifold 13 leading to individual cylinders 14, an exhaust 15 the Guaranteed discharge of the burned gases.

Eine Drosselklappe 16 ist im engsten Querschnitt 17 des Venturierohrs untergebracht. Die Drosselklappe 16 gemäß Figur 1 ist im vollständig geöffneten Zustand dargestellt. Die Drosselklappe wird ausgehend von einem Einlaß 18 des Ansaugstutzens angeströmt, was durch einen Pfeil angedeutet ist.A throttle valve 16 is accommodated in the narrowest cross section 17 of the venturi tube. The throttle valve 16 according to FIG. 1 is in the fully open state shown. The throttle valve is started from an inlet 18 of the intake manifold flowed to what is indicated by an arrow.

Die Stellung α der Drosselklappe wird über einen Schrittmotor 19 eingestellt. Die Einstellung erfolgt über eine Kontrolleinheit 20, die verschiedene Stellgrößen des Ansaugtraktes zur Ermittlung der Drosselklappenstellung auswertet. Zum einen kann der anliegende Unterdruck p im Saugrohr gemessen werden. Außerdem wird die Drehzahl n der Brennkraftmaschine ermittelt, das Drehzahlsignal kann weiterhin unter Zuhilfenahme eines Zeitmessers 21, der das Signal t liefert, zur Ermittlung der Beschleunigung n genutzt werden.The position α of the throttle valve is set via a stepper motor 19. The Setting is carried out via a control unit 20, the various manipulated variables of the Intake tract evaluates to determine the throttle valve position. For one, can the negative pressure p in the intake manifold can be measured. In addition, the Engine speed n determined, the speed signal can still be below With the help of a timer 21, which supplies the signal t, to determine the Acceleration n can be used.

Figur 2 zeigt ein Beispiel für die konstruktive Ausgestaltung der erfindungsgemäßen Drosselklappe 16. Die Drosselklappe ist einteilig mit einer Klappenwelle 22 und Stützrippen 23 hergestellt. Diese Einheit ist in einen Klappenrahmen 24 montagegespritzt, so daß sich ein Drosselklappenmodul 25 ergibt. Dieses kann als Standartbauteil in unterschiedlichen Leitungssystemen montiert werden, wozu am Umfang drei Befestigungsflansche 26 mit Aufnahmelöchern 27 für Schrauben angebracht sind.Figure 2 shows an example of the structural design of the invention Throttle valve 16. The throttle valve is in one piece with a valve shaft 22 and Support ribs 23 made. This unit is injection molded into a flap frame 24, so that there is a throttle valve module 25. This can be used as a standard component can be installed in different pipe systems, including the scope three mounting flanges 26 with holes 27 for screws attached are.

Die Drosselklappe ist in Schließstellung dargestellt. Zwischen einer Klappenkante 28 und einer Innenwand 29 des Klappenrahmens 24 ist ein Restquerschnitt 30 gebildet, der durch das Fluid durchströmbar ist. Die Klappe kann nun stufenlos geöffnet werden, wodurch ein durch die Projektion der Klappenkanten auf den Querschnitt 17 und durch den Innenrand des Restquerschnittes umrandeter Öffnungsquerschnitt sich immer weiter öffnet. Der maximale Öffnungsquerschnitt 31 bei vollständig geöffneter Klappe ist in Figur 2 angedeutet, wobei der Rand des Öffnungsquerschnitts in diesem Fall durch die Klappenwelle 22 gebildet wird. Der von dem Fluid effektiv durchströmbare Querschnitt wird jeweils aus der Summe des Restquerschnitts und des Öffnungsquerschnitts gebildet.The throttle valve is shown in the closed position. Between a flap edge 28 and an inner wall 29 of the flap frame 24 has a residual cross section 30, which can be flowed through by the fluid. The flap can now be opened continuously whereby a by projecting the flap edges on the cross section 17 and opening cross-section bordered by the inner edge of the remaining cross-section always opens further. The maximum opening cross section 31 when fully open Flap is indicated in Figure 2, with the edge of the opening cross section in this Case is formed by the valve shaft 22. The fluid through which the fluid can flow effectively Cross section is calculated from the sum of the remaining cross section and the Opening cross section formed.

Die Wirkung der Drosselklappenverstellung ist in Figur 3 dargestellt. In diesem Beispiel wird die Drosselklappenstellung in Abhängigkeit von der Drehzahl n verstellt. Die vollständig geschlossene Drosselklappe deckt 81% der Querschnittsfläche ab. Die gestrichelten Kurven zeigen das Ansauggeräusch bei verschiedenen Drosselklappenstellungen an. Es wird deutlich, daß durch ein schrittweises Verschließen der Drosselklappe bis auf den Restquerschnitt das Ansauggeräusch um bis zu 18 dB gesenkt werden kann.The effect of the throttle valve adjustment is shown in FIG. 3. In this example the throttle valve position is adjusted depending on the speed n. The fully closed throttle valve covers 81% of the cross-sectional area. The dashed curves show the intake noise at various throttle valve positions on. It becomes clear that by gradually closing the Throttle valve up to the remaining cross section the intake noise by up to 18 dB can be lowered.

Bei geschlossener Drosselklappe wird der Motor im höheren Drehzahlenbereich jedoch nicht genügend mit Verbrennungsluft versorgt. Daher muß in Abhängigkeit von der Drehzahl die Drosselklappe immer weiter geöffnet werden. Hierdurch ergibt sich die resultierende Kurve des Ansauggeräusches a, wobei gemäß dieser Kurve die Drosselklappe derart gestellt wird, daß die Brennkraftmaschine immer mit der minimal nötigen Luftmenge versorgt wird.When the throttle valve is closed, however, the engine is in the higher speed range not adequately supplied with combustion air. Therefore, depending on the speed the throttle valve can be opened more and more. This results in the resulting curve of the intake noise a, wherein according to this curve the Throttle valve is placed such that the internal combustion engine always with the minimum necessary air volume is supplied.

Zur Erhöhung des Ansauggeräusches in der Beschleunigungsphase kann die Drosselklappe jedoch auch schneller als notwendig geöffnet werden. Hierdurch steigt in diesen Bereichen das Ansauggeräusch der Brennkraftmaschine und ermöglicht auf diese Weise eine akustische Rückkoppelung für den Fahrer. Diese Betriebsart ist durch die Kurve b dargestellt.The throttle valve can be used to increase the intake noise during the acceleration phase but can also be opened faster than necessary. This increases in these areas the intake noise of the internal combustion engine and enables this way an acoustic feedback for the driver. This mode is represented by curve b.

Zur Erzeugung der Kurve b wird die Drosselklappe diskontinuierlich im Verhältnis zur Drehzahl verstellt. Hierdurch läßt sich das Ansauggeräusch beliebig beeinflussen, wodurch auch Kundenwünsche nach einem Sounddesign erfüllt werden können.To generate curve b, the throttle valve is discontinuous in relation to Speed adjusted. In this way, the intake noise can be influenced as desired, whereby customer requests for a sound design can also be met.

Claims (9)

Leitungssystem (11, 12, 13) mit Drosselklappe (16), insbesondere Ansaugtrakt einer Brennkraftmaschine, wobei die Drosselklappe schwenkbar in einem Querschnitt (17) angeordnet ist, der Teil des Leitungssystems für das zu drosselnde Fluid ist, dadurch gekennzeichnet, daß die Drosselklappe (16) in der Schließstellung einen Restquerschnitt (30) freiläßt, der durch das zu drosselnde Fluid durchströmbar ist.Pipe system (11, 12, 13) with throttle valve (16), in particular intake tract of an internal combustion engine, the throttle valve being pivotably arranged in a cross section (17) which is part of the line system for the fluid to be throttled, characterized in that the throttle valve ( 16) in the closed position leaves a residual cross-section (30) through which the fluid to be throttled can flow. Leitungssystem nach Anspruch 1, dadurch gekennzeichnet, daß die Drosselklappe (16) im engsten Querschnitt eines Rohrabschnittes mit einem venturiförmigen Querschnittsverlauf, insbesondere einem Ansaugstutzen (11) angeordnet ist.Pipe system according to claim 1, characterized in that the throttle valve (16) is arranged in the narrowest cross-section of a pipe section with a venturi-shaped cross-sectional profile, in particular an intake port (11). Leitungssystem nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, daß die Drosselklappe (16) im Bereich des Einlasses (18) des Ansaugtraktes einer Brennkraftmaschine angeordnet ist.Pipe system according to one of the preceding claims, characterized in that the throttle valve (16) is arranged in the region of the inlet (18) of the intake tract of an internal combustion engine. Leitungssystem nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, daß der Restquerschnitt (30) die Drosselklappe (16) ringförmig umgibt.Pipe system according to one of the preceding claims, characterized in that the residual cross section (30) surrounds the throttle valve (16) in a ring. Leitungssystem nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, daß der Restquerschnitt (30) einen Flächeninhalt aufweist, der zwischen 10 und 40 % der Gesamtfläche des Querschnittes (17) ausmacht.Pipe system according to one of the preceding claims, characterized in that the remaining cross-section (30) has a surface area which makes up between 10 and 40% of the total area of the cross-section (17). Drosselklappe (16) zum Einbau in einen Querschnitt (17) dadurch gekennzeichnet, daß die Drosselklappe (16) in der Schließstellung einen Restquerschnitt (30), der Teil des Querschnittes (17) ist, freiläßt.Throttle valve (16) for installation in a cross-section (17), characterized in that the throttle valve (16) leaves a residual cross-section (30), which is part of the cross-section (17), in the closed position. Verfahren zur Steuerung einer Drosselklappe (16) gemäß einem der vorherigen Ansprüche im Ansaugtrakt einer Brennkraftmaschine, dadurch gekennzeichnet, daß die Klappenstellung in Abhängigkeit von der Bedarfsmenge der Brennkraftmaschine an Verbrennungsluft verstellt wird. Method for controlling a throttle valve (16) according to one of the preceding claims in the intake tract of an internal combustion engine, characterized in that the flap position is adjusted as a function of the amount of combustion air required by the internal combustion engine. Verfahren nach Anspruch 7, dadurch gekennzeichnet, daß als Regelgröße für die Klappenstellung die Drehzahl der Brennkraftmaschine herangezogen wird.Method according to claim 7, characterized in that the speed of the internal combustion engine is used as the control variable for the flap position. Verfahren nach einem der Ansprüche 7 bis 8, dadurch gekennzeichnet, daß bei Betriebszuständen der Brennkraftmaschine, in denen der Fahrer eine akustische Rückkopplung zum Motor benötigt, der durch die Drosselklappe freigegebene Öffnungsquerschnitt (31) größer gewählt wird, als dies für eine hinreichende Versorgung der Brennkraftmaschine mit Verbrennungsluft notwendig wäre.Method according to one of claims 7 to 8, characterized in that in the operating states of the internal combustion engine, in which the driver requires acoustic feedback to the engine, the opening cross-section (31) released by the throttle valve is selected to be larger than that for an adequate supply of the internal combustion engine with combustion air would be necessary.
EP00111985A 1999-06-21 2000-06-19 Piping system having a throttle valve Expired - Lifetime EP1063406B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19928354 1999-06-21
DE19928354A DE19928354A1 (en) 1999-06-21 1999-06-21 Pipe system with throttle valve

Publications (2)

Publication Number Publication Date
EP1063406A1 true EP1063406A1 (en) 2000-12-27
EP1063406B1 EP1063406B1 (en) 2004-09-15

Family

ID=7912005

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00111985A Expired - Lifetime EP1063406B1 (en) 1999-06-21 2000-06-19 Piping system having a throttle valve

Country Status (5)

Country Link
US (1) US6427661B1 (en)
EP (1) EP1063406B1 (en)
AT (1) ATE276437T1 (en)
DE (2) DE19928354A1 (en)
ES (1) ES2226656T3 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113864089A (en) * 2020-06-30 2021-12-31 广州汽车集团股份有限公司 An engine intake manifold, an intake system and a control method thereof

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19918777A1 (en) * 1999-04-24 2000-10-26 Mann & Hummel Filter Flap valve arrangement as throttles in intake channels in IC engines has power transmission shaft connecting flap valve wings, and injection-molded valve modules
DE202006005140U1 (en) * 2006-03-29 2007-08-09 Mann + Hummel Gmbh Sound damping device for intake system of internal combustion engine, has damping flap, where pivoting actuation of flap is caused by dynamic pressure of intake air flow and aerodynamic pressure distribution in flap
US7464674B2 (en) * 2006-06-16 2008-12-16 Ford Global Technologies, Llc Induction air acoustics management for internal combustion engine
DE202006011933U1 (en) * 2006-08-02 2007-12-06 Mann + Hummel Gmbh Muffler means
US9341150B2 (en) * 2012-11-06 2016-05-17 GM Global Technology Operations LLC Throttle control systems and methods for reducing induction noise
JP7065000B2 (en) * 2018-09-18 2022-05-11 日立Astemo株式会社 Intake device
US11408380B2 (en) 2020-12-24 2022-08-09 Dayco Ip Holdings, Llc Devices for producing vacuum using the Venturi effect having a hollow fletch
US11614098B2 (en) 2020-12-24 2023-03-28 Dayco Ip Holdings, Llc Devices for producing vacuum using the Venturi effect having a solid fletch

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2192226A (en) * 1986-06-21 1988-01-06 Hella Kg Hueck & Co I.c. engine throttle valve body
JPH04301174A (en) * 1991-03-28 1992-10-23 Mazda Motor Corp Intake device for engine
JPH08109836A (en) * 1994-08-17 1996-04-30 Toyota Motor Corp Internal combustion engine
DE19714717A1 (en) * 1996-10-01 1998-04-09 Mitsubishi Electric Corp Motor vehicle internal combustion engine intake control valve
EP0863303A2 (en) * 1997-03-04 1998-09-09 Nippon Soken, Inc. Apparatus for preventing flow noise in throttle valve
EP0889228A1 (en) 1997-07-03 1999-01-07 Nissan Motor Co., Ltd. Intake noise reducing device for internal combustion engine
JPH11141416A (en) * 1997-11-05 1999-05-25 Toyota Motor Corp Abnormal noise reduction structure
WO2000034642A1 (en) * 1998-12-08 2000-06-15 Filterwerk Mann+Hummel Gmbh Air duct, especially fitted in the air intake system of an internal combustion engine

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56132457A (en) * 1980-03-19 1981-10-16 Hitachi Ltd Fuel injector
JPS58122334A (en) * 1982-01-18 1983-07-21 Toyota Motor Corp Intake air throttle device for diesel engine
DE3244103A1 (en) * 1982-11-29 1984-05-30 Vdo Adolf Schindling Ag, 6000 Frankfurt THROTTLE VALVE CONNECTOR
DE3608804A1 (en) * 1986-03-15 1987-09-17 Carduck F W Gmbh Conduit sound damper with movable sound-absorbing walls
JPH0663460B2 (en) * 1986-06-02 1994-08-22 株式会社日立製作所 Throttle valve assembly for electric motor driven throttle valve
US4759326A (en) * 1986-07-10 1988-07-26 Eaton Corporation Method of controlling engine idle speed and air throttle therefor
EP0500124B1 (en) * 1991-02-21 1997-08-20 Yamaha Hatsudoki Kabushiki Kaisha Induction system for an internal combustion engine
EP0714478B1 (en) * 1994-06-18 2000-04-26 AB Elektronik GmbH Throttle valve device
DE19812089C1 (en) * 1998-03-19 1999-06-10 Daimler Chrysler Ag Intake for multiple cylinder internal combustion engine
JPH11350981A (en) * 1998-06-11 1999-12-21 Aisan Ind Co Ltd Throttle valve control device
FR2783283B1 (en) * 1998-09-14 2000-11-24 Mark Iv Systemes Moteurs Sa INTEGRATED INTAKE MANIFOLD / BUTTERFLY HOUSING
US6189506B1 (en) * 1999-08-06 2001-02-20 Siemens Canada Limited Throttle shaft rotation limiting device

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2192226A (en) * 1986-06-21 1988-01-06 Hella Kg Hueck & Co I.c. engine throttle valve body
JPH04301174A (en) * 1991-03-28 1992-10-23 Mazda Motor Corp Intake device for engine
JPH08109836A (en) * 1994-08-17 1996-04-30 Toyota Motor Corp Internal combustion engine
DE19714717A1 (en) * 1996-10-01 1998-04-09 Mitsubishi Electric Corp Motor vehicle internal combustion engine intake control valve
EP0863303A2 (en) * 1997-03-04 1998-09-09 Nippon Soken, Inc. Apparatus for preventing flow noise in throttle valve
EP0889228A1 (en) 1997-07-03 1999-01-07 Nissan Motor Co., Ltd. Intake noise reducing device for internal combustion engine
JPH11141416A (en) * 1997-11-05 1999-05-25 Toyota Motor Corp Abnormal noise reduction structure
WO2000034642A1 (en) * 1998-12-08 2000-06-15 Filterwerk Mann+Hummel Gmbh Air duct, especially fitted in the air intake system of an internal combustion engine

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 1996, no. 08 30 August 1996 (1996-08-30) *
PATENT ABSTRACTS OF JAPAN vol. 1999, no. 10 31 August 1999 (1999-08-31) *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113864089A (en) * 2020-06-30 2021-12-31 广州汽车集团股份有限公司 An engine intake manifold, an intake system and a control method thereof
CN113864089B (en) * 2020-06-30 2022-09-30 广州汽车集团股份有限公司 Engine air inlet manifold, air inlet system and control method of air inlet system

Also Published As

Publication number Publication date
ES2226656T3 (en) 2005-04-01
ATE276437T1 (en) 2004-10-15
EP1063406B1 (en) 2004-09-15
DE19928354A1 (en) 2000-12-28
DE50007737D1 (en) 2004-10-21
US6427661B1 (en) 2002-08-06

Similar Documents

Publication Publication Date Title
DE3521747C2 (en) Intake system for an internal combustion engine
DE3811162A1 (en) WASTEWATER ARRANGEMENT WORKING WITH VACUUM
DE102014114968B4 (en) Control device for an internal combustion engine
EP1063406B1 (en) Piping system having a throttle valve
DE4027503C2 (en) Boost pressure control device for an engine with a primary turbocharger and a secondary turbocharger
WO2000029734A1 (en) Piston-type internal combustion engine with throttle-free load control and comprising a device for generating a negative pressure, and method for using said device
EP0902862A1 (en) Airflow device
DE3435028C2 (en)
EP0242797B1 (en) Intake silencer, in particular for internal-combustion engines
DE4103361A1 (en) FUEL CONTROL DEVICE OF AN ENGINE
DE3435701A1 (en) DEVICE FOR REGULATING THE IDLE SPEED
DE102007026416B4 (en) Device for influencing the intake noise of an internal combustion engine
DE3624248C2 (en)
EP0954686B1 (en) Intake pipe for regulating air consumption in the intake tract of an internal combustion engine
DE20120470U1 (en) Muffler means
DE3227722A1 (en) EXHAUST GAS RECIRCULATION SYSTEM IN AN INTERNAL COMBUSTION ENGINE, ESPECIALLY IN A MOTOR VEHICLE
DE2451148C3 (en) Exhaust gas recirculation device in internal combustion engines
DE102017210793A1 (en) Cooling unit, control unit and method for controlling a condensate amount in a refrigeration unit
DE10065365B4 (en) intake system
DE19813747A1 (en) Inlet arrangement for internal combustion engine
DE102008050139A1 (en) Method for controlling valve device of air collection box in motor vehicle, involves passing partial air circulation mode into air circulation mode as soon as speed of motor vehicle exceeds predetermined speed value
DE2931078A1 (en) ELECTRICALLY CONTROLLED CARBURETTOR
EP1429081B9 (en) Ventilation system for room ventilation
DE102006025889A1 (en) Intake channel for use in suction device, has locking unit releasing air ducts in one position and locking air ducts in another position, where locking unit is assigned to downstream-sided end area of one air duct
DE102005054991A1 (en) Exhaust system for internal combustion engine of motor vehicle, has outlet exhaust pipe with exhaust flap that is connected with control device for adjusting flap in opened condition when engine speed is low

Legal Events

Date Code Title Description
EUG Se: european patent has lapsed
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

17P Request for examination filed

Effective date: 20010118

AKX Designation fees paid

Free format text: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

17Q First examination report despatched

Effective date: 20030213

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: MANN + HUMMEL GMBH

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRE;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.SCRIBED TIME-LIMIT

Effective date: 20040915

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20040915

Ref country code: IE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20040915

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20040915

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 20040915

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: GERMAN

REF Corresponds to:

Ref document number: 50007737

Country of ref document: DE

Date of ref document: 20041021

Kind code of ref document: P

REG Reference to a national code

Ref country code: SE

Ref legal event code: TRGR

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20041215

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20041215

NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2226656

Country of ref document: ES

Kind code of ref document: T3

REG Reference to a national code

Ref country code: IE

Ref legal event code: FD4D

ET Fr: translation filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050619

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050619

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20050619

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050630

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050630

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050630

Ref country code: MC

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050630

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20050616

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 20060614

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20060615

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20060629

Year of fee payment: 7

BERE Be: lapsed

Owner name: *MANN + HUMMEL G.M.B.H.

Effective date: 20050630

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050215

EUG Se: european patent has lapsed
GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20070619

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20070619

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20070620

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20070620

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20070620

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20130703

Year of fee payment: 14

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20150227

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20140630

REG Reference to a national code

Ref country code: DE

Ref legal event code: R081

Ref document number: 50007737

Country of ref document: DE

Owner name: MANN+HUMMEL GMBH, DE

Free format text: FORMER OWNER: MANN + HUMMEL GMBH, 71638 LUDWIGSBURG, DE

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20190619

Year of fee payment: 20

REG Reference to a national code

Ref country code: DE

Ref legal event code: R071

Ref document number: 50007737

Country of ref document: DE