EP1283340B1 - Boitier de dispositif d'étranglement avec éléments de compensation pour moteurs à combustion interne - Google Patents

Boitier de dispositif d'étranglement avec éléments de compensation pour moteurs à combustion interne Download PDF

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Publication number
EP1283340B1
EP1283340B1 EP02015314A EP02015314A EP1283340B1 EP 1283340 B1 EP1283340 B1 EP 1283340B1 EP 02015314 A EP02015314 A EP 02015314A EP 02015314 A EP02015314 A EP 02015314A EP 1283340 B1 EP1283340 B1 EP 1283340B1
Authority
EP
European Patent Office
Prior art keywords
sealing
housing
throttle
throttle apparatus
compensation element
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.)
Expired - Lifetime
Application number
EP02015314A
Other languages
German (de)
English (en)
Other versions
EP1283340A3 (fr
EP1283340A2 (fr
Inventor
Markus Michels
Stefan Josten
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch 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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP1283340A2 publication Critical patent/EP1283340A2/fr
Publication of EP1283340A3 publication Critical patent/EP1283340A3/fr
Application granted granted Critical
Publication of EP1283340B1 publication Critical patent/EP1283340B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • F02D9/106—Sealing of the valve shaft in the housing, e.g. details of the bearings
    • 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
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2201/00—Metals
    • F05C2201/02—Light metals
    • F05C2201/021—Aluminium

Definitions

  • a throttle device which is usually designed as a circular flap, is included in the intake manifold of the internal combustion engine and dosed to suck the required for the combustion volume flow of fresh air. Due to the high flow rates of the residual air flow in the intake tract and at low ambient temperatures, the H 2 O contained in the fresh air can condense on the wall of the tube; Upon further cooling ice may form inside the fresh air line, which can significantly affect the ease with which a throttle valve. Furthermore, care must be taken in the case of split throttle plate housings that no external air can enter the intake tract behind the throttle valve on the side facing the internal combustion engine in the region of the parting lines of the housing halves.
  • DE 33 46 167 A1 relates to a throttle body.
  • a throttle valve is arranged on a shaft which in turn can be fixed on both sides in the nozzle housing by plain bearings. These plain bearings are each pressed into a shaft bore and have throttle side End faces, which are curved according to the wall of the housing bore and form part of this wall. This design of the sliding bearing is the leakage rate This throttle body according to DE 33 46 167 A1 extremely low.
  • An electromotive actuator in particular with a throttle valve.
  • An electromotive actuator is disclosed with a housing and an electric motor disposed on a drive side within the housing for driving a movable element arranged in the housing.
  • this movable element is in particular a throttle valve, wherein provided is that on the housing a separate electronics housing for receiving a control and / or Evaluation electronics can be fastened. This can be especially the one hand Avoid electromagnetic interference and on the other hand can be standard manufactured and no control unit requiring electronic actuators used be without any changes to the mold to make the actuator required are.
  • a heater for mixture preparation in mixture formers is known. According to this solution, it is a heater for mixture preparation Internal combustion engine mixture formers with a main flow limiting tube wall and with a main throttle member downstream and a fuel metering device in the upstream part of a mixing chamber. This is about a part of this Longitudinal extension as a heat exchanger double wall with an annular Schuworthraum formed, at its one end a water inlet pipe and on has a water outlet at the other end.
  • the heat exchanger is over thermally controlled, opening from higher temperatures Zuschaltventil with a Cooling water circuit connectable. It is located at blocked connection valve as well as at switched off cooling water circuit above the cooling water level.
  • the Andes Main flow path of the Gemischfelners adjacent inner wall of the heat exchanger consists of an electrical resistance material and is dependent on one from the cooling water temperature thermally controlled, from a certain higher water temperature opening electrical switching element electrically connected to a voltage source.
  • a heated throttle device for internal combustion engines known.
  • a fluid flow flows through a flow cross-section of a bore, wherein the fluid flow by means of an actuatable, in a receiving bore in the housing pivotable throttle element is metered.
  • a wall of the hole and the outer circumference of the housing are in this cavities for a heating or cooling medium educated.
  • the insert element can make their seal effective.
  • the insert element diameter differences in the flow cross-section equalize the throttle body halves so that there are no jumps in diameter occur and therefore no dead water areas arise in which in the intake air accumulate contained media over the operating time of the internal combustion engine.
  • the insert element can on the one hand be designed as a prefabricated molded part a conical inner wall; On the other hand, it can also be cured by a hardening Material form, so that the two throttle body halves after assembly are fixed for later use.
  • Both the design of the sealing element as a prefabricated preformed elastomer ring as well as the design of the sealing element Made of a formable after processing hardening material allows the compensation of manufacturing inaccuracies on the successive faces of the upper or lower throttle body halves.
  • sealing element By designed as elastomer insert or as a hardening molding compound sealing element can by a corresponding shaping of the flow cross-section facing Wall of the sealing element, in particular via an integrally formed angled Outlet, in the flow direction better flow guidance of the intake air flow in the suction line can be achieved in the intake tract of an internal combustion engine.
  • Fig. 1 is a perspective top view of a throttle body with integrated Remove flow channels for a temperature control medium.
  • a throttle device 1 whose housing is formed in several parts, includes, among others a lower housing half 2. At the lower housing half 2 is a lower shell. 3 molded, which is closed by an upper shell 4, wherein in the lower shell 3 and the upper shell 4 limited cavity drive elements are added. The drive elements are received by one in a drive housing 5 Actuator driven, actuate a not shown in the illustration of FIG. 1 Throttle. The throttle valve or the throttle shaft is in bearings 6 the other half of the housing inserted.
  • the lower housing half 2 comprises an inner wall 8, which has the flow cross section a fluid flow through the throttle device 1 limited.
  • Rib-shaped configured webs 9 Extend from the inner wall 8 Rib-shaped configured webs 9 in the direction of the inner wall 8 surrounding outer wall 11 of the lower half of the housing 2.
  • cavities 10 are formed, which for the temperature of the Flow cross-section bounding inner wall 8 of a heating medium, such. tempered Water or tempered air, can be flowed through.
  • a throttle valve assembly 37 see Fig ..
  • the outer wall 11 on the lower housing half 2 is raised above the inner wall 8 of the lower housing half 2, so that a support surface 7 for a in Fig. 1 not illustrated sealing and compensation element is formed.
  • the outer wall 11 fixes the Radial position of a sealing and compensating element, which is formed with a thereto sleeve-shaped portion conforms to the inner wall of the lower housing half 2.
  • Fig. 1.1 shows a partially cutaway view of the flow channels for a tempering medium within the lower half of the throttle body.
  • the first end face 15 of the lower housing half 2, in which the bearing shells 6 are formed for a throttle valve arrangement, not shown, is in contact with a corresponding contact surface on a not shown here
  • Corresponding to the first end face 15, is formed on the underside of the lower housing part 2, a second end face 16.
  • Fig. 2 shows the plan view of a throttle device.
  • FIG. 2 shows that the lower housing half 2 of a throttle device 1 drive components receiving here superimposed in the drawing plane shown lower or upper shells 3, 4 comprises.
  • a drive housing 5 which at the lower or upper shells 3, 4 opposite Side is closed via a closure element 23.
  • the closure element 23 can be e.g. by means of snap fasteners 24 on the open end side of the drive housing 5 of the Fix lower housing parts 2.
  • the fluid flow passing through the flow cross-section of the throttle device 1 is determined by means of a throttle valve surface releasing or closing the free flow cross section 21 regulated.
  • a throttle valve shaft 20 is a first wing 21.1 as well a second wing 21.2 of the throttle surface 21 assigned.
  • drive components is the throttle shaft 20 on the throttle device 1 and thus the recorded on the throttle shaft 20 first wing 21.1 and 21.2 twisted.
  • Fig. 2.1 shows a section through the throttle device according to the section B-B in Fig. 2.
  • FIG. 2.1 The representation of FIG. 2.1 is removed that in the throttle device 1 and their lower housing half 2 a throttle valve shaft 20 comprehensive throttle valve assembly 37 is inserted.
  • the throttle shaft 20 may e.g. a drive element 35 be injection molded directly, which in assembled state of the throttle device 1 of the lower shell 3 of the housing lower part 2 and this overlapping upper shell 4 may be connected.
  • the throttle shaft In turn, 20 may be enclosed by bearing elements 33, 34 which are in the in Fig. 1 and Fig. 1.1 shown bearing shells 6 for the throttle shaft 20 and in the can be inserted lower housing half 2 and fixed by mounting the upper half of the housing is.
  • a positive connection section 32 are provided for fixing an air connection hose.
  • the throttle shaft 20 of the throttle assembly 37 is of shaft seals 33, 34 for Improvement of the smooth running in the bearing shells 6 of the lower housing half 2 enclosed.
  • a first sealing and compensating element 30 is in the lower housing half 2 of the Throttle device 1 arranged that a extending in the radial direction bearing surface 43, the cavities 10 in the lower housing half 2 seals.
  • the inner wall 46 of the first sealing and compensating element 30 has no conical inlet region 45, whose widest cross-section 42 on the throttle assembly 37th facing away side and whose narrowest cross-section 41 the diameter of the at Throttle valve shaft 20 received throttle flap 21.1 and 21.2 corresponds. Instead of a shown in Fig.
  • first Sealing and compensation element 30, which is designed as an elastomeric molding, can this also be made of a deformable and hardenable material, the final Shaping during assembly of the other housing half on the lower half of the housing 2 takes place.
  • Sealing and compensation element 30 can be made of aluminum die-cast throttle body components occurring in the area of the contact surfaces manufacturing inaccuracies compensate without rework, because the compensation of manufacturing inaccuracies by the throttle flap assembly 37 assigning radially extending contact surface 43 is effected.
  • a 30 corresponding to the first sealing and compensation element be inserted further sealing and compensation element 31.
  • Also on the further sealing and compensating element 31 is characterized by the contour of the Inner wall 46 of the widest cross-section 42 extending from a conical inlet funnel 45 formed.
  • Fig. 2.2 is a sectional profile A-A through the throttle device of FIG. 2 shows.
  • a drive housing 5 is auge configured in which a taken here in sectional view as solid material shown drive.
  • the drive acts on the enclosed by lower shell 3 and upper shell 4 drive components 35, which the throttle shaft 20 of the throttle assembly 37 within the flow cross-section, which is passed by the fluid flow actuate.
  • the throttle assembly 37 which the throttle shaft 20 and the offset thereon to each other or to each other exactly opposite received first wing 21.1 and the second wing 21.2 may, for example, procure as an insert 37 be which joints 38 with the also in the flow cross section of the Fluid flow fitted first sealing and compensation element 30 and the other Form sealing and compensation element 31.
  • At the intake valve 37 designed as a throttle valve assembly can shoulders 36 formed in the region of the narrowest cross-section be. A training of shoulders 36 procured on the insert 37 as part Throttle valve assembly is not mandatory.
  • the narrowest cross section which on the first and the further sealing and compensating element 30, 31st is formed, the flow cross-section of the fluid channel of the throttle device. 1 different throttle valve diameter can be adjusted.
  • the invention allows Solution the installation of different sized throttle valve assemblies 37th in one and the same housing, wherein in Fig. 2.2 in a sectional view shown Sealing and compensation elements 30 and 31 as reducing the flow cross-section serve.
  • Sealing and compensation elements 30 and 31 as reducing the flow cross-section serve.
  • the Dichtund Compensating elements 30, 31 as shown in Fig. 2.1 of a temperature control perfused cavities 10 in a housing half 2 formed cavities Close 10; next to it serves in the radial direction extending contact surface 43 as a compensation surface to compensate for manufacturing inaccuracies in die-cast aluminum manufactured throttle body components.
  • the components which act as sealing and compensating elements 30 and 31 in FIG. 2.2 can in addition to their design as separate elastomer insert rings also made of hardenable, formable materials whose final shape when mounting the housing halves the throttling device 1 takes place and in the mounted state, the insert assembly 37 of the throttle element fix and the parting line of the housing half against Seal outside air inlet from the outside.
  • Fig. 3 shows the section through a sealing and compensation element.
  • FIG. 3 can be removed that as a separate, made of flexible elastomeric material fabricated insert member 30 and 31 a narrowest cross-section 41 and a widest cross-section 42 has. Due to the cross-sectional difference is an inlet funnel, i.e. a conical frusto-conical inlet region 45 is formed, the narrowest Cross-section 41 is provided with an angled spout 40. In the flow direction seen passing the throttle device 1 fluid flow, this is at passage of the narrowest cross-section 41 by the angled outlet 40 arranged there a homogeneous Impacted airfoil. The reproduced in Fig.
  • Sealing and compensating element 30 or 31 comprises a radially extending in the radial direction Abutment surface 43 and a molded onto this, with a constant diameter formed sleeve-shaped portion 44. With the sleeve-shaped portion 44 lies the sealing and compensating element 30 and 31 on the inner wall 8 of the throttle device 1 on. A side which closes in the radial direction extending contact surface 43 (See illustration according to Fig.
  • Fig. 3.1 is a perspective plan view of the sealing and compensating element according to the sectional views in Fig. 3 can be seen.
  • the inner wall 46th Depending on the diameter difference of the narrowest Cross-section 41 and the widest cross section 42, turns on the inner wall 46th a tapered inlet funnel with respect to the narrowest cross-section 41 of the Dichtund Compensation element 30 and 31 a.
  • the inner wall 46 extends substantially smooth, so that from the narrowest cross-section 41 of the sealing and compensation element 30th or 31 exiting fluid flow through the angled outlet 40 a over the cross section homogeneous flow profile can be impressed, in which turbulence and adjusting dead water areas are avoided.
  • the closest Cross-section 41 may be the proposed one, both as a discrete elastomeric molded part as well as made of hardenable deformable material sealing and compensation element 30 and 31 are also used as a reducer, so that in an example as a standard housing type of a throttle device 1 serving a component Throttle valve assembly 37 can be installed, the throttle body diameter less than the free flow cross section.
  • the first and the further sealing and compensating element 30, 31 trained inlet funnel 45 can be the flow in the region of the narrowest cross section, i. where, as the insert 37th obtained throttle device in the free flow cross-section of the throttle device 1, accelerate.

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  • 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)

Claims (10)

  1. Dispositif d'étranglement pour la commande d'un flux de fluide au niveau d'un moteur à combustion interne, comportant un boítier en plusieurs parties, parmi lesquelles la première partie de boítier (2) et l'autre moitié de boítier comportent des surfaces de contact (15) assemblées l'une avec l'autre, et le flux de fluide est commandé au moyen d'un élément de soupape plat (21) réglable à l'aide d'un actionneur dans le canal d'écoulement du flux de fluide, le dispositif d'étranglement (1) comportant au moins un élément d'étanchéité et de compensation (30, 31) dont la forme (45) de la paroi intérieure (46) limite la section d'écoulement du flux de fluide,
    caractérisé en ce que
    cet élément (30, 31) comprend une surface d'appui (43) permettant d'isoler de façon étanche des espaces creux (10) du côté du boítier.
  2. Dispositif d'étranglement selon la revendication 1,
    caractérisé en ce que
    l'élément d'étanchéité et de compensation (30, 31) est configuré sous la forme d'une pièce moulée en élastomère pouvant être insérée.
  3. Dispositif d'étranglement selon la revendication 1,
    caractérisé en ce que
    l'élément d'étanchéité et de compensation (30, 31) est constitué d'un matériau déformable durcissable, mis en place entre des surfaces de contact (15) du boítier à plusieurs parties du dispositif d'étranglement (1) lors du montage final.
  4. Dispositif d'étranglement selon la revendication 1,
    caractérisé en ce qu'
    au moins une partie de boítier (2) du boítier à plusieurs parties est divisée en espaces creux (10) par des traverses (9) en forme de nervures, un fluide permettant de tempérer une paroi intérieure (8) de la partie de boítier (2) s'écoulant dans ces espaces creux.
  5. Dispositif d'étranglement selon la revendication 4,
    caractérisé en ce qu'
    au niveau de l'une des faces frontales (15, 16) des espaces creux (10) d'une partie de boítier (2) se trouve une surface de réception (7) permettant d'accueillir un élément d'étanchéité et de compensation (30, 31).
  6. Dispositif d'étranglement selon la revendication 2,
    caractérisé en ce qu'
    au niveau de l'élément d'étanchéité et de compensation (30, 31) se trouve une section en manchon (44) et/ou une surface d'appui (43) s'étendant en direction radiale au niveau de l'élément d'étanchéité et de compensation (30, 31).
  7. Dispositif d'étranglement selon la revendication 2,
    caractérisé en ce qu'
    au niveau de l'élément d'étanchéité et de compensation (30, 31), dans la zone de la section la plus mince (41), se trouve une évacuation coudée (40).
  8. Dispositif d'étranglement selon la revendication 2,
    caractérisé en ce qu'
    une paroi intérieure (46) de l'élément d'étanchéité et de compensation (30, 31) présente, de la section la plus large (42) à la section la plus mince (41), une extension correspondant à la surface d'enveloppe (45) d'un tronc de cône.
  9. Dispositif d'étranglement selon la revendication 2,
    caractérisé en ce qu'
    en fonction de la section la plus mince (41) au niveau de l'élément d'étanchéité et de compensation (30, 31), la section d'écoulement du dispositif d'étranglement (1) peut être adaptée de telle sorte que des ensembles d'étrangleur (37) d'un diamètre plus faible peuvent être intégrés dans une structure de boítier donnée.
  10. Dispositif d'étranglement selon la revendication 6,
    caractérisé en ce que
    l'élément d'étanchéité et de compensation (30, 31) isole de façon étanche avec un côté de la surface d'appui radiale (43) des espaces creux (10) dans une paroi double (8, 11) de la partie de boítier (2) et repose avec l'autre côté contre une surface de contact d'une autre partie de boítier d'un boítier à plusieurs parties, correspondant à la surface de contact (15) de la partie de boítier (2).
EP02015314A 2001-08-08 2002-07-10 Boitier de dispositif d'étranglement avec éléments de compensation pour moteurs à combustion interne Expired - Lifetime EP1283340B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10138931A DE10138931A1 (de) 2001-08-08 2001-08-08 Drosselvorrichtungsgehäuse mit flexiblen Ausgleichselementen für Brennkraftmaschinen
DE10138931 2001-08-08

Publications (3)

Publication Number Publication Date
EP1283340A2 EP1283340A2 (fr) 2003-02-12
EP1283340A3 EP1283340A3 (fr) 2003-12-10
EP1283340B1 true EP1283340B1 (fr) 2005-05-04

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EP02015314A Expired - Lifetime EP1283340B1 (fr) 2001-08-08 2002-07-10 Boitier de dispositif d'étranglement avec éléments de compensation pour moteurs à combustion interne

Country Status (4)

Country Link
US (1) US6761348B2 (fr)
EP (1) EP1283340B1 (fr)
JP (1) JP2003056373A (fr)
DE (2) DE10138931A1 (fr)

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DE19936457A1 (de) * 1999-08-03 2001-02-08 Mann & Hummel Filter Drosseleinrichtung mit einer Klappe zum Einbau in eine Flanschverbindung
EP1083317A3 (fr) * 1999-09-08 2001-09-05 Siemens Canada limited Elément de corps de papillon pour collecteur d'admission
US6354267B1 (en) 2000-03-28 2002-03-12 Borgwarner Inc. Injection molded throttle body
DE10114221A1 (de) 2001-03-23 2002-10-02 Bosch Gmbh Robert Beheizbare Drosselvorrichtung für Brennkraftmaschinen
JP2002297661A (ja) 2001-03-30 2002-10-11 Tokyo Electric Power Co Inc:The Ｗｅｂ検索装置

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US6761348B2 (en) 2004-07-13
EP1283340A3 (fr) 2003-12-10
JP2003056373A (ja) 2003-02-26
DE50202977D1 (de) 2005-06-09
DE10138931A1 (de) 2003-03-06
EP1283340A2 (fr) 2003-02-12
US20030030022A1 (en) 2003-02-13

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