EP2370687A1 - Machine à combustion interne - Google Patents

Machine à combustion interne

Info

Publication number
EP2370687A1
EP2370687A1 EP09756322A EP09756322A EP2370687A1 EP 2370687 A1 EP2370687 A1 EP 2370687A1 EP 09756322 A EP09756322 A EP 09756322A EP 09756322 A EP09756322 A EP 09756322A EP 2370687 A1 EP2370687 A1 EP 2370687A1
Authority
EP
European Patent Office
Prior art keywords
valve
injection
inlet
internal combustion
injection valve
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
EP09756322A
Other languages
German (de)
English (en)
Other versions
EP2370687B1 (fr
Inventor
Michael Baeuerle
Alexander Schenck Zu Schweinsberg
Klaus Ries-Mueller
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 EP2370687A1 publication Critical patent/EP2370687A1/fr
Application granted granted Critical
Publication of EP2370687B1 publication Critical patent/EP2370687B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • F02M69/00—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel
    • F02M69/04—Injectors peculiar thereto
    • F02M69/042—Positioning of injectors with respect to engine, e.g. in the air intake conduit
    • F02M69/043—Positioning of injectors with respect to engine, e.g. in the air intake conduit for injecting into the intake conduit upstream of an air throttle valve
    • 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
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F02M63/02—Fuel-injection apparatus having several injectors fed by a common pumping element, or having several pumping elements feeding a common injector; Fuel-injection apparatus having provisions for cutting-out pumps, pumping elements, or injectors; Fuel-injection apparatus having provisions for variably interconnecting pumping elements and injectors alternatively
    • 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
    • F02M69/00—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel
    • F02M69/04—Injectors peculiar thereto
    • F02M69/042—Positioning of injectors with respect to engine, e.g. in the air intake conduit
    • F02M69/044—Positioning of injectors with respect to engine, e.g. in the air intake conduit for injecting into the intake conduit downstream of an air throttle valve

Definitions

  • the invention relates to an internal combustion engine, according to the preamble of claim 1.
  • JP-10196440 A injects the first injection valve upstream of a throttle inserted into the intake duct for air flow control and the second injection valve downstream of the throttle valve respectively in the intake passage of the internal combustion engine, wherein the injection of the second injection valve in time before Injection is made by the first injection valve.
  • the internal combustion engine according to the invention with the features of claim 1 has the advantage that with the two injected into the intake passage of the at least one combustion cylinder, differently designed injection valves, the fuel input in the direction of intake valve can be performed in different ways, in different
  • the injection valves are electrically controllable solenoid valves.
  • Such solenoid valves are significantly less expensive than commonly used piezoelectric injectors.
  • Fig. 1 detail a longitudinal section of a combustion cylinder a
  • Fig. 2 is a diagram for driving areas of the injection valves of
  • FIG. 3 shows a detail of a plan view in the direction of arrow III in FIG. 2 with injection valves inserted into an intake passage of the internal combustion engine
  • FIG. 6 is a similar view as in Fig. 3 of another embodiment of a combustion cylinder
  • Fig. 8 is a section along the line VIII - VIII in Figure 6.
  • a combustion cylinder 11 is shown in fragmentary longitudinal section in Fig. 1 schematically.
  • the outside of a cooling water jacket 12 surrounded combustion cylinder 11 is frontally covered by a cylinder head 13 gas-tight.
  • a in the combustion cylinder 11 axially displaceable guided reciprocating piston 14 is limited together with the cylinder head 13, a combustion chamber 15.
  • the reciprocating piston 14 is connected via a connecting rod 16 with a crankshaft, not shown here, act on the piston and the other combustion cylinder.
  • the combustion chamber 15 has an inlet 18 closable with an inlet valve 17 and an outlet 20 closable with an outlet valve 19.
  • a combustion air intake duct 21 is guided, which is composed of an inlet duct 22 formed in the cylinder head 13 and a suction duct 23 attached to the inlet duct 22.
  • the suction pipes 23 of a plurality of combustion cylinders 11 are combined by means of a Saugrohrkrümmers to an air intake in which an air quantity control member, preferably a throttle valve is arranged to regulate the air flow.
  • the throttle valve 36 is shown in the suction tube 23 of a combustion cylinder 11 only for clarity.
  • an exhaust duct 24 is removed, which consists of an exhaust duct 25 formed in the cylinder head 13 and an exhaust pipe 26 attached to the exhaust duct 25.
  • the exhaust pipes 26 of a plurality of combustion cylinders 11 are combined downstream via an exhaust manifold.
  • a fuel injection device 27 For fuel supply to the combustion chamber 15 of the at least one combustion cylinder 11, a fuel injection device 27 is provided which has two electromagnetic injection valves 28, 29 per combustion cylinder 11 or per combustion chamber 15.
  • the two injection valves 28, 29 are supplied with fuel by a fuel pump 31 which delivers fuel from a fuel tank 30 and is controlled by an electronic control unit 32, which is supplied with a plurality of parameters defining the operating points of the internal combustion engine.
  • the two injection valves 28, 29 are downstream of the throttle valve 36 in the intake passage 21, here in the suction tube 23, held insertion 33,37 (Fig. 3 to 5) inserted so that they can inject fuel into the intake passage 21, wherein the fuel sprayed in the form of spray cones from the injection valves 28, 29 is sprayed.
  • the two injectors 28, 29 arranged as close as possible to the inlet valve 17 are aligned so that their spray cones are directed towards the inlet valve 17.
  • the two injection valves 28, 29 are formed differently both in terms of fuel flow and in terms of the formation of the sprayed-off fuel spray cone.
  • the first injection valve 28 injects a wide-spread spray cone 34 (FIG. 5) with a large cone angle and the second injection valve 29 clearly sprays a spray cone 35 (FIG. 4) which is only slightly fanned out smaller cone angle.
  • the spray cone 35 of the second injection valve 29 has a much greater penetration, so it can penetrate much deeper into the combustion chamber 15 with open inlet valve 17 as the spray cone 34 of the first injection valve 28 with much smaller penetration.
  • the second injection valve 29 is also designed in comparison to the first injection valve 28 for a significantly larger fuel flow and can, for. B at least 70% of the full load amount.
  • the Einstecköffhung 33 for the first injection valve 28 has a slightly greater distance from the inlet 18, as the Einstecgroffhung 37 for the second injection valve 29 so that the Abspritzöffhung the first injector 28 is slightly further away from the inlet valve 17 as the Abspritzöffhung the second Injector 29.
  • An equal spacing arrangement of the two Einstecköffhungen 33, 37 from the inlet 18 is also possible.
  • the combustion chamber 15 with cylinder head 13 is modified to the extent that two inlets 18, 18 'are present, each of which is provided by an inlet valve 17 or 17'. are closable.
  • a first combustion air intake duct 21 is guided (FIG. 7)
  • a second combustion air intake duct 21' is guided (FIG. 8).
  • the fuel supply of the combustion chamber 15 takes place in the same manner as described above in connection with FIG. 1.
  • the first injection valve 28 is inserted in the same manner near the inlet valve 17 into an insertion opening 33 held in the first intake passage 21, again here in the intake pipe 23, in order to inject fuel into the first intake passage 21.
  • the second injection valve 29 is inserted in the same manner near the second inlet valve 17 'in a in the second intake passage 21', here again in the intake pipe 23 'held insertion opening 37 to inject fuel into the second intake passage 21'.
  • Both injectors 28, 29 are formed as described above and in turn aligned so that their spray cone 34, 35 is directed to the respectively associated inlet valve 17 and 17 '. As can be seen from FIGS.
  • the opening cross-section of the two inlets 18, 18 'in the combustion chamber 15 of the combustion cylinder 11 varies in size.
  • the first injection valve 28 is assigned to the first intake passage 21 leading to the smaller-diameter first intake 18, while the second injection valve 29 is injected into the second intake passage 21 'leading to the larger-cross-sectional second intake 18'.
  • the cross sections of the two intake passages 21, 21 ', more precisely the cross sections of the intake passages 22, 22 'in the cylinder head 13, can be the same size, but - as shown in Fig. 6 to 8 - also be different sizes, wherein the first intake passage 21, in which injects the first injection valve 28, the smaller diameter having.
  • the two inlet valves 17, 17 ' may have a different valve lift.
  • the assignment of the two injection valves 28, 29 to the intake valves 17, 17 ' is then made such that the first injection valve 28 is associated with the intake valve 17 with the smaller valve lift and the second injection valve 29 with the intake valve 17' with the larger valve lift.
  • one of the inlet valves 17, 17 ' is provided with a valve mask and the first injection valve 28 injects into the intake passage leading to the intake valve with valve masking.
  • the two injection valves 28, 29 at different distances from the respective associated inlet valve 17 or 17 'in the intake channel 21 or in the exemplary embodiment in FIGS. 21 ' may be arranged.
  • the first injection valve 28 has a slightly greater distance from the first inlet valve 17 than the second injection valve 29 from the second inlet valve 17 '.
  • the two injection valves 28, 29 are controlled differently per combustion cylinder 11 by the electronic control unit 32 as a function of the operating points of the internal combustion engine.
  • a diagram is stored in the control unit 32, as shown schematically in FIG.
  • the hatched area marked 40 in the diagram shows the range of small partial load, in which only the first injection valve 28 is used for fuel introduction into the combustion chamber 15.
  • the cross-hatched area marked 41 serves for scavenging, in which only the second injection valve 29 with a small spray cone 35 and high penetration is activated, which does not generate any appreciable wall film in front of the inlet 18 of the combustion chamber 15.
  • both injection valves 28, 29 are activated for fuel injection.
  • the two intake valves 17, 17 'per combustion chamber 15 on time staggered opening phases.
  • the injectors 28, 29 are then associated with the intake valves 17, 17 'in such a manner that the first intake valve 28 is disposed in the intake passage 21 leading to the earlier-opening intake valve 17 and the second injection valve 29 is disposed in the later-opening intake valve 17' ,
  • the first injection valve 17 can be controlled by the control electronics 32 so that it sprays fuel only at a time to which the second inlet valve 17 'public, so an overlap of the open inlet 13, 13' and Outlet 20 of the combustion chamber 15 is safely excluded.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
  • Combustion Methods Of Internal-Combustion Engines (AREA)

Abstract

L'invention concerne une machine à combustion interne possédant au moins une chambre de combustion (15) pouvant être fermée par une soupape d'admission (17) et au moins une canalisation d'aspiration d'air (21) aboutissant à la soupape d'admission (17), ainsi qu'un dispositif d'injection de carburant (27) qui, en association avec ladite au moins une chambre de combustion (15), possède une première et une deuxième soupape d'injection (28, 29) destinées à injecter de manière dosée le carburant dans ledit au moins un canal d'aspiration (21). Afin d'obtenir une nette amélioration de la préparation du mélange et de la combustion du mélange d'air et de carburant dans la chambre de combustion (15), les deux soupapes d'injection (28, 29) sont configurées de manière que la première soupape d'injection (28) produise un cône de pulvérisation large (34) ayant un large angle de cône et la deuxième soupape d'injection (29) produise un cône de pulvérisation étroit (35) ayant un angle de cône nettement inférieur.
EP09756322A 2008-12-01 2009-11-24 Machine à combustion interne Not-in-force EP2370687B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008044244A DE102008044244A1 (de) 2008-12-01 2008-12-01 Brennkraftmaschine
PCT/EP2009/065708 WO2010063615A1 (fr) 2008-12-01 2009-11-24 Machine à combustion interne

Publications (2)

Publication Number Publication Date
EP2370687A1 true EP2370687A1 (fr) 2011-10-05
EP2370687B1 EP2370687B1 (fr) 2013-01-23

Family

ID=41666542

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09756322A Not-in-force EP2370687B1 (fr) 2008-12-01 2009-11-24 Machine à combustion interne

Country Status (8)

Country Link
US (1) US9169818B2 (fr)
EP (1) EP2370687B1 (fr)
JP (1) JP5362028B2 (fr)
KR (1) KR101623358B1 (fr)
CN (1) CN102232143B (fr)
DE (1) DE102008044244A1 (fr)
ES (1) ES2398879T3 (fr)
WO (1) WO2010063615A1 (fr)

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DE102010029935B4 (de) 2010-06-10 2023-01-26 Robert Bosch Gmbh Verfahren und Vorrichtung zum Zuführen von Kraftstoff in einem Verbrennungsmotor
JP5549544B2 (ja) * 2010-11-02 2014-07-16 三菱自動車工業株式会社 内燃機関の制御装置
DE102010064184B4 (de) 2010-12-27 2023-02-09 Robert Bosch Gmbh Verfahren zum Betrieb einer Einspritzanlage für eine Brennkraftmaschine
DE102010064155A1 (de) 2010-12-27 2012-06-28 Robert Bosch Gmbh Vorrichtung zum Einspritzen und Zünden von Kraftstoff und Verfahren zum Betrieb einer Vorrichtung zum Einspritzen und Zünden von Kraftstoff
DE102010064175A1 (de) 2010-12-27 2012-06-28 Robert Bosch Gmbh Einspritzsystem, Brennkraftmaschine und Verfahren zum Betrieb eines Einspritzsystems
DE102010064163A1 (de) 2010-12-27 2012-06-28 Robert Bosch Gmbh Einspritzsystem, Brennkraftmaschine und Verfahren zum Betrieb einer Brennkraftmaschine
DE102011007367A1 (de) 2011-04-14 2012-10-18 Robert Bosch Gmbh Ansaug- und Einsprizvorrichtung, System und Brennkraftmaschine
DE102012206882A1 (de) * 2012-04-26 2013-07-18 Continental Automotive Gmbh Betriebsverfahren und Vorrichtung zur Kraftstoffversorgung für eine Brennkraftmaschine
DE102012209030B4 (de) 2012-05-30 2023-09-21 Robert Bosch Gmbh Verfahren zur Steuerung einer Brennkraftmaschine und System mit einer Brennkraftmaschine, einem Kraftstoffspeicher und einem Steuergerät
DE102012210937A1 (de) 2012-06-27 2014-01-23 Robert Bosch Gmbh Verfahren zur Steuerung einer Brennkraftmaschine und System mit einer Brennkraftmaschine und einem Steuergerät
DE102012210952A1 (de) 2012-06-27 2014-01-23 Robert Bosch Gmbh Verfahren zur Steuerung einer Brennkraftmaschine und System mit einer Brennkraftmaschine und einem Steuergerät
DE102015200456A1 (de) 2015-01-14 2016-07-14 Ford Global Technologies, Llc Motor, Kraftfahrzeug, Einspritzverfahren
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US10534882B2 (en) * 2016-03-29 2020-01-14 Qualcomm Incorporated Method and apparatus for configuring an integrated circuit with a requested feature set
JP6670718B2 (ja) * 2016-09-28 2020-03-25 日立オートモティブシステムズ株式会社 制御装置
FR3080888B1 (fr) * 2018-05-04 2020-10-23 Ifp Energies Now Dispositif d'admission de gaz avec une intersection du conduit d'admission et de la calibration de soupape inclinee par rapport a la face feu
CN120968934B (zh) * 2025-10-21 2026-04-21 潍柴动力股份有限公司 一种双喷系统控制方法、装置、发动机和汽车

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Also Published As

Publication number Publication date
DE102008044244A1 (de) 2010-06-02
JP5362028B2 (ja) 2013-12-11
WO2010063615A1 (fr) 2010-06-10
CN102232143B (zh) 2014-10-29
KR20110095876A (ko) 2011-08-25
CN102232143A (zh) 2011-11-02
US9169818B2 (en) 2015-10-27
EP2370687B1 (fr) 2013-01-23
ES2398879T3 (es) 2013-03-22
US20110283974A1 (en) 2011-11-24
KR101623358B1 (ko) 2016-05-23
JP2012510589A (ja) 2012-05-10

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