EP0210098B1 - Zylinderkopf für Brennkraftmaschine mit Kraftstoffeinspritzung - Google Patents

Zylinderkopf für Brennkraftmaschine mit Kraftstoffeinspritzung Download PDF

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Publication number
EP0210098B1
EP0210098B1 EP86401435A EP86401435A EP0210098B1 EP 0210098 B1 EP0210098 B1 EP 0210098B1 EP 86401435 A EP86401435 A EP 86401435A EP 86401435 A EP86401435 A EP 86401435A EP 0210098 B1 EP0210098 B1 EP 0210098B1
Authority
EP
European Patent Office
Prior art keywords
cylinder head
injectors
injector
valve
head cap
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
Application number
EP86401435A
Other languages
English (en)
French (fr)
Other versions
EP0210098A1 (de
Inventor
Gabriel Laine
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.)
Automobiles Peugeot SA
Automobiles Citroen SA
Original Assignee
Automobiles Peugeot SA
Automobiles Citroen SA
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 Automobiles Peugeot SA, Automobiles Citroen SA filed Critical Automobiles Peugeot SA
Publication of EP0210098A1 publication Critical patent/EP0210098A1/de
Application granted granted Critical
Publication of EP0210098B1 publication Critical patent/EP0210098B1/de
Expired 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
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/14—Arrangements of injectors with respect to engines; Mounting of injectors
    • F02M61/145—Arrangements of injectors with respect to engines; Mounting of injectors the injection nozzle opening into the air intake conduit
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F1/00—Cylinders; Cylinder heads 
    • F02F1/24—Cylinder heads
    • F02F1/26—Cylinder heads having cooling means
    • F02F1/36—Cylinder heads having cooling means for liquid cooling
    • F02F1/38—Cylinder heads having cooling means for liquid cooling the cylinder heads being of overhead valve type
    • 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
    • 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
    • F02M69/46—Details, component parts or accessories not provided for in, or of interest apart from, the apparatus covered by groups F02M69/02 - F02M69/44
    • F02M69/462—Arrangement of fuel conduits, e.g. with valves for maintaining pressure in the pipes after the engine being shut-down
    • F02M69/465—Arrangement of fuel conduits, e.g. with valves for maintaining pressure in the pipes after the engine being shut-down of fuel rails
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B1/00—Engines characterised by fuel-air mixture compression
    • F02B1/02—Engines characterised by fuel-air mixture compression with positive ignition
    • F02B1/04—Engines characterised by fuel-air mixture compression with positive ignition with fuel-air mixture admission into cylinder
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B2275/00—Other engines, components or details, not provided for in other groups of this subclass
    • F02B2275/20—SOHC [Single overhead camshaft]
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F1/00—Cylinders; Cylinder heads 
    • F02F1/24—Cylinder heads
    • F02F2001/244—Arrangement of valve stems in cylinder heads
    • F02F2001/247—Arrangement of valve stems in cylinder heads the valve stems being orientated in parallel with the cylinder axis

Definitions

  • the invention relates to cylinder heads which equip certain combustion engines and which comprise, associated with each combustion chamber, at least one intake duct into which opens a fuel injector.
  • Each duct being closable, to the right of the corresponding chamber, by a stem valve, the cylinder head is generally topped with a cylinder head cover covering various valve control members, and in particular a camshaft and its bearings, rockers and their axis, valve return springs, and possibly pushers.
  • the injectors each open into an intake duct slightly upstream of the associated valve.
  • each intake duct connecting the corresponding chamber to an air intake manifold joined to the cylinder head the injector is usually fixed to the latter near the manifold, which does not always allow, in particular when the duct is relatively long or curved, to obtain an optimal jet of fuel, that is to say a jet directed at the valve, and short enough to wet only a small surface of the wall of the duct.
  • the injector being in direct contact with the cylinder head, a particularly hot element of the engine, the fuel which drains there is likely to overheat, or even to evaporate during an engine stop, which causes a significant difficulty in restarting the latter.
  • the cylinder head generally carrying several injectors associated respectively with several combustion chambers and supplied by pipes comprising in particular a common supply rail, these pipes are sometimes subject to ruptures because of the vibrations of the engine to which they are subject and because of their method of attachment at points relatively distant from each other.
  • DE-A-3 037 687 describes an internal combustion engine cylinder head, comprising combustion chambers with each of which is associated with at least one intake duct into which opens a fuel injector and which is closable, in line with the corresponding chamber, by a stem valve, a cylinder head cover covering valve control members, the injectors being supplied by pipes and each opening into an intake duct slightly upstream of the associated valve.
  • FR-A-1 019 300 describes an engine with an injector which passes tightly through the cylinder head cover.
  • DE-A-2 833 659 describes an engine with injectors each opening into an intake duct which are held by the supply pipe itself fixed on the intake duct.
  • the object of the invention is to produce a cylinder head fitted with injectors which provide an optimal fuel jet and the heating of which is not excessive, their supply being ensured by reliable pipes.
  • each injector sealingly passes through the cylinder head cover and is held thereon by the supply pipe itself fixed on the cylinder head cover, and an annular spacer slightly flexible and not very conductive of heat is clamped between the cylinder head and the cylinder head cover coaxially with each injector.
  • a cylinder head 1 of an internal combustion engine intended to cover by its underside 2 a cylinder block by delimiting with pistons several combustion chambers 3.
  • each chamber 3 open two intake ducts 4 , 5 and an exhaust duct 6 which can be closed off in the usual manner respectively by intake rod 7, 8 or exhaust rod valves (not visible because hidden by the valve 7 in FIG. 1).
  • the intake ducts 4, 5 open into a first lateral face 9 of the cylinder head 1, and the exhaust duct 6 opens into the opposite side 10, communicating respectively with intake 11 and exhaust 12.
  • the intake valve 7 and the exhaust valve are substantially perpendicular to the face 2 and located, above the chamber 3, on the side of the side face 10, and each cooperate with one of two parallel pushers 13 , 14 actuated respectively by a cam 15 and a cam 16 integral with a shaft 17 carried by the cylinder head 1 parallel to the faces 2, 9 and 10.
  • the intake valve 8 is significantly inclined with respect to the other two valves and is located, above the chamber 3, on the side of the side face 9, where it cooperates with a rocker arm oscillating on an axis 19 and actuated by a cam 20 of the shaft 17.
  • This axis 19 is carried by several bearing caps 21 which hold the shaft 17 on transverse partitions 22 of the cylinder head 1.
  • Each valve is conventionally returned to its seat by a spring such as that 23 corresponding to the valve 7.
  • a cylinder head cover 24 covers the cylinder head 1 so as to protect the shaft 17 and its bearings 21, the rocker arms 18 and their axis 19 as well as the pushers 13, 14 and the springs.
  • a fuel injector 25 opening into the intake duct 4 slightly upstream of the valve 7 passes through the cylinder head cover 24 by a bore 26, with the interposition of a ring d tightness 27, and is maintained on the cylinder head cover 24 by a supply pipe 28 fixed to the latter, and an annular spacer 29 made of slightly flexible material and good thermal insulator is sandwiched between the cylinder head 1 and the cylinder head cover 24 in line with bore 26, coaxially with injector 25.
  • the injector 25, orthogonal to the shaft 17, is substantially parallel to the valve 8 and directed so that it provides a jet of fuel J reaching the valve 7 near its seat, wetting only a small area of the wall of the duct 4, which ensures optimum operation of the motor.
  • An injector 25 being associated with each combustion chamber 3, the injectors 25 are mutually parallel and supplied with fuel by the line 28 which has a ramp 30 perpendicular to the injectors, provided with lateral tubular end pieces 31 each engaged on the outer end an injector 25, coaxially with it, with the interposition of a ring, of sealing 32.
  • the pipe 28 is fixed to the cylinder head cover 24 by screws 33 passing through lugs 34 which project from the ramp 30.
  • Each bore 26 is arranged at the bottom of a hollow portion 36 of the cylinder head cover.
  • This portion 36 forming a funnel is interposed, in a direction parallel to the shaft 17, between two rockers 18 associated one with the chamber 3, the other with an adjacent chamber.
  • This arrangement makes it possible to optimally approach the injector 25 of the valve 7, although the latter is distant from the face 9 where the associated duct opens out. This distance is advantageous because it allows the admission orifices in the chamber 3 (valves 7 and 8) to be roughly diametrically opposite, while leaving space, under the conduit 4, for a spark plug 37 whose electrodes are advantageously located near the center of the chamber 3.
  • the injector 25 being carried by the cylinder head cover 24 and the latter being separated from the cylinder head 1 by the spacer 29 which is not very conductive of heat, the heating of the injector is lower than if it was conventionally fixed directly to the cylinder head 1. The risk of fuel evaporation in the injector is therefore reduced. Furthermore, the fixing of the ramp 30 to the cylinder head cover 24 by several screws 33, which can be relatively close together, gives the pipe 28 a satisfactory rigidity and a good resistance to vibrations, all the more so since these are somewhat filtered, in line with the cylinder head cover 24, by the usual seal 38 between the latter and the cylinder head 1 and by the flexible spacers 29.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
  • Fuel-Injection Apparatus (AREA)

Claims (4)

1. Kopf für einen Verbrennungsmotor mit Brennkammern (3) zu denen jeweils wenigstens eine Ansaugleitung (4, 5) zugeordnet ist, in die ein Brennstoffinjektor (25) mündet, und die von der zugeordneten Kammer (3) durch ein Schaftventil (7, 8) verschließbar ist, wobei eine Kopfabdeckung (24) die Betätigungsorgane der Ventile bedeckt, die Injektoren (25) durch Leitungen (28) gespeist werden, und jeder in einen Zufuhrkanal (4) leicht oberhalb des zugeordneten Ventils (7) mündet, dadurch gekennzeichnet, daß jeder Injektor (25) in abgedichteter Weise die Kopfabdeckung (24) durchdringt und auf dieser durch die Zufuhrleitung (28) gehalten wird, die selbst an der Kopfabdeckung (24) befestigt ist, und daß eine ringförmige Abstandshülse (29), die leicht nachgiebig und wenig wärmeleitend ist, zwischen dem Kopf (1) und der Kopfabdeckung koaxial zu jedem Injektor (25) eingespannt ist.
2. Kopf nach Anspruch 1, dadurch gekennzeichnet, daß die Leitung (28), die mehrere Injektoren (25) speist, die im wesentlichen parallel zueinander angeordnet und eine Rampe (30) aufweisen, die im wesentlichen senkrecht zu den Injektoren (25) verläuft und mit zu diesen koaxialen rohrförmigen Endstücken (31) versehen und mit ihren äußeren Enden dichtend in Eingriff sind, die Rampe (30) mittels Schrauben (33), die im wesentlichen parallel zu den Injektoren (25) angeordnet sind, an der Kopfabdeckung (24) befestigt ist.
3. Kopf nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Ansaugleitung (4), die den Injektor (25) aufnimmt, der auf einer Seitenfläche (9) des Kopfes (1) mündet, deren von dem zugehörigen Ventil (7) verschließbares Ende in der zugehörigen Brennkammer (3) auf der Seite der gegenüberliegenden Seitenfläche (10) angeordnet ist.
4. Kopf nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß der Kopf (1) eine Welle (17) mit Nocken (15, 16, 20) trägt, die mittels Stößeln (13) mit den den Injektoren (25) zugeordneten Ventilen (7) und mittels Ventilschwinghebeln (18) mit anderen Ventilen (8) zusammenwirken, wobei die Injektoren (25) im wesentlichen parallel zu letzteren angeordnet sind, und die Kopfabdeckung (24) Bereiche (36) in Form eines Trichters aufweist, wobei jeder eine der Injektoren (25) enthält und jeder in paralleler Richtung zur Welle (17) zwischen zwei Ventilschwinghebeln (18) eingeschoben ist.
EP86401435A 1985-07-08 1986-06-27 Zylinderkopf für Brennkraftmaschine mit Kraftstoffeinspritzung Expired EP0210098B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8510423 1985-07-08
FR8510423A FR2584454B1 (fr) 1985-07-08 1985-07-08 Culasse de moteur a combustion interne alimente par injection

Publications (2)

Publication Number Publication Date
EP0210098A1 EP0210098A1 (de) 1987-01-28
EP0210098B1 true EP0210098B1 (de) 1989-01-25

Family

ID=9321071

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86401435A Expired EP0210098B1 (de) 1985-07-08 1986-06-27 Zylinderkopf für Brennkraftmaschine mit Kraftstoffeinspritzung

Country Status (6)

Country Link
US (1) US4757789A (de)
EP (1) EP0210098B1 (de)
JP (1) JPS6210469A (de)
BR (1) BR8603170A (de)
DE (1) DE3661959D1 (de)
FR (1) FR2584454B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006056043A1 (de) * 2006-11-28 2008-05-29 Volkswagen Ag Anordnung zur Positionierung einer Zylinderkopfhaube

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Publication number Priority date Publication date Assignee Title
JP2537205B2 (ja) * 1986-07-09 1996-09-25 本田技研工業株式会社 内燃機関の動弁装置
DE3736778C1 (de) * 1987-10-30 1988-10-27 Daimler Benz Ag Abdichtende Durchfuehrung einer Rohrleitung
JPH01170743A (ja) * 1987-12-25 1989-07-05 Sanshin Ind Co Ltd エンジンのシリンダヘッド
US4922876A (en) * 1988-03-25 1990-05-08 Aisan Kogyo Kabushiki Kaisha Fuel injection device
FR2643681B1 (fr) * 1989-02-27 1991-06-07 Peugeot Agencement pour le maintien et le positionnement de plusieurs injecteurs de carburant sur un moteur a combustion interne
JP2741755B2 (ja) * 1989-10-02 1998-04-22 ヤマハ発動機株式会社 空気燃料噴射式２サイクルエンジン
FR2663686B1 (fr) * 1990-06-21 1994-09-30 Peugeot Moteur a essence comportant un dispositif d'injection indirecte perfectionne et procede d'injection correspondant.
DE4212255C2 (de) * 1992-04-11 1996-12-19 Daimler Benz Ag Anordnung einer Kraftstoff-Einspritzvorrichtung am Gehäuse einer Brennkraftmaschine
DE9410232U1 (de) * 1994-06-27 1995-11-02 Bosch Gmbh Robert Kraftstoffeinspritzeinrichtung für Brennkraftmaschinen
JP3329998B2 (ja) * 1995-10-17 2002-09-30 三菱電機株式会社 筒内噴射用燃料噴射弁
JP3687758B2 (ja) * 1995-11-14 2005-08-24 株式会社デンソー 燃料噴射装置
US5884593A (en) * 1996-04-24 1999-03-23 Tecumseh Products Company Head and overhead camshaft assembly for an internal combustion engine
DE19629308C1 (de) * 1996-07-20 1997-10-23 Daimler Benz Ag Zylinderkopfhaube für eine Brennkraftmaschine
JP2000087796A (ja) * 1998-09-14 2000-03-28 Honda Motor Co Ltd Ｄｏｈｃ式エンジンのシリンダヘッド
JP2000145581A (ja) 1998-11-13 2000-05-26 Sanshin Ind Co Ltd 筒内燃料噴射式エンジン
JP4049344B2 (ja) * 1998-12-17 2008-02-20 ヤマハマリン株式会社 筒内燃料噴射式エンジン
US6298814B1 (en) * 2000-11-27 2001-10-09 Detroit Diesel Corporation Sectionalized rocker arm cover assembly
KR100542552B1 (ko) 2003-08-21 2006-01-11 삼성전자주식회사 인쇄회로기판, 및 이 인쇄회로기판을 갖는 화상기록장치
DE502004011493D1 (de) * 2004-12-03 2010-09-16 Ford Global Tech Llc Integriertes Einspritzsystem
JP2006170020A (ja) * 2004-12-14 2006-06-29 Yamaha Marine Co Ltd エンジン
DE102011113997B4 (de) * 2011-09-21 2022-01-27 Volkswagen Aktiengesellschaft Brennkraftmaschine
FR3054859B1 (fr) * 2016-08-05 2020-02-14 Peugeot Citroen Automobiles Sa Couvre culasse d’un moteur de vehicule
US20230143650A1 (en) * 2021-11-10 2023-05-11 Cummins Inc. Fuel system cover for an internal combustion engine

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DE760104C (de) * 1940-11-21 1952-10-20 Carl F W Borgward Zylinderkopf fuer Brennkraftmaschinen
FR1019300A (fr) * 1950-05-15 1953-01-20 Semt Soupape centrale à combustible pour moteur à combustion interne
US2685870A (en) * 1950-05-15 1954-08-10 Pielstick Gustav Central fuel valve for internalcombustion engines
US2772668A (en) * 1954-02-17 1956-12-04 Bosch Arma Corp Fuel injection system
DE1224092B (de) * 1959-07-04 1966-09-01 Kloeckner Humboldt Deutz Ag Einspritzbrennkraftmaschine
US3139870A (en) * 1962-01-03 1964-07-07 Sampietro Achille Carlo Internal combustion engines with four valves
GB967697A (en) * 1962-08-23 1964-08-26 Vauxhall Motors Ltd Internal combustion engine valve gear
DE2149817B2 (de) * 1971-10-06 1975-08-21 Daimler-Benz Ag, 7000 Stuttgart Anordnung eines Kraftstoffeinspritzventils zur elektronisch gesteuerten Benzineinspritzung in den Ansaugkanal einer Brennkraftmaschine
DE2641377A1 (de) * 1976-09-15 1978-03-16 Kloeckner Humboldt Deutz Ag Zylinderkopf fuer eine hubkolbenbrennkraftmaschine
DE2833659C2 (de) * 1978-08-01 1985-10-03 Bayerische Motoren Werke AG, 8000 München Kraftstoff-Verteiler für Brennkraftmaschinen
DE2926490A1 (de) * 1979-06-30 1981-02-05 Bosch Gmbh Robert Kraftstoffeinspritzanlage
GB2081809B (en) * 1980-08-14 1984-03-28 Yanmar Diesel Engine Co Direct fuel injection internal combustion engine
DE3037687A1 (de) * 1980-10-06 1982-05-13 Robert Bosch Gmbh, 7000 Stuttgart Differenzierglied
JPS57129255A (en) * 1981-02-04 1982-08-11 Mazda Motor Corp Fuel injection device for engine with supercharger

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006056043A1 (de) * 2006-11-28 2008-05-29 Volkswagen Ag Anordnung zur Positionierung einer Zylinderkopfhaube

Also Published As

Publication number Publication date
BR8603170A (pt) 1987-02-24
FR2584454B1 (fr) 1987-11-20
EP0210098A1 (de) 1987-01-28
DE3661959D1 (en) 1989-03-02
JPS6210469A (ja) 1987-01-19
US4757789A (en) 1988-07-19
FR2584454A1 (fr) 1987-01-09

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