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WO1988002067A1 - Composant d'un systeme d'injection de carburants - Google Patents

Composant d'un systeme d'injection de carburants Download PDF

Info

Publication number
WO1988002067A1
WO1988002067A1 PCT/GB1987/000645 GB8700645W WO8802067A1 WO 1988002067 A1 WO1988002067 A1 WO 1988002067A1 GB 8700645 W GB8700645 W GB 8700645W WO 8802067 A1 WO8802067 A1 WO 8802067A1
Authority
WO
WIPO (PCT)
Prior art keywords
injection system
fuel injection
system component
block
fuel
Prior art date
Application number
PCT/GB1987/000645
Other languages
English (en)
Inventor
John Turner
Peter Oliff
Original Assignee
Ford Motor Company
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 Ford Motor Company filed Critical Ford Motor Company
Publication of WO1988002067A1 publication Critical patent/WO1988002067A1/fr

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
    • F02M69/044—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

Definitions

  • This invention relates to a component for a fuel injectio system for use with an internal combustion engine.
  • a fuel injection system component adapted to interface at one side with an engine cylinder head and at another side with an air intake manifold, the component comprising a block in which a plurality of air passages extend from said one side to said another side, the block including at least one passage for each cylinder of the engine, a plurality of fuel injector seats, and fuel feed and return passages communicating with the injector seats.
  • the injector seats are preferably adapted to receive tip-feed injectors, and each seat may contain such an injector.
  • tip-feed injectors is of benefit in the hot fuel handling operation of the system. This benefit is further enhanced by inclusion of the fuel inlet and return lines in the injection unit, thereby providing an efficient method of purging any gases or moisture from the system.
  • the fuel line connections to the individual injectors are made inside the block.
  • the block can thus be put together off line " and tested for fuel tightness before being assembled to the engine on the main assembly line. All that is then required on the assembly line is to connect fuel feed and fuel return lines to the block, and these connections can be made through connectors of a type which are simple to secure.
  • a conventional fuel rail includes a pressure regulator for controlling the fuel pressure in the rail.
  • the pressure regulator may be incorporated in the block of the invention, either as a bolt-on unit, or the regulator body may be formed integrally in the block.
  • the port deactivation valve may be incorporated into the air passages through the component together with associated mechanical activation linkages.
  • the port deactivation valve may be in either tract of a twin inlet valve engine. There may be a single injector feeding either one or the other of the tracts, or mounted centrally between the tracts with a divided spray.
  • the spray divider could be mounted on the injector itself, or formed as part of the block. Alternatively, there could be an injector for each tract, preferably with a balance passage between the tracts.
  • An idle air supply duct can be provided in the block to supply idle air to the engine independently of the air supply route employed when the engine is running under full or part load.
  • This idle air can be supplied through an idle speed valve or motor functioning in a known manner, but the valve or motor itself can be built in to the block in the same manner as the pressure regulator.
  • the block may also include a crankcase air inlet.
  • Passages are provided to communicate the idle air and crankcase emissions to the inlet port.
  • the idle air passage and the crankcase emission passage may be independent or combined, and can be fed to primary or secondary inlet tracts.
  • Non-return valves can be provided in the block to prevent pressure interaction between different intake ports.
  • Figure 1 is a diagrammatic, sectional view through an injection system component in accordance with the present invention.
  • Figure 2 is- a plan view, partly in section, of the component of Figure l.
  • the component shown comprises a block 10 which will normally be of cast metal, such as aluminium or an aluminium alloy machined to provide the necessary seats and mating faces which will be detailed later on.
  • the block will replace the downstream end of the air intake tract 14.
  • the block 10 is attached to a cylinder head 12 in a conventional manner, with the interposition of a gasket which is not shown. Upstream the block is connected, again with the interposition of a gasket, to air inlet tracts 14. Tightness between the block and the cylinder head is essential to maintain fuel integrity. The joint between the block 10 and the tracts 14 will be made tight but is not crucial to the fuel integrity, as fuel is only introduced downstream of this joint. It is however essential that the seal be air-tight to allow correct functioning of the complete inlet system.
  • An air passage 16 runs through the block 10.
  • a fuel injector 18 is fitted in a seat 20 so as to communicate with a fuel feed passage 22 and a fuel return passage 24.
  • the injector shown is a tip-feed injector which has a short overall length and can be completely housed in the seat 20 with the only projecting part being the necessary electrical connections 26. In this way, the injector can be fully sealed in the block.
  • the injector will be positioned so as to direct injected fuel at the engine intake valve 28.
  • Port deactivation allows two or more tracts to be available to supply air to any one cylinder at times of peak demand, and for one or more of these tracts to be opened or closed as required for particular engine operating conditions.
  • a crankcase air inlet 32 (to cope with crankcase emissions) is provided in the block together with an idle air inlet 34 which is connected through an idle speed valve or motor 36.
  • a pressure regulator for controlling the fuel pressure in the fuel return passage 24 is fitted in the passage 24.
  • the pressure regulator comprises a housing which is formed directly in the block 10, by suitable casting or machining of a cavity in the block.
  • a cap 38 is then fitted in the block 10 to complete the regulator.
  • the housing for the idle speed valve or motor 36 is formed directly in the block 10.
  • the block 10 can be of aluminium (or other metals) or of plastics. It is not exposed to great heat, but an insulating body should be fitted between the cylinder head 12 and the block 10 to prevent excessive heat transfer from the engine to the block 10. It may be possible for the gasket to provide this heat insulating function.
  • the complete component can be used equally effectively with engines with one or more inlet valves per cylinder.
  • the use of a single block allows complete preassembly and pretesting of the fuel supply connections. At the time of final engine assembly, it will only be necessary to fit fuel pipes to a block inlet 40 and a block outlet 42, and this can be done through conventional pipe unions which are unlikely to present any leakage problems. Electrical connections are required to the injectors, as are crankcase air and idle air bypass connections to the block, but none of these will interfere with fuel integrity.
  • a potentiometer mounted as part of the port de ⁇ activation system so that the angular position of the port deactivation throttles can be used as an input to an engine management computer;
  • a Schrader valve in the fuel inlet or return system to enable fuel pressure to be monitored for engine servicing and fault-finding.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)

Abstract

Afin d'améliorer le niveau d'étanchéité du parcours du carburant, on fabrique les injecteurs de carburant (18) ainsi que les passages associés (22 et 24) d'alimentation en carburant et de retour du carburant en un seul bloc (10) qui comprend également les passages d'alimentation en air (16) des cylindres du moteur. L'incorporation de tous ces éléments en un seul bloc permet d'assembler le bloc préalablement et de le soumettre à un essai d'étanchéité au carburant avant son incorporation dans le moteur.
PCT/GB1987/000645 1986-09-17 1987-09-16 Composant d'un systeme d'injection de carburants WO1988002067A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB08622425A GB2195394A (en) 1986-09-17 1986-09-17 Fuel injection system component
GB8622425 1986-09-17

Publications (1)

Publication Number Publication Date
WO1988002067A1 true WO1988002067A1 (fr) 1988-03-24

Family

ID=10604345

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1987/000645 WO1988002067A1 (fr) 1986-09-17 1987-09-16 Composant d'un systeme d'injection de carburants

Country Status (6)

Country Link
EP (1) EP0261855B1 (fr)
AT (1) ATE69294T1 (fr)
AU (1) AU608249B2 (fr)
DE (1) DE3774384D1 (fr)
GB (1) GB2195394A (fr)
WO (1) WO1988002067A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4966120A (en) * 1987-07-29 1990-10-30 Aisan Kogyo Kabushiki Kaisha Fuel injection system assembly
WO2000042314A1 (fr) * 1999-01-12 2000-07-20 Volvo Personvagnar Ab Agencement pour moteurs a combustion interne

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2203487A (en) * 1987-04-03 1988-10-19 Ford Motor Co A fuel injection system component
US4776313A (en) * 1987-06-01 1988-10-11 Ford Motor Company Compact integrated engine induction air/fuel system
DE3730571C2 (de) * 1987-09-11 1998-07-02 Bosch Gmbh Robert Vorrichtung zur Halterung, Kraftstoffversorgung und elektrischen Kontaktierung von elektromagnetisch betätigbaren Kraftstoffeinspritzventilen
IT1211445B (it) * 1987-10-30 1989-10-26 Weber Srl Dispositivo integrato formatore e dosatore di una miscela di aria e carburante per un motore a combustione interna alimentato da un sistema ad iniezione multipoints
IT214868Z2 (it) * 1988-09-30 1990-07-04 Weber Srl Semilavorato per realizzare un collettore di alimentazione del carburante per un dispositivo di alimentazione di un motore a combustione interna
US5207205A (en) * 1988-12-07 1993-05-04 Siemens Automotive L.P. Fuel injection device with air-assisted fuel diffusion
DE3841088A1 (de) * 1988-12-07 1990-06-21 Mesenich Gerhard Kraftstoffeinspritzvorrichtung mit luftunterstuetzter kraftstoffzerstaeubung
JPH02107758U (fr) * 1989-02-14 1990-08-28
DE3907764A1 (de) * 1989-03-10 1990-09-13 Bosch Gmbh Robert Kraftstoffverteiler fuer kraftstoffeinspritzanlagen von brennkraftmaschinen
DE3934906C1 (fr) * 1989-10-20 1990-11-08 Dr.Ing.H.C. F. Porsche Ag, 7000 Stuttgart, De
FR2660373A1 (fr) * 1990-04-03 1991-10-04 Siemens Automotive Sa Dispositif d'injection de carburant pour moteur a combustion interne.
GB9103833D0 (en) * 1991-02-23 1991-04-10 Jaguar Cars Inlet manifold and fuel supply system
SE468719B (sv) * 1991-07-02 1993-03-08 Saab Scania Ab Arrangemang foer braensleledning vid foerbraenningsmotor
DE4205709A1 (de) * 1992-02-25 1993-08-26 Bosch Gmbh Robert Gasverteiler fuer brennstoffeinspritzanlagen
FR2701295B1 (fr) * 1993-02-05 1995-04-28 Sindra Sa Rampe d'injection de carburant et l'un de ses procédés de fabrication.
DE102007059217A1 (de) * 2007-12-08 2009-06-10 Deutz Ag Leckagebrennstoffabführsystem
CN117189436A (zh) * 2022-05-30 2023-12-08 康明斯公司 进气歧管集成式排放枪

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2543242A1 (de) * 1975-09-27 1977-04-07 Irmscher Kg Ansaugtrichter fuer otto-motoren mit mechanischer oder elektronischer kraftstoffeinspritzung
DE2940754A1 (de) * 1978-10-09 1980-04-10 Nissan Motor Treibstoffzufuehrvorrichtung fuer einen mehrzylindrigen verbrennungsmotor
GB2074233A (en) * 1978-02-07 1981-10-28 Bendix Corp Fuel-handling arrangement in an I.C. engine fuel-injection system
EP0098549A1 (fr) * 1982-07-02 1984-01-18 Hitachi, Ltd. Système d'injection de carburant
DE3326408A1 (de) * 1982-08-23 1984-02-23 General Motors Corp., Detroit, Mich. Montagegestell fuer kraftstoffeinspritzeinrichtungen von brennkraftmaschinen
EP0134024A2 (fr) * 1983-08-09 1985-03-13 Hitachi, Ltd. Appareil d'injection de combustible
US4512311A (en) * 1980-10-20 1985-04-23 Yamaha Hatsudoki Kabushiki Kaisha Intake control system for multi-valve type internal combustion engine
EP0182473A1 (fr) * 1984-10-23 1986-05-28 Ford Motor Company Limited Dispositif d'admission pour moteur à combustion interne
EP0233697A1 (fr) * 1986-02-12 1987-08-26 General Motors Corporation Régulateur de pression de carburant intégré

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3125078A (en) * 1964-03-17 Fuel supply system

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2543242A1 (de) * 1975-09-27 1977-04-07 Irmscher Kg Ansaugtrichter fuer otto-motoren mit mechanischer oder elektronischer kraftstoffeinspritzung
GB2074233A (en) * 1978-02-07 1981-10-28 Bendix Corp Fuel-handling arrangement in an I.C. engine fuel-injection system
DE2940754A1 (de) * 1978-10-09 1980-04-10 Nissan Motor Treibstoffzufuehrvorrichtung fuer einen mehrzylindrigen verbrennungsmotor
US4512311A (en) * 1980-10-20 1985-04-23 Yamaha Hatsudoki Kabushiki Kaisha Intake control system for multi-valve type internal combustion engine
EP0098549A1 (fr) * 1982-07-02 1984-01-18 Hitachi, Ltd. Système d'injection de carburant
DE3326408A1 (de) * 1982-08-23 1984-02-23 General Motors Corp., Detroit, Mich. Montagegestell fuer kraftstoffeinspritzeinrichtungen von brennkraftmaschinen
EP0134024A2 (fr) * 1983-08-09 1985-03-13 Hitachi, Ltd. Appareil d'injection de combustible
EP0182473A1 (fr) * 1984-10-23 1986-05-28 Ford Motor Company Limited Dispositif d'admission pour moteur à combustion interne
EP0233697A1 (fr) * 1986-02-12 1987-08-26 General Motors Corporation Régulateur de pression de carburant intégré

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4966120A (en) * 1987-07-29 1990-10-30 Aisan Kogyo Kabushiki Kaisha Fuel injection system assembly
WO2000042314A1 (fr) * 1999-01-12 2000-07-20 Volvo Personvagnar Ab Agencement pour moteurs a combustion interne
US6412466B2 (en) 1999-01-12 2002-07-02 Volvo Car Corporation Internal combustion engine arrangement

Also Published As

Publication number Publication date
AU7916687A (en) 1988-04-07
ATE69294T1 (de) 1991-11-15
GB2195394A (en) 1988-04-07
GB8622425D0 (en) 1986-10-22
EP0261855A1 (fr) 1988-03-30
DE3774384D1 (de) 1991-12-12
AU608249B2 (en) 1991-03-28
EP0261855B1 (fr) 1991-11-06

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