EP0365529B1 - Fuel injection system component - Google Patents

Fuel injection system component Download PDF

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Publication number
EP0365529B1
EP0365529B1 EP88902894A EP88902894A EP0365529B1 EP 0365529 B1 EP0365529 B1 EP 0365529B1 EP 88902894 A EP88902894 A EP 88902894A EP 88902894 A EP88902894 A EP 88902894A EP 0365529 B1 EP0365529 B1 EP 0365529B1
Authority
EP
European Patent Office
Prior art keywords
passages
component
face
fuel
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.)
Expired - Lifetime
Application number
EP88902894A
Other languages
German (de)
French (fr)
Other versions
EP0365529A1 (en
Inventor
Kenneth Leonard Stanton
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.)
Ford Werke GmbH
Ford France SA
Ford Motor Company Ltd
Ford Motor Co
Original Assignee
Ford Werke GmbH
Ford France SA
Ford Motor Company Ltd
Ford Motor Co
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 Werke GmbH, Ford France SA, Ford Motor Company Ltd, Ford Motor Co filed Critical Ford Werke GmbH
Publication of EP0365529A1 publication Critical patent/EP0365529A1/en
Application granted granted Critical
Publication of EP0365529B1 publication Critical patent/EP0365529B1/en
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
    • 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
    • F02M35/10288—Air intakes combined with another engine part, e.g. cylinder head cover or being cast in one piece with the exhaust manifold, cylinder head or engine block
    • 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
    • F02M35/10078—Connections of intake systems to the engine
    • 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
    • F02M35/10209—Fluid connections to the air intake system; their arrangement of pipes, valves or the like
    • F02M35/10216—Fuel injectors; Fuel pipes or rails; Fuel pumps or pressure regulators
    • 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
    • F02M35/10209—Fluid connections to the air intake system; their arrangement of pipes, valves or the like
    • F02M35/10222—Exhaust gas recirculation [EGR]; Positive crankcase ventilation [PCV]; Additional air admission, lubricant or fuel vapour admission
    • 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
    • F02M35/104—Intake manifolds
    • F02M35/108—Intake manifolds with primary and secondary intake passages
    • 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
    • F02M35/104—Intake manifolds
    • F02M35/112—Intake manifolds for engines with cylinders all in one line
    • 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
    • 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
    • F02M35/1034—Manufacturing and assembling intake systems
    • F02M35/10347—Moulding, casting or the like

Definitions

  • This invention relates to a component for a fuel injection system for use with an internal combustion engine, and particularly to a component as described in EP-A-0 261 855.
  • 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.
  • a fuel injection system component is also known from GB-A-2 142 089 which is adapted to be mounted between a cylinder head of an internal combustion engine and an air intake manifold and which has a plurality of main air passages extending through the component, a plurality of fuel injector seats and an end face adapted to interface directly with the engine cylinder head.
  • US-A-4 318 380 also shows a way of providing an idle-air supply duct.
  • This idle-air supply duct extends from am open-sided groove in the end face of a fuel system component of a carburetor engine, said end face interfacing directly with the engine cylinder head.
  • the idle air supply duct extends outside of the fuel component in the cylinder head, independently of the air supply route employed when the engine is running at load.
  • the general design of the idle air supply duct is therefore complicated and involves high production costs.
  • the invention proposes a cost effective way of providing an idle air duct in the component that is known from GB-A-2 142 089, whilst avoiding the disadvantages of the proposals known from US-A-4 318 380.
  • a fuel injection system component adapted to be mounted between an engine cylinder head of an internal combustion engine and an air intake manifold and having a plurality of main air passages extending through the component, a plurality of fuel injector seats, and an end face adapted to interface directly with the engine cylinder head, characterised in that said component comprises at least one main air passage for each cylinder of the engine, fuel feed and return passages communicating with the injector seats, and an idle air supply duct formed as an open-sided groove in said end face providing an idle air supply path from an idle air valve to each main air passage.
  • a second open-sided groove can be formed in the same end face as the idle air supply duct, to provide ducts for conducting crankcase emissions to the main air passages.
  • the second open-sided groove opens into the main air passages away from the fuel injector positions, to avoid any possibility of fouling the injectors.
  • the open sides of the open-sided grooves will be closed by the cylinder head or intake manifold with which the said end face interfaces, so that the supply ducts are completed. Normally, the open sides will be closed by a gasket between the mating faces.
  • each open-sided grooves in the end face, each serving two cylinders of a four cylinder engine, and each with its own connection to an idle air valve.
  • the open-sided grooves will be appropriately configured to provide the necessary communication with the air passages in the component.
  • the idle air supply ducts may be used for carrying crankcase emissions in addition to idle air, and in this case, the grooves preferably enter the main air passages at positions spaced from the entry into those passages of the fuel injectors, so as to avoid fouling of the injector passages by foreign particles emitted from the crankcase.
  • Opening into the end face 12 are four main air passages 14 each of which provides a straight-through air connection from the intake manifold side to the cylinder head side shown. Opening into each passage 14 is an injector seat 18.
  • a groove 20 Formed in the flat end face 12 is a groove 20 which has a connection 22 for idle air and branches 23, 25, 27 and 29 leading into the respective cylinders.
  • a second groove 30 is also formed in the face 12, and this has a connection 32 for receiving crankcase emissions which are distributed to all four air passages 14 so that these emissions can be burnt in the engine cylinders.
  • each groove 20' there are two grooves 20' each with a connection 22'.
  • the grooves 20' extend to each of the passages 14, and because of the geometry of the arrangement shown, the pair of outermost passages 14 both experience the same idle air flow, as do the pair of innermost passages. By suitably apportioning the idle air reaching the grooves, it can be ensured that all the passages 14 receive the same volume of air.
  • the grooves 20, also carry the crankcase emissions, and it will be noted that their points of entry to the passages 14 are angularly offset relative to the positions of the injector seats 18.
  • the component 10 is to be fitted against a cylinder head 24, with a gasket 26 between the joint faces.
  • the gasket will close the open side of the groove 20 or 20'.
  • the grooves 20, 20' can easily be formed in the diecasting operation used to produce the component. No machining is required as the as-cast surface will be adequate for idle air.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)

Abstract

In order to enhance fuel integrity in the fuel injection system for an internal combustion engine, the fuel injector seats (18) together with the associated fuel feed and return passages are formed in a single block (10) which also includes the air feed passages (14) to the engine cylinders and the idle air passages (20). The idle air passages are formed as open-sided grooves in an end face (12) of the block.

Description

  • This invention relates to a component for a fuel injection system for use with an internal combustion engine, and particularly to a component as described in EP-A-0 261 855.
  • In that earlier specification which belongs to the state of the art according to Article 54(3) EPC, there is disclosed 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.
  • A fuel injection system component is also known from GB-A-2 142 089 which is adapted to be mounted between a cylinder head of an internal combustion engine and an air intake manifold and which has a plurality of main air passages extending through the component, a plurality of fuel injector seats and an end face adapted to interface directly with the engine cylinder head.
  • US-A-4 318 380 also shows a way of providing an idle-air supply duct. This idle-air supply duct extends from am open-sided groove in the end face of a fuel system component of a carburetor engine, said end face interfacing directly with the engine cylinder head. However, the idle air supply duct extends outside of the fuel component in the cylinder head, independently of the air supply route employed when the engine is running at load. The general design of the idle air supply duct is therefore complicated and involves high production costs. The invention proposes a cost effective way of providing an idle air duct in the component that is known from GB-A-2 142 089, whilst avoiding the disadvantages of the proposals known from US-A-4 318 380.
  • According to the present invention there is provided a fuel injection system component adapted to be mounted between an engine cylinder head of an internal combustion engine and an air intake manifold and having a plurality of main air passages extending through the component, a plurality of fuel injector seats, and an end face adapted to interface directly with the engine cylinder head, characterised in that said component comprises at least one main air passage for each cylinder of the engine, fuel feed and return passages communicating with the injector seats, and an idle air supply duct formed as an open-sided groove in said end face providing an idle air supply path from an idle air valve to each main air passage.
  • In one embodiment, a second open-sided groove can be formed in the same end face as the idle air supply duct, to provide ducts for conducting crankcase emissions to the main air passages. Preferably the second open-sided groove opens into the main air passages away from the fuel injector positions, to avoid any possibility of fouling the injectors.
  • When the component is installed, the open sides of the open-sided grooves will be closed by the cylinder head or intake manifold with which the said end face interfaces, so that the supply ducts are completed. Normally, the open sides will be closed by a gasket between the mating faces.
  • To serve the idle air supply function, there may be two independent open-sided grooves in the end face, each serving two cylinders of a four cylinder engine, and each with its own connection to an idle air valve. Where the invention is applied to an engine having a different number of cylinders, the open-sided grooves will be appropriately configured to provide the necessary communication with the air passages in the component.
  • In an alternative embodiment, the idle air supply ducts may be used for carrying crankcase emissions in addition to idle air, and in this case, the grooves preferably enter the main air passages at positions spaced from the entry into those passages of the fuel injectors, so as to avoid fouling of the injector passages by foreign particles emitted from the crankcase.
  • The invention will now be further described, by way of example, with reference to the accompanying drawings, in which:
    • Figure 1 shows a perspective view of one end face of a fuel injection system component in accordance with the invention;
    • Figure 2 is a cross-section through the component of Figure 1, on the line II-II; and
    • Figure 3 is a perspective view of an alternative form of component in accordance with the invention.
  • The drawings show details of only one face of the component 10 (the face which will interface with the cylinder head), and the reader is referred to GB-A-2 195 394 for details of the component.
  • Opening into the end face 12 are four main air passages 14 each of which provides a straight-through air connection from the intake manifold side to the cylinder head side shown. Opening into each passage 14 is an injector seat 18.
  • Formed in the flat end face 12 is a groove 20 which has a connection 22 for idle air and branches 23, 25, 27 and 29 leading into the respective cylinders.
  • A second groove 30 is also formed in the face 12, and this has a connection 32 for receiving crankcase emissions which are distributed to all four air passages 14 so that these emissions can be burnt in the engine cylinders.
  • In an alternative embodiment shown in Figure 3, there are two grooves 20' each with a connection 22'. The grooves 20' extend to each of the passages 14, and because of the geometry of the arrangement shown, the pair of outermost passages 14 both experience the same idle air flow, as do the pair of innermost passages. By suitably apportioning the idle air reaching the grooves, it can be ensured that all the passages 14 receive the same volume of air.
  • In this embodiment, the grooves 20, also carry the crankcase emissions, and it will be noted that their points of entry to the passages 14 are angularly offset relative to the positions of the injector seats 18.
  • In use, the component 10 is to be fitted against a cylinder head 24, with a gasket 26 between the joint faces. As will be apparent from Figure 2, the gasket will close the open side of the groove 20 or 20'.
  • The grooves 20, 20' can easily be formed in the diecasting operation used to produce the component. No machining is required as the as-cast surface will be adequate for idle air.

Claims (3)

  1. A fuel injection system component (10) adapted to be mounted between an engine cylinder head (24) of an internal combustion engine and an air intake manifold and having a plurality of main air passages (14) extending through the component, a plurality of fuel injector seats (18), and an end face (12) adapted to interface directly with the engine cylinder head, characterised in that said component comprises at least one main air passage for each cylinder of the engine, fuel feed and return passages communicating with the injector seats (18), and an idle air supply duct formed as an open-sided groove (20, 20') in said end face providing an idle air supply path from an idle air valve to each main air passage (14).
  2. A component as claimed in Claim 1, characterised in that two independent open-sided grooves (20, 30) are provided in the end face, one forming a duct (20) for idle air and the other forming a duct for crankcase emissions.
  3. A component as claimed in Claim 1 or Claim 2, wherein the grooves (20, 20') enter the main air passages (14) at positions spaced from the entry into those passages of the fuel injectors (18).
EP88902894A 1987-04-03 1988-03-31 Fuel injection system component Expired - Lifetime EP0365529B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB08707978A GB2203487A (en) 1987-04-03 1987-04-03 A fuel injection system component
GB8707978 1987-04-03

Publications (2)

Publication Number Publication Date
EP0365529A1 EP0365529A1 (en) 1990-05-02
EP0365529B1 true EP0365529B1 (en) 1993-11-03

Family

ID=10615168

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88902894A Expired - Lifetime EP0365529B1 (en) 1987-04-03 1988-03-31 Fuel injection system component

Country Status (4)

Country Link
EP (1) EP0365529B1 (en)
DE (1) DE3885458T2 (en)
GB (1) GB2203487A (en)
WO (1) WO1988007627A1 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1211445B (en) * 1987-10-30 1989-10-26 Weber Srl INTEGRATED DEVICE FORMER AND DOSER OF A MIXTURE OF AIR AND FUEL FOR AN INTERNAL COMBUSTION ENGINE POWERED BY A MULTIPOINTS INJECTION SYSTEM
JPH02107758U (en) * 1989-02-14 1990-08-28
DE9410232U1 (en) * 1994-06-27 1995-11-02 Robert Bosch Gmbh, 70469 Stuttgart Fuel injection device for internal combustion engines
US5813375A (en) * 1996-03-11 1998-09-29 Siemenselectric Limited Method and system for distributing vapors or gases to each cylinder of a multicylinder engine
DE19757986A1 (en) * 1997-12-24 1999-07-01 Mann & Hummel Filter Intake device for an internal combustion engine
US6178632B1 (en) * 1999-08-06 2001-01-30 Siemens Canada Limited Method for manufacturing air assist passageways for fuel insector
US6553980B1 (en) * 1999-08-06 2003-04-29 Siemens Canada Limited Center feed of air for air assist fuel injector
DE50209572D1 (en) 2001-07-20 2007-04-12 Mann & Hummel Gmbh Fastening device for an intake manifold

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2142089A (en) * 1983-06-25 1985-01-09 Porsche Ag Fuel injection valve fuel and mounting arrangement for i.c. engines
GB2195394A (en) * 1986-09-17 1988-04-07 Ford Motor Co Fuel injection system component

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1195060A (en) * 1966-10-05 1970-06-17 Vergaser Ges M B H & Co K G De Improvements in Induction Systems for Internal Combustion Engines.
GB2032521B (en) * 1978-10-09 1982-11-24 Nissan Motor Fuel feeding device for an internal combustion engine
JPS5554628A (en) * 1978-10-17 1980-04-22 Yamaha Motor Co Ltd Intake apparatus for multi-cylinder internal combustion engine
DE3217251A1 (en) * 1982-05-07 1983-11-10 Bayerische Motoren Werke AG, 8000 München INTAKE SYSTEM FOR MIXTURING COMPRESSIVE, IGNITION MULTI-CYLINDER INTERNAL COMBUSTION ENGINES
GB2165886A (en) * 1984-10-23 1986-04-23 Ford Motor Co An inlet manifold for an i c engine
US4660530A (en) * 1985-03-04 1987-04-28 Yamaha Hatsudoki Kabushiki Kaisha Intake system for internal combustion engine
JPH0350283Y2 (en) * 1985-04-09 1991-10-28
US4756289A (en) * 1986-02-12 1988-07-12 General Motors Corporation Self-contained fuel pressure regulator

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2142089A (en) * 1983-06-25 1985-01-09 Porsche Ag Fuel injection valve fuel and mounting arrangement for i.c. engines
GB2195394A (en) * 1986-09-17 1988-04-07 Ford Motor Co Fuel injection system component

Also Published As

Publication number Publication date
WO1988007627A1 (en) 1988-10-06
DE3885458D1 (en) 1993-12-09
GB8707978D0 (en) 1987-05-07
GB2203487A (en) 1988-10-19
EP0365529A1 (en) 1990-05-02
DE3885458T2 (en) 1994-06-16

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