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 and claimed in our pending UK Patent Application 8622425.
• 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 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 main air passages extend from said one side to said another side, the block including at least one main air passage for each cylinder of the engine, a plurality of fuel injector seats, fuel feed and return passages communicating with the injector seats, and an idle air supply duct formed as an open-sided groove in an end face adapted to interface with either the
• SUBSTITUTESHEET engine cylinder head or an air intake manifold the supply duct 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.
• the grooves are in the end face which interfaces with the cylinder head.
• 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.
• 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;
• Figure 3 is a perspective view of an alternative form of component in accordance with the invention.
• 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.
• SUBSTITUTE SHEET In an alternative embodiment shown in Figure 3, there are two grooves 20, each with a connection 22.
• the grooves 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 to the pair of innermost passages. By suitably apportioning the idle air reaching the grooves, it can be ensured that all the passges 14 receive the same volume of air.
• the grrove ⁇ 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.
• the grooves 20 can easily be formed in the die-casting 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)

Priority Applications (1)

Applications Claiming Priority (2)

Publications (1)

Family

ID=10615168

Family Applications (1)

Country Status (4)

Families Citing this family (8)

Citations (9)

Family Cites Families (1)

• 1987
  • 1987-04-03 GB GB08707978A patent/GB2203487A/en not_active Withdrawn
• 1988
  • 1988-03-31 WO PCT/GB1988/000248 patent/WO1988007627A1/en active IP Right Grant
  • 1988-03-31 EP EP88902894A patent/EP0365529B1/de not_active Expired - Lifetime
  • 1988-03-31 DE DE3885458T patent/DE3885458T2/de not_active Expired - Lifetime

Patent Citations (9)

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