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US 4,231,344 AGranted
Air induction systems for diesel engines
AssigneeCentro Ricerche Fiat S.p.A.
InventorsMario Urbinati, Luigi Conti
Life of this patent
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Abstract
An air induction system which reduces the fuel odor and noise of a diesel engine includes two acoustically insulating baffle elements which cover a fuel pump, fuel pipes and fuel injectors and cause the air inducted by the engine to pass through an air filter interposed between the baffle elements, thereby inducting the fumes from the fuel system along respective pipes which extend across the top of the engine into respective cylinder air induction ducts.
Claims5
In an internal combustion engine having compression ignition and comprising:
- at least one cylinder,
- at least one fuel injector, said at least one cylinder having a respective said fuel injector,
- at least one air induction duct defined by a respective said at least one cylinder,
- a fuel pump located adjacent said engine, and
- at least one fuel pipe connecting said fuel pump with a respective said fuel injector, an air induction system comprising:
- baffle means fixed to said engine to cover said fuel pump, said fuel injectors and said associated fuel pipes, whereby the air inducted by said engine is caused to flow over said components, said baffle means defining an internal space,
- an air filter located in said internal space upstream of said fuel injectors and said fuel pipes, whereby the air inducted by said engine passes through said filter prior to passing over said fuel injectors and said fuel pipes, and
- at least one pipe for conducting filtered air from said space into the air induction duct of a respective said cylinder, said at least one pipe being located above said engine.
5 more elements
Dependencies are inferred from the claim text.