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US 5,957,112 AGranted
Injector arrangement for engine
AssigneeSanshin Kogyo Kabushiki Kaisha
InventorsMasanori Takahashi, Hitoshi Watanabe
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AssigneeSanshin Kogyo Kabushiki Kaisha
InventorsMasanori Takahashi, Hitoshi Watanabe
Estimating the term…
A fuel injector arrangement for an internal combustion engine of the type utilized to power an outboard motor of a watercraft is disclosed. The engine is oriented with its crankshaft vertically extending, such that the engine has a top and a bottom, a first end and a second end, and a side between the ends. An intake passage leads through a side of the engine to a combustion chamber therein. A fuel injector is positioned along the side of the engine and arranged to deliver fuel into air flowing through the passage. In one arrangement, the fuel injector is connected to an intake manifold connected to the side of the engine and having a passage therethrough leading to the intake passage. In this arrangement, a fuel delivery passage is formed in the manifold through which fuel is delivered to the injector. In a second embodiment, the fuel injector is connected to a cylinder head of the engine and the fuel delivery passage is formed in the cylinder head.
A fuel injector arrangement for an internal combustion engine of the type utilized to power an outboard motor of a watercraft, the engine having a vertically extending crankshaft, at least one combustion chamber formed in part by a cylinder bore, a first end and a second end and a side extending therebetween, an intake passage extending through a side of said engine to said combustion chamber, said intake passage having a first, generally straight portion extending from an intake port communicating directly with said combustion chamber in a direction having a flow axis disposed at an acute angle to said engine side and to the axis of said cylinder bore and merging into a second, generally straight portion having a flow axis extending generally perpendicularly to said engine side and to said axis of said cylinder bore, said fuel injection system comprising a fuel injector positioned along said side of said engine and arranged to deliver fuel to air flowing through said second intake passage portion in a direction generally parallel to the flow axis of said first portion.
A fuel injector arrangement for an internal combustion engine of the type utilized to power an outboard motor of a watercraft, the engine having a vertically extending crankshaft, at least one combustion chamber formed in part by a cylinder head and a cylinder block in which at least one cylinder bore is formed, a first end and a second end and a side therebetween, an intake passage extending through a side of said engine to said combustion chamber, said intake passage being formed in part by a cylinder head and an intake manifold, said cylinder head, said cylinder block and said intake manifold forming an engine body, said fuel injection system comprising a fuel injector positioned along said side of said engine and arranged to deliver fuel to air flowing through said intake passage, and a fuel delivery passage through which fuel is supplied directly to said fuel injector, said fuel delivering passage being integrally formed in said engine body.
Dependencies are inferred from the claim text.