Fuel injection system for internal combustion engines

Details Fuel injection system for internal combustion engines Fuel injection system for internal combustion engines

F - Mech Eng,Light,Heat,Weapons

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F02M 59/02 (2006.01) F02D 41/20 (2006.01)

Patent

CA 1047862

ABSTRACT OF THE DISCLOSURE A high pressure gas-driven fuel pump is disclosed for use in a fuel injection system for an internal combustion engine. The upper end of the pump includes a chamber containing an annular seat spring-biased down- wardly against the top end of an annular piston fitted to a lower, coaxial chamber. A second piston fits into the annular piston and is itself spring- biased downwardly into the lower chamber. Below the lower chamber is a fuel chamber fitted with an upwardly biased plunger, engaging the bottom of the second piston. The pump is operated by the supply of gas to the lower chamber in a cyclic manner, or from the combustion chamber of an internal combustion engine. The application also discloses a system employing the pump.

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