Fuel mixture enrichment system for internal combustion engine

Details Fuel mixture enrichment system for internal combustion engine Fuel mixture enrichment system for internal combustion engine

F - Mech Eng,Light,Heat,Weapons

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F02M 1/16 (2006.01) F02B 63/02 (2006.01) F02B 75/16 (2006.01) F02M 17/04 (2006.01) F02B 75/02 (2006.01)

Patent

CA 1203729

ABSTRACT OF THE DISCLOSURE A fuel priming system for spark ignited internal combustion engines includes a manually actuated plunger pump for delivering liquid fuel from a tank to a reservoir chamber formed in part by a flexible diaphragm. A fuel injection passage leads from the reservoir chamber through a flow restricting orifice to an injection point formed in the engine intake air flow passage downstream of the carburetor venturi. The injection system provides for enriching the fuel-air mixture during cold starting while minimizing the chance of engine flooding. The finite fuel volume in the reservoir chamber also provides a sufficient quantity of fuel for automatic control of a rich fuel-air mixture during engine warm-up.

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