Fuel supply system with fuel evaporation prevention

Details Fuel supply system with fuel evaporation prevention Fuel supply system with fuel evaporation prevention

1996-09-30

2000-05-30

Moulis, Thomas N.

Internal-combustion engines

Charge forming device

Fuel injection system

123497, 137517, F02M 4100, F16K 1500

Patent

active

060679638

ABSTRACT:
When differential pressure between fuel flowing into a fuel control valve and fuel flowing out of the valve reaches a predetermined value, the biasing force of a compressed coil spring is countered and a shaft in the valve moves to the fuel upstream side so that a valve member is seated to terminate communication between the fuel inlet passage and the fuel outlet passage. This maintains fuel pressure at the fuel inlet passage and at the fuel outlet passage at different levels so that the fuel supply system maintains a high fuel pressure in the fuel rail to suppress fuel vapor generation during engine stoppage while also yet still providing an appropriate fuel injection pressure during rapid deceleration of the vehicle.

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