Fuel rail pressure control

Details Fuel rail pressure control Fuel rail pressure control

1995-11-20

1997-02-25

Moulis, Thomas N.

Internal-combustion engines

Charge forming device

Fuel injection system

123464, 123511, F02M 3704, F02M 4100

Patent

active

056051336

ABSTRACT:
A no-return fuel system with a pressure regulator controlling the pressure of fuel supplied by a pump to the fuel rail and injectors of an internal combustion engine. The regulator has a bypass valve movable to open and closed positions by a diaphragm assembly to regulate the pressure of fuel supplied to the engine. The diaphragm is responsive to the pressure of fuel in a sensor line connected to the supply of fuel to the engine downstream of the bypass valve. To increase the pressure of fuel supplied to the engine when the pump is operating under an engine hot soak temperature conditions, a bleed passage communicating with the sensor line is opened by a solenoid actuated valve energized by a temperature responsive switch adjacent the engine.

REFERENCES:
patent: 4635606 (1987-01-01), Koike et al.
patent: 4829964 (1989-03-01), Asayama
patent: 5133323 (1992-07-01), Treusch
patent: 5265644 (1993-11-01), Tuckey
patent: 5289810 (1994-03-01), Bauer et al.
patent: 5381816 (1995-01-01), Alsobrooks et al.
patent: 5398655 (1995-03-01), Tuckey
patent: 5458104 (1995-10-01), Tuckey

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