Fuel injection control system

Details Fuel injection control system Fuel injection control system

1998-12-17

2000-10-24

Moulis, Thomas N.

Internal-combustion engines

Charge forming device

Fuel injection system

123506, F02M 3704

Patent

active

061350907

ABSTRACT:
A fuel injection control system for an internal combustion engine comprises a plurality of fuel injector valves, a pumping system having a suction valve, a discharge valve, and a high-pressure pump section sucking fuel into a pressurized chamber with the suction valve opened on a suction stroke and for discharging the fuel in the pressurized chamber toward the injector valves with the discharge valve opened on a discharge stroke. A relief passage is connected, at one end, to a lowpressure line upstream of the suction valve. The other end of the relief passage is connected to the pressurized chamber. A fuel-pressure control valve is disposed in the relief passage for regulating a fuel pressure of the fuel injected from each of the fuel injector valves by opening the fuel-pressure control valve only for a specified time duration from a controllable middle stage of the discharge stroke to the end of the discharge stroke.

REFERENCES:
patent: 5343845 (1994-09-01), Fehlmann
patent: 5478213 (1995-12-01), Harris et al.
patent: 5529042 (1996-06-01), Augustin et al.
patent: 5577892 (1996-11-01), Schittler et al.
patent: 5911208 (1999-06-01), Furusawa et al.

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