Injection system for a valve of a diesel engine

Details Injection system for a valve of a diesel engine Injection system for a valve of a diesel engine

1985-04-17

1988-07-19

Miller, Carl Stuart

Internal-combustion engines

Charge forming device

With fuel pump

123501, 123447, 417494, F02M 3900

Patent

active

047577940

ABSTRACT:
The valve needle of the injection valve is actuated by a control pressure created by a hydraulic injection system. The control pressure is created by a piston pump and is supplied via a control line to the injection valve. At the beginning of the stroke, a bypass flow path is open with a cross section which decreases continuously with progressing piston stroke. With the aid of the pressure medium volume flowing out through the bypass flow path and decreasing in the course of the stroke, a control pressure which is free from pressure waves and their reflections in the control line and which continuously approaches a desired value is created and supplied through the control line to the valve needle without pressure fluctuations causing an oscillating opening and closing of the needle.

REFERENCES:
patent: 1966694 (1934-07-01), Vaudet
patent: 2195946 (1940-04-01), Occusic
patent: 2474396 (1949-06-01), Groves
patent: 3930482 (1976-01-01), Akashi
patent: 4064855 (1977-12-01), Johnson

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