Method and circuit arrangement for controlling an injection valv

Details Method and circuit arrangement for controlling an injection valv Method and circuit arrangement for controlling an injection valv

1987-04-28

1988-09-13

Wolfe, Willis R.

Internal-combustion engines

Charge forming device

Fuel injection system

361154, F02D 4120, H01H 4732

Patent

active

047701781

ABSTRACT:
In a method for controlling an injection valve for an internal combustion engine in which the magnet coil of the injection valve is connected to pulsate current by means of a semiconductor switch to an operating voltage in such a way that, during a first time interval, a current which is sufficient to open the injection valve flows and that, following same, there is possibly a second time interval which is dependent on the intended injection time and has a current sufficient for holding the valve open. The first time interval is terminated by disconnection when the current has reached a peak valve which is dependent in accordance with a predetermined function on the operating voltage.

REFERENCES:
patent: 4148090 (1979-04-01), Kawai et al.
patent: 4266261 (1981-05-01), Streit et al.
patent: 4327394 (1982-04-01), Harper
patent: 4347544 (1982-08-01), Ohba
patent: 4452210 (1984-06-01), Sasayama et al.
patent: 4511945 (1985-04-01), Nielsen
patent: 4605983 (1986-08-01), Harvey

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