Electromagnetic fuel injector and control method thereof

Details Electromagnetic fuel injector and control method thereof Electromagnetic fuel injector and control method thereof

1999-11-09

2000-10-10

Argenbright, Tony M.

Internal-combustion engines

Charge forming device

Fuel injection system

25112903, 2511291, 361147, 361166, H01F 718

Patent

active

061290734

ABSTRACT:
In an electromagnetic fuel injection valve for injecting fuel by opening/closing a fuel flowing path, including a valve seat, a valve element for opening/closing the fuel flowing path formed between the valve seat and the valve element, and a drive unit having at least one coil, for driving the valve element. The drive unit includes a first magnetomotive force generating device using the at least one coil and a second magnetomotive force generating device, the first magnetomotive force generating device and the second magnetomotive force generating device being composed so that the first magnetomotive force generating device generates and raises magnetomotive force at a larger rate of change in time in comparison with the second magnetomotive force generating device. A valve opening hold state is held by the second magnetomotive force generating device which uses a smaller current flow in comparison with the first magnetomotive force generating device.

REFERENCES:
patent: 3576473 (1971-04-01), Genbauffe et al.
patent: 3665898 (1972-05-01), Kamazuka
patent: 4078528 (1978-03-01), Hoshi
patent: 4154198 (1979-05-01), Hoshi

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