Fuel injector and its control method

Details Fuel injector and its control method Fuel injector and its control method

2006-08-22

2006-08-22

Sircus, Brian (Department: 2836)

Electricity: electrical systems and devices

Control circuits for electromagnetic devices

Systems for magnetizing, demagnetizing, or controlling the...

C361S139000

Reexamination Certificate

active

07095599

ABSTRACT:
When voltage changes occur in the battery used as a power supply in a fuel injection system, the amount of fuel injection also changes and the required amount of fuel injected cannot be obtained. To eliminate this problem, a fuel injector system is provided which has a fuel injection valve with at least one coil, a power supply, a power supply voltage detector, and a control unit for controlling the fuel injection valve. The control unit sets a reference value of a power supply voltages, and the above-mentioned fuel injection valve is controlled so as to obtain the required ampere-turns by reducing the resultant inductance of the coil when a power supply voltage detection value is less than the above-mentioned reference value, and the resultant inductance of the coil is increased when the power voltage detection value is greater than the reference value.

REFERENCES:
patent: 5293076 (1994-03-01), Fukui
patent: 6120005 (2000-09-01), Wright
patent: 2002/0166541 (2002-11-01), Yamakado et al.
patent: 0 6193 756 (1996-01-01), None
patent: 8-45735 (1996-02-01), None
patent: WO 00/14395 (2000-03-01), None

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