Fuel injection system having fuel injector calibration

Details Fuel injection system having fuel injector calibration Fuel injection system having fuel injector calibration

1982-01-28

1983-09-06

Cox, Ronald B.

Internal-combustion engines

Charge forming device

Fuel injection system

123494, 123486, 123478, 73119A, F02B 300, F02B 3300

Patent

active

044022948

ABSTRACT:
A fuel injection system for a motor vehicle internal combustion engine includes a controller that energizes an electromagnetic fuel injector for time durations determined to provide the fuel requirements of the engine. The fuel injection system is calibrated to the actual fuel flow rate of the injector by a calibration resistor provided with the injector assembly having a resistance related to the actual fuel flow rate of the injector. The controller samples the resistance of the calibration resistor and retrieves a number related to the actual fuel flow rate of the injector from a lookup table in a memory containing fuel flow rate information at locations addressed by resistance values. The retrieved fuel flow rate information is then utilized to determine the time duration required to energize the injector to obtain the required amount of fuel.

REFERENCES:
patent: 3575145 (1971-04-01), Steiger
patent: 3587547 (1971-06-01), Hussey
patent: 3835819 (1974-09-01), Anderson
patent: 4366541 (1982-12-01), Mouri

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