Electronic fuel injection control

Details Electronic fuel injection control Electronic fuel injection control

1977-05-26

1979-01-16

Myhre, Charles J.

Internal-combustion engines

Noncompression

123117R, F02B 300, F02P 514

Patent

active

041343670

ABSTRACT:
Engine fuel injector control circuitry comprising a pulse generator that duces long duration pulses. NOR gate circuitry is actuated by each pulse to operate a ramp generator. The ramp generator output changes at a rate determined by current flow generated by an engine speed sensor. Ramp generator output is applied to an input terminal of a comparator to produce rapid switching of the comparator output for starting the injection of fuel into an engine cylinder. Injection is terminated by the trailing end of the long duration pulse.

REFERENCES:
patent: 3430616 (1969-03-01), Glockler et al.
patent: 3809029 (1974-05-01), Wakamatsu et al.
patent: 3835820 (1974-09-01), Fujisawa
patent: 3885720 (1975-05-01), Brennan
patent: 3890938 (1975-06-01), Oishi et al.
patent: 3914580 (1975-10-01), Watson et al.
patent: 3945350 (1976-03-01), Ford
patent: 4047507 (1977-09-01), Noguchi et al.

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