Fuel injection control system

Details Fuel injection control system Fuel injection control system

1976-08-04

1978-06-13

Cox, Ronald B.

Internal-combustion engines

Noncompression

123198DB, 123 97B, F02B 300

Patent

active

040942740

ABSTRACT:
A control circuit for a fuel injection system used with internal combustion engines, of the type in which fuel injection valve control pulses are generated whose duration depends on engine data, in particular engine rpm and air flow rate. To avoid misfires when the engine is run fast with a closed throttle, the fuel supply is shut off by suppression of the fuel control pulses. For this purpose, the control circuit generates a reference rpm value and a reference pulse train of predetermined pulse duration and compares the duration of the actual fuel injection control pulses with the predetermined duration and, at the same time, it compares the actual rpm with the reference rpm. If the actual pulse duration is less than the reference duration and if the actual rpm is greater than the reference rpm, the control circuit suppresses the fuel injection control pulses.

REFERENCES:
patent: 3601103 (1971-08-01), Swiden
patent: 3916865 (1975-11-01), Klencke

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