Method of controlling the operation of an i. c. engine

Details Method of controlling the operation of an i. c. engine Method of controlling the operation of an i. c. engine

1992-09-10

1993-11-23

Dolinar, Andrew M.

Internal-combustion engines

Combustion chamber means combined with air-fuel mixture...

123435, 324399, F02D 4302

Patent

active

052634515

ABSTRACT:
In a method of controlling the point of ignition and/or air-fuel mixture of an i. c. engine, a signal circuit is used for emitting a signal indicating abnormal combustion or disturbance, and the first derivative of the spark current is used for the detection. According to the invention, the average peak value of the first derivative of the spark current is a reference value of the detection, and the actual signal of the derivative of the spark current is compared via a voltage divider and a comparator circuit with said average peak value, whereby detection is obtained when the signal from the voltage divider exceeds said average peak value.

REFERENCES:
patent: 4117807 (1978-10-01), Barnard
patent: 4417556 (1983-11-01), Latsch
patent: 5143042 (1992-09-01), Scheid

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