Method for controlling timing of spark ignition for an internal

Details Method for controlling timing of spark ignition for an internal Method for controlling timing of spark ignition for an internal

1978-12-14

1981-05-19

Gruber, Felix D.

Boots, shoes, and leggings

123416, 123425, 364508, F02P 514, F02P 1700

Patent

active

042689104

ABSTRACT:
The timing of spark ignition is set in normal operating conditions at a programed spark advance angle corresponding to the MBT (minimum spark advance for best torque). When knocking of the engine is detected by a vibration sensor, the ignition timing is delayed by a predetermined amount, e.g., 2.DELTA..theta., for each engine cycle that knocking is detected in synchronism with the rotation of the engine. When knocking is not detected, the ignition timing is advanced by another predetermined amount, for each engine cycle that knocking is not detected. e.g., .DELTA..theta.. In this method for controlling the spark timing, the amount of retardation, 2.DELTA..theta., is selected to be larger than the other amount of advance, .DELTA..theta..

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