Idle operation control for internal combustion engines

Details Idle operation control for internal combustion engines Idle operation control for internal combustion engines

1983-11-18

1985-04-09

Cox, Ronald B.

Internal-combustion engines

Engine speed regulator

Idle speed control

123436, 123419, 123417, F02P 504, F02B 300

Patent

active

045094772

ABSTRACT:
Idling speed of the internal combustion engine is controlled to a predetermined engine speed by correcting an engine operating parameter, such as, an ignition timing, the quantity of fuel injection, etc., to suppress a variation rate of the engine torque. Instead of detecting the torque variation rate directly, an engine speed variation rate is detected, and a correction value of the engine parameter is determined as a function of the engine speed variation rate based on the finding that the torque variation rate can be approximated as the engine speed variation rate with a fixed phase difference therebetween. Since the phase difference is determined by the engine speed, a correction value at the present moment is obtained from the previously obtained correction value which is preceding by the phase difference.

REFERENCES:
patent: 4357662 (1982-11-01), Schira
patent: 4365601 (1982-12-01), Yamazoe
patent: 4375668 (1983-03-01), Leung
patent: 4418669 (1983-12-01), Johnson

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