Method of feedback-controlling idling speed of internal combusti

Details Method of feedback-controlling idling speed of internal combusti Method of feedback-controlling idling speed of internal combusti

1985-01-17

1986-12-30

Shoop, Jr., William M.

Prime-mover dynamo plants

Electric control

Engine control

290 40A, 290 40B, 290 40C, 290 40D, 123339, F11D 1510, F02D 902

Patent

active

046330933

ABSTRACT:
An idling speed feedback control method for use with an internal combustion engine having electrical load equipment and a generator for supplying electric power to the electrical load equipment, the generator being driving by the engine. The idling speed feedback control amount is effected as a function of the difference between an actual engine speed and a target idling speed. The method comprises the steps of detecting a generating state signal as a function of the field coil current of the generator which represents the generating state of the generator; detecting the actual engine speed; determining an electrical load correction value during a time period starting at or before the time when the electrical load correction value changes and ending at the time at or after the electrical load correction value changes. The electrical load correction value is then modified in accordance with the magnitude of the change and the idling speed feedback control is corrected as a function of the modified electrical load correction value.

REFERENCES:
patent: 4406262 (1983-09-01), Ikeura
patent: 4529887 (1985-07-01), Johnson
patent: 4553516 (1985-11-01), Hasegawa
patent: 4562808 (1986-01-01), Tominaga et al.
patent: 4570592 (1986-02-01), Otobe
patent: 4572141 (1986-02-01), Hasegawa et al.

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