Control apparatus of rotational speed of engine

Details Control apparatus of rotational speed of engine Control apparatus of rotational speed of engine

1991-11-22

1992-10-06

Williams, Howard L.

Prime-mover dynamo plants

Electric control

Engine control

290 40A, 290 40R, 123339, F02D 902, F02D 1110, F02A 3045

Patent

active

051534460

ABSTRACT:
A control apparatus of a rotational speed of an engine outputs a drive signal for adjusting the opening of a control valve which controls a specific volume of intake air of the engine to control the engine speed. The drive signal is based on the sum of a basic control amount and a correction amount. The correction amount is varied such that an actual speed of the engine and a target speed tend to become equal during the idling condition. When the engine goes to the idling condition from the loaded condition, the drive signal is added to a predetermined value to provide a much larger value of the drive signal than in the normal idling condition, and is then progressively decreased until the sum becomes equal to said first control amount. Thus, the engine can be operated without too large a drop in engine speed.

REFERENCES:
patent: 3981287 (1976-09-01), Williams et al.
patent: 4307690 (1981-12-01), Rau et al.
patent: 4520272 (1985-05-01), Danno et al.
patent: 4611560 (1986-09-01), Miyazaki et al.
patent: 4633093 (1986-12-01), Otobe et al.
patent: 4649878 (1987-03-01), Otobe et al.

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