Engine revolution control apparatus for vehicle

Details Engine revolution control apparatus for vehicle Engine revolution control apparatus for vehicle

1990-07-12

1991-07-30

Argenbright, Tony M.

Internal-combustion engines

Engine speed regulator

Idle speed control

F02D 4116

Patent

active

050352156

ABSTRACT:
An engine revolution control apparatus for a vehicle, in which revolutions of an engine when the engine is in the idling state, e.g., when the vehicle is being stopped and a throttle valve is totally closed, is controlled by controlling the opening of an air control valve which is provided in a by-pass conduit for by-passing the throttle valve according to a revolution feedback correction volume. The revolution feedback correction volume is calculated according to the deviation between the actual revolutions of the engine and its target revolutions which was set according to the load of the engine, increasing, in the non-idling state of the engine, the revolution feedback correction volume, which is calculated when the engine has shifted from the idling state to the non-idling state as well as when the deviation between the actual revolutions and the target revolutions is small. Thus, when the engine is shifted to the idling state again, the engine is not affected by an undetected current consumer such as an ON signal of a headlight which was injected when the engine was in the non-idling state. As a result the actual revolutions can smoothly be converged with the target revolutions with better responsiveness.

REFERENCES:
patent: 4549512 (1985-10-01), Takao et al.
patent: 4825829 (1989-05-01), Abe

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