System and method for controlling engine revolutions for vehicul

Details System and method for controlling engine revolutions for vehicul System and method for controlling engine revolutions for vehicul

1990-01-26

1991-09-17

Argenbright, Tony M.

Internal-combustion engines

Engine speed regulator

Idle speed control

F02M 309, F02D 4116

Patent

active

050484834

ABSTRACT:
A system and method for controlling an engine revolution speed are disclosed in which upon a reduction in coolant temperature, a control signal is supplied to an idling control valve having a duty ratio reducing the duty ratio corresponding to the opening angle of the idling control valve when an engine coolant temperature is below a predetermined value so that during an engine deceleration in which an air regulator is open, an increase in a boost pressure is prevented and no reduction of the engine revolution speed occurs or engine revolution speed during the idling does not become excessively high.

REFERENCES:
patent: 4385603 (1983-05-01), Bonse et al.
patent: 4545349 (1985-10-01), Ito et al.
patent: 4771749 (1988-09-01), Kiuchi et al.
patent: 4856475 (1989-08-01), Shimomura

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