Method of and apparatus for controlling engine revolution speed

Details Method of and apparatus for controlling engine revolution speed Method of and apparatus for controlling engine revolution speed

1988-08-22

1989-11-14

Wolfe, Willis R.

Internal-combustion engines

Engine speed regulator

Idle speed control

123588, F02D 4108

Patent

active

048799823

ABSTRACT:
A method of and an apparatus for controlling the revolution speed of an engine, suitable for use in an automobile having an automatic transmission. Flow rate of auxiliary intake air by-passing a throttle valve is controlled by an auxiliary air control valve, the opening period of which is incremented in response to a signal which represents the state of the automatic transmission shifted from neutral range to a power range so as to avoid any reduction in the engine speed or the engine stall. The valve open time is controlled as a function of the engine cooling water temperature.

REFERENCES:
patent: 4392468 (1983-07-01), Kobashi et al.
patent: 4484553 (1984-11-01), Kobayashi et al.
patent: 4513710 (1985-04-01), Kobayashi et al.
patent: 4617890 (1986-10-01), Kobayashi et al.
patent: 4721083 (1988-01-01), Hosaka
patent: 4760823 (1988-08-01), Yasuoka et al.
patent: 4787044 (1988-11-01), Nagata et al.

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