Engine speed control system

Details Engine speed control system Engine speed control system

1981-12-17

1984-06-12

Lall, Parshotam S.

Internal-combustion engines

Engine speed regulator

Having condition responsive means with engine being part of...

123339, F02D 1110, B60K 3100

Patent

active

044535180

ABSTRACT:
An engine idling speed control system for an internal combustion engine comprising an actuator for actuating a throttle valve for increasing and decreasing the idling speed, an engine speed signal generating circuit, an engine speed increasing signal generating circuit and an engine speed decreasing signal generating circuit, a vehicle speed signal generating circuit, an idling signal generating circuit for generating an idling signal in the idling operation of the engine, and an actuator control circuit for operating the actuator in opposite directions in accordance with engine speed increasing and decreasing signals. A time lag signal generating circuit is provided to be responsive to the engine speed signal and to the idling signal for producing a time lag signal. The time lag signal generating circuit is so arranged that duration of the time lag signal increases with the increase of the engine speed. A logic gate means is provided to be operated by the vehicle speed signal, idling signal and time lag signal for enabling the engine speed increasing and decreasing signals after the duration of the time lag signal.

REFERENCES:
patent: 3969614 (1976-07-01), Moyer et al.
patent: 4112885 (1978-09-01), Iwata et al.
patent: 4163282 (1979-07-01), Yamada et al.
patent: 4344399 (1982-08-01), Matsumura et al.

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