System for regulating the engine speed

Details System for regulating the engine speed System for regulating the engine speed

1981-03-05

1983-05-17

Lall, Parshotam S.

Internal-combustion engines

Engine speed regulator

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

123361, 180179, F02B 300

Patent

active

043835104

ABSTRACT:
A system for regulating the engine speed of an internal combustion engine having a carburetor and a throttle valve in the carburetor. The system comprises an electro-mechanical actuator having an electric motor and a push rod engaged with a throttle lever for maintaining the throttle valve to an open state, a speed sensor for detecting the speed of the engine, and an electronic control circuit. A detecting means is provided for producing a pulse train according to the number of the rotations of the electric motor. The electronic control circuit comprises a comparing circuit connected to the speed sensor, a level setting circuit for applying a standard level to the comparing circuit for comparing the output of the speed sensor with the standard level, a counter for counting the output of the detecting means, and a control circuit for producing a pair of output signals in dependency on the outputs of the comparing circuit and of the counter. Output signals of the control circuit are applied to a driving circuit for driving the electric motor for projecting or retracting the push rod, so that the throttle valve is opened or closed in dependency on the output signals of the speed sensor for controlling the engine speed to the standard level.

REFERENCES:
patent: 3476205 (1969-11-01), Kato
patent: 3575256 (1971-04-01), Jania et al.
patent: 3580355 (1971-05-01), Kitano et al.
patent: 3648808 (1972-03-01), Kato
patent: 3804193 (1974-04-01), Ikuta
patent: 4047507 (1977-09-01), Noguchi et al.

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