Internal-combustion engines – Engine speed regulator – Idle speed control
Patent
1980-11-12
1983-01-18
Lall, P. S.
Internal-combustion engines
Engine speed regulator
Idle speed control
123588, B60K 3100
Patent
active
043687040
ABSTRACT:
A fast idle device for a carburetor is disclosed such that an optimum throttle valve opening (idle opening) is calculated through a calculating circuit based on various engine operating conditions, after the engine is started, and is controlled repeatedly, until the engine is fully warmed up, in such a way that the throttle valve movement urged by a return spring in the direction to close the valve is released steppedly by a ratchet mechanism. The fast idle device of the present invention comprises various sensors, a calculating circuit, and an electromagnetic ratchet mechanism, in addition to a conventional throttle valve.
REFERENCES:
patent: 1551385 (1925-08-01), Gordon
patent: 1991079 (1935-02-01), Brown
patent: 2269704 (1942-01-01), Berry
patent: 2906253 (1959-09-01), Nallinger
patent: 2929369 (1960-03-01), Staege
patent: 4046118 (1977-06-01), Aono
patent: 4057042 (1977-08-01), Aono
patent: 4153024 (1979-05-01), Bertling
patent: 4237833 (1980-12-01), Des Lauries
patent: 4305360 (1981-12-01), Meyer et al.
Lall P. S.
Nissan Motor Company Limited
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