Idle circuit shut-off valve

Details Idle circuit shut-off valve Idle circuit shut-off valve

1980-10-23

1982-09-07

Cuchlinski, Jr., William A.

Internal-combustion engines

Engine speed regulator

Responsive to deceleration mode

123333, 123198DB, 123DIG11, 261DIG19, F02M 712

Patent

active

043478174

ABSTRACT:
A method and apparatus for shutting off liquid flow such as fuel in a carburetor during certain sensed conditions, in which an adjustment is provided for further controlling the liquid at times when the liquid is not shut off. When used on a carburetor, idle fuel or injection water is shut off by a needle valve. The needle valve may be retracted to an "on" position. The "on" position is adjustable so as to provide a flow adjustment. Such an arrangement may be provided as an original design feature of a carburetor or may be added to existing carburetor designs, for example, as a kit.
When used as an idle fuel shut-off, the needle valve is adjusted in the "on" position in a manner similar to conventional idle mixture adjustment using idle mixture adjusting screws. Thus, fuel in the idle circuit may be interrupted during engine deceleration, as detected by a high manifold vacuum condition, or during engine shut-off, as detected by an interruption in the engine's ignition circuit.

REFERENCES:
patent: 2359925 (1944-10-01), Leibing
patent: 3080858 (1963-03-01), Kane, Jr.
patent: 3996908 (1976-12-01), Brown et al.
patent: 3996909 (1976-12-01), Fisher

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