Internal-combustion engines – Intake manifold – Manifold tuning – balancing or pressure regulating means
Patent
1975-03-27
1976-12-21
Myhre, Charles J.
Internal-combustion engines
Intake manifold
Manifold tuning, balancing or pressure regulating means
123108, 180105E, 317 5, F02D 1110
Patent
active
039981916
ABSTRACT:
A system for limiting the speed of a gasoline engine includes a circuit responsive to the engine speed which provides control signals to a solenoid valve which in turn controls a vacuum actuator. The vacuum actuator then overrides a manual throttle control to move the throttle towards closed position when a governed engine speed is approached. The control circuit provides a signal having three components: one proportional to engine speed, a second proportional to engine acceleration and a third which is the integrated difference between the engine speed and a preset governed speed. In addition, the third signal is high at low engine speed and gradually diminishes as engine speed increases to intermediate or high values. The control signal controls a duty cycle oscillator which actuates the solenoid valve. The duty cycle oscillator is inhibited at low speeds to prevent interference with manual throttle control.
REFERENCES:
patent: 3533236 (1970-10-01), Cottington
patent: 3715006 (1973-02-01), Walsh et al.
patent: 3724433 (1973-04-01), Voss et al.
patent: 3738340 (1973-06-01), Olsm
patent: 3752249 (1973-08-01), Gelenius et al.
patent: 3885137 (1975-05-01), Ooya et al.
patent: 3949359 (1976-04-01), Sorkin
Beyerlein David G.
Kibler Roland G.
Van Vlack Bruce H.
Devinsky Paul
General Motors Corporation
Hill Warren D.
Myhre Charles J.
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