Device for preventing an internal combustion engine from revolvi

Details Device for preventing an internal combustion engine from revolvi Device for preventing an internal combustion engine from revolvi

1974-06-13

1976-07-06

Myhre, Charles J.

Internal-combustion engines

Intake manifold

Manifold tuning, balancing or pressure regulating means

123102, F02P 100

Patent

active

039676048

ABSTRACT:
In an ignition system for an internal combustion engine comprising a power source, an ignition coil including a primary coil portion and a secondary coil portion with said primary coil portion supplied with a primary current from said power source and switching means to break said primary current in time with revolution of the engine whereby a high voltage is induced across said secondary coil portion of said ignition coil, a device for preventing the engine from revolving at more than the predetermined speed including a semiconductor controlled switching element connected in parallel to said primary coil portion of said ignition coil; and a control circuit to control said semiconductor controlled switching element so that it is non-conductive upon said engine revolving at less than the predetermined r.p.m. for normal operation of the ignition system and so that said semiconductor controlled switching element is conductive upon the engine revolving at more than said predetermined r.p.m. whereby it shorts a primary voltage across said primary coil portion of said ignition coil established upon opening of said switching means.

REFERENCES:
patent: 3356082 (1967-12-01), Jukes
patent: 3563219 (1971-02-01), Mieras
patent: 3581720 (1971-06-01), Hemphill
patent: 3776204 (1973-12-01), Harris
patent: 3789810 (1974-02-01), Sattler

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