Engine speed limiter

Details Engine speed limiter Engine speed limiter

1971-10-19

1978-02-21

Myhre, Charles J.

Internal-combustion engines

Intake manifold

Manifold tuning, balancing or pressure regulating means

123148E, F02D 1110, F02P 100

Patent

active

040746658

ABSTRACT:
Disclosed herein is a circuit which is connectable to an engine alternator and also to the trigger circuit of an amine ignition system to prevent overspeeding of the engine when the engine is disconected from its load. When engine output shaft attains an engine speed above a predetermined rate of rotation, the output from the engine alternator causes a current flow through a zener diode to make a transistor switch conducting, thereby providing a circuit path which grounds the ignition trigger circuit and renders the ignition trigger circuit inoperable. When the engine speed drops below the predetermined value, the zener diode blocks current flow to make the transistor switch non-conducting and open the shunt path.

REFERENCES:
patent: 3356082 (1967-12-01), Jukes
patent: 3406775 (1968-10-01), Magnuski
patent: 3430615 (1969-03-01), Chavis
patent: 3581720 (1971-06-01), Hemphill

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