Starter protector for an engine

Details Starter protector for an engine Starter protector for an engine

1988-12-27

1990-08-07

Leung, Philip H.

Prime-mover dynamo plants

Electric control

Electric-starting motor

123179B, F02N 1700

Patent

active

049470515

ABSTRACT:
A starter protector for a starter of an engine has a switching circuit which turns the starter off, and a calculating circuit which measures the frequency of ripples which are superimposed on either the terminal voltage or the terminal current of the starter and controls the switching circuit so as to turn off the starter when the frequency exceeds a prescribed value. In another form of the invention, a calculating circuit counts the number of ripples which are superimposed on the terminal voltage or terminal current of the starter and controls the switching circuit to turn off the starter when the number of ripples exceeds a prescribed value.

REFERENCES:
patent: 3712283 (1973-01-01), Kiess et al.
patent: 4198945 (1980-04-01), Eyermann et al.
patent: 4750583 (1986-02-01), Hamano et al.

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