Engine starting cycle and overcrank control system

Details Engine starting cycle and overcrank control system Engine starting cycle and overcrank control system

1985-10-15

1987-03-31

Dolinar, Andrew M.

Internal-combustion engines

Starting device

For airplane

123179R, 290 37A, 290 38C, F02N 1108

Patent

active

046534423

ABSTRACT:
An engine starting cycle cranking and rest period timing circuit and an overcrank shut down circuit includes a 24 stage frequency divider connected to starting motor relays, and an engine starter disconnect circuit and a start signal circuit functioning to provide a predetermined number of engine starter motor cranking periods followed by rest periods. The frequency divider circuit is connected to provide coordination of the starter motor cranking cycle with an overcrank signal generated by the frequency divider. An overcrank signal will activate only when all three output terminals of the frequency divider circuit are simultaneously of the same signal amplitude which will always occur at the predetermined maximum number of crank periods.

REFERENCES:
patent: 3248555 (1966-04-01), Fried
patent: 3415999 (1968-12-01), Noury
patent: 4231073 (1980-10-01), Suchko
patent: 4236594 (1980-12-01), Ramsperger
patent: 4392059 (1983-07-01), Nespor

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