An engine ignition control circuit having a failsafe for a crank

Details An engine ignition control circuit having a failsafe for a crank An engine ignition control circuit having a failsafe for a crank

1982-06-29

1984-12-04

Lall, Parsholem S.

Internal-combustion engines

Charge forming device

Fuel injection system

123414, 123417, 123643, F02P 500

Patent

active

044857845

ABSTRACT:
An engine ignition control circuit includes a crank angle sensor and two reference position sensors. The engine ignition control circuit also includes an ignition timing control unit generating primary ignition signals and a replacement ignition signal generator device. The control circuit further includes a crank angle monitoring circuit which detects the failure of the crank angle sensor and generates a malfunction signal. The malfunction signal controls a data selector which outputs either the primary ignition signals or the replacement ignition signals to drivers and ignition coils for the engine.

REFERENCES:
patent: 4239024 (1980-12-01), Leichle
patent: 4245591 (1981-01-01), Nishida et al.
patent: 4317437 (1982-03-01), Lindgreu
patent: 4378004 (1983-03-01), Petrie
patent: 4378771 (1983-04-01), Jawada et al.
patent: 4385605 (1983-05-01), Petrie et al.

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