Engine control system of marine outboard engine

Details Engine control system of marine outboard engine Engine control system of marine outboard engine

1987-11-09

1989-01-03

Wolfe, Willis R.

Internal-combustion engines

Accessories

Covers, trays, vibrators, corrosion inhibitors, air filters

123 4115, 123196S, 123335, F02B 7708, F01P 1116, F01M 118, F02P 5145

Patent

active

047948973

ABSTRACT:
An engine control system of a marine outboard engine has an oscillator which operates in response to an abnormality signal resulting from detection signals from an oil level sensor and a temperature sensor, and in response to a signal from a tachometric sensor to transmit normal and retarded ignition signals alternately and repeatedly to a firing timing control circuit, which thereupon controls the engine ignition with normal firing timing when receiving the normal ignition signal and with retarded firing timing when receiving the retarded ignition signal. The engine power output under retarded firing time is lower than that under normal firing timing, whereby the engine emits an abnormal humming sound, warning the operator that an abnormal condition has occurred.

REFERENCES:
patent: 3533391 (1970-10-01), Lockmuller
patent: 4147151 (1979-04-01), Wright
patent: 4459951 (1984-07-01), Tobinaga et al.
patent: 4557224 (1985-12-01), Du Bois
patent: 4562801 (1986-01-01), Koike

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