Method and apparatus for controlling ignition timing for marine

Details Method and apparatus for controlling ignition timing for marine Method and apparatus for controlling ignition timing for marine

1990-02-09

1991-07-02

Argenbright, Tony M.

Internal-combustion engines

Combustion chamber means combined with air-fuel mixture...

123424, F02P 514, F02P 5145

Patent

active

050277715

ABSTRACT:
An apparatus for controlling an ignition timing for a marine engine has a temperature sensor for detecting a cold or warm-up state of the engine and for outputting an ON/OFF signal, and has an ignition timing controller for receiving the signal from the temperature sensor, for receiving signals representing an engine rotational speed and a throttle opening degree which are sent from other sensors, and for setting an optimum ignition timing. The ignition timing controller includes a spark advance control arrangement for setting the ignition timing to a state in which it is spark advanced by a predetermined angle when a cold signal from the temperature sensor is input, a first spark delay control arrangement for immediately setting the ignition timing to a spark delay state when the engine rotational speed reaches an unshiftable rotational speed after completion of the operation of said spark advance, and a second spark delay control arrangement for immediately setting the ignition timeing to the spark delay state when a warm-up signal is input from the temperature sensor.

REFERENCES:
patent: 4367711 (1983-01-01), Ikeura
patent: 4442813 (1984-04-01), Magase et al.
patent: 4570596 (1986-02-01), Sato
patent: 4633834 (1987-01-01), Takeuchi et al.
patent: 4702211 (1987-10-01), Kato et al.

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