Exhaust timing control valve control arrangement

Details Exhaust timing control valve control arrangement Exhaust timing control valve control arrangement

1997-10-15

1999-08-10

Avila, Stephen

Marine propulsion

Means for accomodating or moving engine fluids

Means for handling exhaust gas

123 65PE, B63H 2132

Patent

active

059349581

ABSTRACT:
An exhaust timing control valve control arrangement is disclosed. The exhaust valve is positioned in an exhaust port of an engine and movable between a retracted position in which the exhaust flow timing is advanced, and an extended position into the port in which the exhaust flow timing is retarded. A control is provided for moving the valve in a cleaning operation after the engine is started and running above a predetermined low speed. The cleaning operation may additionally be performed when the engine is shut off.

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