Exhaust timing valve control for watercraft engine

Details Exhaust timing valve control for watercraft engine Exhaust timing valve control for watercraft engine

1997-12-23

1999-12-28

Sotelo, Jesus D.

Marine propulsion

Means for accomodating or moving engine fluids

Means for handling exhaust gas

123 65PE, 123323, B63H 2132

Patent

active

060073926

ABSTRACT:
An exhaust timing valve control for an exhaust timing valve of an engine powering a watercraft is disclosed. The engine has an exhaust port leading from a combustion chamber for routing exhaust products therefrom and an exhaust timing valve cooperable with the exhaust port and movable between a first position for delaying the closing of the exhaust port and a second position for advancing the closing of the exhaust port. The engine includes a coil member providing a pulsed output when the engine is running. The exhaust timing valve control controls the position of the exhaust timing valve, the exhaust timing valve control including an engine speed detector which detects the speed of the engine based upon the output of the coil member.

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