Exhaust system for outboard motor

Details Exhaust system for outboard motor Exhaust system for outboard motor

2005-07-26

2005-07-26

Wright, Andrew D. (Department: 3617)

Marine propulsion

Means for accomodating or moving engine fluids

Means for handling exhaust gas

C440S08800J

Reexamination Certificate

active

06921307

ABSTRACT:
An outboard motor includes a housing unit mounted on an associated watercraft. An engine is disposed above the housing unit. The engine defines a first exhaust passage communicating with a combustion chamber of the engine. The housing unit defines a second exhaust passage communicating with the first exhaust passage. The second exhaust passage communicates with outside through at least an underwater exhaust discharge port formed at a portion of the housing unit. An air intake device communicates with either the first exhaust passage or the second exhaust passage. The air intake device includes a one-way valve that allows air to enter the first or second exhaust passage and inhibits exhaust gases from moving beyond the one-way valve.

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Pending Application entitled,Air Induction System for Engine,U.S. Appl. No. 09/906,570, filed Jul. 16, 2001, in twenty-nine (29) pages with nine (9) sheets of drawings.

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