Boat and outboard motor having air intake system

Details Boat and outboard motor having air intake system Boat and outboard motor having air intake system

2007-07-03

2007-07-03

Olson, Lars A. (Department: 3617)

Marine propulsion

Screw propeller

Propulsion unit casing

C440S08800J

Reexamination Certificate

active

11273041

ABSTRACT:
A boat includes an outboard motor having an internal combustion engine enclosed within a cowling. The cowling has a rear inlet port for allowing outside air to be drawn into the cowling. A closure member selectively closes the inlet port depending upon a certain engine operating parameters. In another embodiment, the cowling also includes a front air inlet port, and a front closure device for selectively opening and closing the front inlet port.

REFERENCES:
patent: 4952180 (1990-08-01), Watanabe et al.
patent: 5277633 (1994-01-01), Kato et al.
patent: 5937818 (1999-08-01), Kawai et al.
patent: 6413131 (2002-07-01), Phillips et al.
patent: 6899579 (2005-05-01), Bruestle

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