Exhaust system for outboard motor

Details Exhaust system for outboard motor Exhaust system for outboard motor

2005-01-11

2005-01-11

Nguyen, Tu M. (Department: 3748)

Power plants

Internal combustion engine with treatment or handling of...

Pulsed, timed, tuned or resonating exhaust

C060S313000, C060S323000, C440S08900C

Reexamination Certificate

active

06840038

ABSTRACT:
An exhaust system for an internal combustion engine of an outboard motor is provided. The exhaust system provides dual exhaust passages, simplifying the engine's construction and reducing manufacturing costs, while optimizing engine performance. The exhaust system includes exhaust ports having equal lengths that avoid differential pressure losses across cylinders. The arrangement of the exhaust passages enables a cowling to have a tapered aerodynamic design.

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U.S. Appl. No. 09/860,989 filed May 17, 2001, entitled “Exhaust System for Outboard Motor,” and amended on Jul. 11, 2002.
Publication No. US 2002/0068491 A1, published on Jun. 6, 2002, entitled “Exhaust System for Outboard Motor”.

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