Power plants – Internal combustion engine with treatment or handling of... – Common receiver having inlets from plural cylinder
Reexamination Certificate
2007-02-06
2007-02-06
Tran, Binh Q. (Department: 3748)
Power plants
Internal combustion engine with treatment or handling of...
Common receiver having inlets from plural cylinder
C060S312000, C060S313000, C060S324000
Reexamination Certificate
active
10923281
ABSTRACT:
An exhaust system for a multi-cylinder engine can include a plurality of exhaust pipes with first upstream ends connected to exhaust openings of a multi-cylinder engine, and a collecting pipe connected to the second downstream ends of the exhaust pipes for collecting exhaust introduced from the exhaust pipes and directing it to a silencer. The collecting pipe has a front-end portion communicated to exhaust passages of the exhaust pipes, a middle portion for collecting the exhaust introduced from the front-end portion, and a rear-end portion for further collecting the exhaust introduced from the middle portion. The middle portion is provided with exhaust control means for controlling the area of the exhaust passages in accordance with engine speed.
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Knobbe Martens Olson & Bear LLP
Yamaha Hatsudoki Kabushiki Kaisha
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