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Side Branch Absorber for Exhaust Manifold of Two-Stroke Internal Combustion Engine: 7,866,147

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Abstract: 

A method of improving scavenging operation of a two-stroke internal combustion engine. The exhaust pressure of the engine is analyzed to determine if there is a pulsation frequency. Acoustic modeling is used to design an absorber. An appropriately designed side branch absorber may be attached to the exhaust manifold.

Patent Number: 
7,866,147
Date Of Issue: 
01/10/2011
Inventors: 

Ralph E. Harris; Eugene L. Broerman III; Gary D. Bourn

Full Text: 
US Patent and Trademark Office