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Side branch absorber for exhaust manifold of two-stroke internal combustion engine

United States Patent

January 11, 2011
View the Complete Patent at the US Patent & Trademark Office
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.
Harris; Ralph E. (San Antonio, TX), Broerman, III; Eugene L. (San Antonio, TX), Bourn; Gary D. (Laramie, WY)
Southwest Research Institute (San Antonio, TX)
11/ 541,008
September 29, 2006
GOVERNMENT LICENSE RIGHTS The U.S. Government has a paid-up license in this invention and the right in certain circumstances to require the patent owner to license others on reasonable terms as provided for by the terms of Contract No. DE-FC26-02NT41646 for the United States Department of Energy.