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Secondary air injection system and method

United States Patent

8,806,868
August 19, 2014
View the Complete Patent at the US Patent & Trademark Office
According to one embodiment of the invention, a secondary air injection system includes a first conduit in fluid communication with at least one first exhaust passage of the internal combustion engine and a second conduit in fluid communication with at least one second exhaust passage of the internal combustion engine, wherein the at least one first and second exhaust passages are in fluid communication with a turbocharger. The system also includes an air supply in fluid communication with the first and second conduits and a flow control device that controls fluid communication between the air supply and the first conduit and the second conduit and thereby controls fluid communication to the first and second exhaust passages of the internal combustion engine.
Wu; Ko-Jen (Troy, MI), Walter; Darrell J. (Romeo, MI)
GM Global Technology Operations LLC (Detroit, MI)
13/ 029,818
20120210712
February 17, 2011
FEDERAL RESEARCH STATEMENT This invention was made with Government support under Agreement No. DE-FC26-07NT43271, awarded by the Department of Energy. The U.S. Government has certain rights in the invention.