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Use of exhaust gas as sweep flow to enhance air separation membrane performance

United States Patent

February 11, 2003
View the Complete Patent at the US Patent & Trademark Office
An intake air separation system for an internal combustion engine is provided with purge gas or sweep flow on the permeate side of separation membranes in the air separation device. Exhaust gas from the engine is used as a purge gas flow, to increase oxygen flux in the separation device without increasing the nitrogen flux.
Dutart; Charles H. (Washington, IL), Choi; Cathy Y. (Morton, IL)
Caterpillar Inc (Peoria, IL)
10/ 141,250
May 8, 2002
The Government of the United States of America has rights in this invention pursuant to Contract No. DE-FC05-00OR22806 awarded by the U.S. Department of Energy.