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Method and apparatus for reducing particulates and NO.sub.X emissions from diesel engines utilizing oxygen enriched combustion air

United States Patent

6,055,808
May 2, 2000
View the Complete Patent at the US Patent & Trademark Office
Argonne National Laboratory - Visit the Technology Development and Commercialization Website
Novel Application of Air Separation Membranes Reduces Engine NOx Emissions
An emission control system for reducing total particulates and NO.sub.X emissions from the exhaust of a diesel engine includes an air supply system that supplies oxygen enriched air to an air intake of the engine. The air supply system may include a selectively permeable air separating membrane device for producing the oxygen enriched air. In order to effectively utilize the increase in the concentration level of oxygen in the intake air, the amount of fuel being supplied to the diesel engine also is increased at a minimum in proportion to the increased concentration level of oxygen in the intake air. The increase in the amount of such fuel being supplied to the diesel engine can be adjusted by an electronic fuel injection system used on such diesel engines. In addition, the electronic fuel injection system is used to retard the injection timing of the engine.
Poola; Ramesh B. (Woodridge, IL), Sekar; Ramanujam R. (Naperville, IL)
The University of Chicago (Chicago, IL)
09/ 102,232
June 22, 1998
CONTRACTUAL ORIGIN OF THE INVENTION The United States Government has rights in this invention pursuant to Contract No. W-31-109-ENG-38 between the United States Government and The University of Chicago.