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Closed loop engine control for regulating NOx emissions, using a two-dimensional fuel-air curve

United States Patent

January 30, 2007
View the Complete Patent at the US Patent & Trademark Office
An engine control strategy that ensures that NOx emissions from the engine will be maintained at an acceptable level. The control strategy is based on a two-dimensional fuel-air curve, in which air manifold pressure (AMP) is a function of fuel header pressure and engine speed. The control strategy provides for closed loop NOx adjustment to a base AMP value derived from the fuel-air curve.
Bourn; Gary D. (San Antonio, TX), Smith; Jack A. (Hendersonville, NC), Gingrich; Jess W. (San Antonio, TX)
Southwest Research Institute (San Antonio, TX)
11/ 237,409
September 27, 2005
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-FC 26-03NT41859 for the Department of Energy.