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United States Patent Application

View the Complete Application at the US Patent & Trademark Office
System and method for learning an intake oxygen concentration of an engine. In one embodiment, the system includes an intake oxygen sensor and an electronic control unit. The intake oxygen sensor is configured to measure an oxygen concentration of intake air and output a signal indicative of an intake oxygen concentration value. The electronic control unit is configured to receive the signal indicative of the intake oxygen concentration value, determine whether fuel is being injected into an engine, determine whether the engine is operating in an over-run condition, control a valve to sweep an air pressure of an intake path of the engine across a plurality of air pressures, and store information indicative of intake oxygen concentration values across the plurality of air pressures to learn the intake oxygen concentration of the engine.
Allen, Justin (Clarkston, MI)
15/ 228,911
August 4, 2016
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH [0001] This invention was made with government support under DOE Cooperative Agreement No. DE-EE0003303 awarded by the U.S. Department of Energy. The U.S. government has certain rights in the invention, which are further defined in an Advance Waiver of Domestic and Foreign Invention Rights under DOE Cooperative Agreement No. DE-EE0003303; W(A)-2012-007, CH-1656.