Skip to Content
Find More Like This
Return to Search

Adjusting the specificity of an engine map based on the sensitivity of an engine control parameter relative to a performance variable

United States Patent

8,874,351
October 28, 2014
View the Complete Patent at the US Patent & Trademark Office
Methods and systems for engine control optimization are provided. A first and a second operating condition of a vehicle engine are detected. An initial value is identified for a first and a second engine control parameter corresponding to a combination of the detected operating conditions according to a first and a second engine map look-up table. The initial values for the engine control parameters are adjusted based on a detected engine performance variable to cause the engine performance variable to approach a target value. A first and a second sensitivity of the engine performance variable are determined in response to changes in the engine control parameters. The first engine map look-up table is adjusted when the first sensitivity is greater than a threshold, and the second engine map look-up table is adjusted when the second sensitivity is greater than a threshold.
Jiang; Li (Ann Arbor, MI), Lee; Donghoon (Ann Arbor, MI), Yilmaz; Hakan (Ann Arbor, MI), Stefanopoulou; Anna (Ann Arbor, MI)
Robert Bosch GmbH (Stuttgart, DE)
13/ 435,535
20120253634
March 30, 2012
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT This invention was made with government support under grant No. DE-FC26-07NT43274 awarded by the Department of Energy. The government has certain rights in the invention.