Title:
ENGINE CONTROL USING TORQUE ESTIMATION
Document Type and Number:
WIPO Patent Application WO2002071308
Kind Code:
A9
Abstract:
Torque estimation techniques in the real-time basis for engine control and diagnostics applications using the measurement of crankshaft speed variation are disclosed. Two different torque estimation approaches are disclosed including Stochastic Analysis and Frequency Analysis. An estimation model function consisting of three primary variables representing crankshaft dynamics such as crankshaft position, speed and acceleration is used for each estimation approach. The torque estimation method is indenpendent of the engine inputs (air, fuel, and spark). Both approaches have been analyzed and compared with respect to estimation accuracy and computational requirements. Results show that both methods permits estimations of the indicated torque based on the crankshaft speed measurement while providing not only accurate but also relatively fast estimations during the computational processes.
Inventors:
RIZZONI GIORGIO
LEE BYUNGHO
GUEZENNEC YANN
SOLIMAN AHMED
CAVALLETTI MAURO
WATERS JAMES
LEE BYUNGHO
GUEZENNEC YANN
SOLIMAN AHMED
CAVALLETTI MAURO
WATERS JAMES
Application Number:
PCT/US2002/006624
Publication Date:
April 01, 2004
Filing Date:
March 05, 2002
Export Citation:
Assignee:
UNIV OHIO STATE (US)
International Classes:
F02B17/00; G01M15/00; G06G7/48; G06G7/50; (IPC1-7): G06G7/48; G06G7/50
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