Transient Operation Energy Management Strategy for a Hybrid Electric Vehicle Powertrain

A method and system for providing a dynamic torque band for hybrid electric vehicle (HEV) transient management includes determining a torque band indicative of an engine torque operation region representing efficient operation of the powertrain across a range of engine speeds. An engine torque comma...

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Bibliographic Details
Main Authors KOZAREKAR SHAILESH SHRIKANT, KUANG MING LANG, MCGEE RYAN ABRAHAM, WANG QING, SYED FAZAL URRAHMAN
Format Patent
LanguageEnglish
Published 25.10.2012
Subjects
CALCULATING
COMPUTING
CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE ORDIFFERENT FUNCTION
CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
PERFORMING OPERATIONS
PHYSICS
ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TOTHE CONTROL OF A PARTICULAR SUB-UNIT
TRANSPORTING
VEHICLES IN GENERAL
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Summary:A method and system for providing a dynamic torque band for hybrid electric vehicle (HEV) transient management includes determining a torque band indicative of an engine torque operation region representing efficient operation of the powertrain across a range of engine speeds. An engine torque command based on an actual speed of the engine is generated. The engine torque command is outputted to the engine if the engine torque command is within the torque band. The engine torque command is modified to be within the torque band if the engine torque command is out of the torque band and the modified engine torque command is outputted to the engine.
Bibliography:Application Number: US201113089398