Transient operation energy management strategy for a hybrid electric vehicle powertrain

US8473133B2 · kind B2 · utility

Assignee

• Ford Global Technologies, LLC · US

Inventors

• Qing Wang · Kowloon, CN
• Fazal Urrahman Syed · Canton, US
• Ming Lang Kuang · Canton, US
• Shailesh Shrikant Kozarekar · Novi, US
• Ryan Abraham McGee · Ann Arbor, US

Key dates

• Filing date: Apr 19, 2011
• Grant date: Jun 25, 2013
• Expiry date: Oct 3, 2031

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02T10/84
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

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.