Volume 14: Low Carbon Cities and Urban Energy Systems: Part III

Optimal Energy Management Strategy for HEVs with Consideration of Thermal Dynamics Hongqing Chu, Haoyun Shi, Tielong Shen

Abstract

The fuel efficiency are related to the engine temperature. The total fuel consumption of a warmed-up engine is less than that of the cold-start engine for the same driving cycle. Hybrid electric vehicle (HEV) allows the motor to work during the engine warming-up process. Optimizing torque distribution ratio can help reduce engine fuel consumption of the warm-up process. The traditional energy management strategy, which does not consider the engine temperature, is designed for a warmed-up engine. In this paper, an energy management strategy with considering engine warming-up is formulated.

Keywords energy management strategy, hybrid electric vehicle, engine thermal dynamics