Optimal Control Strategy for Series Hybrid Electric Vehicles in the Warm-Up Process

Da Wang, Chuanxue Song, Yulong Shao, Shixin Song, Silun Peng and Feng Xiao
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Da Wang: College of Automotive Engineering, Jilin University, Changchun 130000, China
Chuanxue Song: College of Automotive Engineering, Jilin University, Changchun 130000, China
Yulong Shao: College of Automotive Engineering, Jilin University, Changchun 130000, China
Shixin Song: College of Automotive Engineering, Jilin University, Changchun 130000, China
Silun Peng: College of Automotive Engineering, Jilin University, Changchun 130000, China
Feng Xiao: College of Automotive Engineering, Jilin University, Changchun 130000, China

Energies, 2018, vol. 11, issue 5, 1-20

Abstract: To address the problems of low efficiency and high fuel consumption during the cold start and warm-up processes of internal combustion engines, a series hybrid electric vehicle was selected as the research object and two optimal control strategies were designed. A bench test was performed to determine the following: (a) the influence of engine coolant temperature on effective thermal efficiency; and (b) the relationship between engine operating conditions and coolant temperature increase rate. On the basis of the test results, two sets of warm-up process optimization control strategies were designed using a dynamic programming method and a fuzzy control method based on equivalent consumption minimization strategy (ECMS). The test results show that the fuzzy control method for the coolant temperature can effectively shorten the time required to warm up the engine, and the energy consumption of warm-up process can be reduced by nearly 10% through the dynamic programming method.

Keywords: series hybrid electric vehicle; warm-up process optimization; fuzzy control; dynamic programming; energy management strategy (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2018
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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