Drive Control Strategy for Full Hybrid Electric Vehicle with CVT Based on Efficiency Optimization

YANG Yang, GONG Hui, QIN Da-tong, SU Ling, LIN Guang-yu

China Journal of Highway and Transport ›› 2014, Vol. 27 ›› Issue (3) : 108-115,121.

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China Journal of Highway and Transport ›› 2014, Vol. 27 ›› Issue (3) : 108-115,121.

Drive Control Strategy for Full Hybrid Electric Vehicle with CVT Based on Efficiency Optimization

  • YANG Yang1, GONG Hui2, QIN Da-tong1, SU Ling3, LIN Guang-yu4
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Abstract

In order to improve the economy of full hybrid electric vehicle (HEV) equipped with continuously variable transmission (CVT), system efficiency optimization models for various operating modes were built with consideration of efficiency of engine, integrated starter and generator (ISG), battery and CVT. Two driving schemas, charge consumption plan and charge growth plan, were proposed. For the target of instantaneous optimization of system efficiency, the energy management strategy was established. The cycle simulation model of full HEV with CVT was established using MATLAB/Simulink. The simulation was performed under NEDC working condition. The results show that fuel consumption of full HEV with CVT by employing the control strategy proposed in this paper decreases by 10.42%, compared with the strategy in ADVISOR, and compared with the power equivalent traditional vehicle, decreases by 39.77%. The control strategy proposed in the article can also control the battery state of charge within a reasonable range of operation.

Key words

automotive engineering / full HEV / efficiency optimization / economic control strategy / fuel-electric factor

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YANG Yang, GONG Hui, QIN Da-tong, SU Ling, LIN Guang-yu. Drive Control Strategy for Full Hybrid Electric Vehicle with CVT Based on Efficiency Optimization[J]. China Journal of Highway and Transport, 2014, 27(3): 108-115,121

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