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Study on powertrain system for CNG-electric hybrid city bus

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Abstract

In order to obtain better economy and power performances of compressed natural gas (CNG) and electric hybrid city bus, the powertrain system is designed and studied in this paper. Based on manufacturing technology, operation cost and dynamic property, economy is regarded as the main optimization goal for CNG-electric hybrid city bus, which determines the structure of powertrain system of CNG-electric hybrid city bus. Vehicle control strategy is established by working conditions. Some key component parameters are matched and designed. Work model of motor/generator is established, and torque characteristic curve of motor/generator is obtained. Full vehicle model of CNG-electric hybrid city bus is established by ADVISOR software. Comparison with tradition natural gas city bus, the maximum gradability rises by 69.8%, the maximum gradability of 20 km/h is 25.4%, the maximum speed rises by 8.6%, and the acceleration performance of 0∼50 km/h rises by 21.9%. The fuel consumption reduces by 23.3% in the BC-CTC cycle working condition, and the fuel consumption reduces by 25.1% in the ECE+EUDC cycle working condition. So, the performances of power and economy have been obviously improved, compared with traditional CNG city bus, which indicates that this method can be used to study the powertrain system of CNG-electric hybrid city bus.

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Authors and Affiliations

  1. School of mechatronics engineering, East China Jiaotong University, Nanchang, 330013, China

    Qiping Chen

  2. The State Key Laboratory of Mechanical Transmission, Chongqing University, Chongqing, 400044, China

    Hongyu Shu & Kun Wang

Authors
  1. Qiping Chen
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  2. Hongyu Shu
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  3. Kun Wang
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Corresponding author

Correspondence to Qiping Chen.

Additional information

Recommended by Associate Editor Kyongsu Yi

Qiping Chen received his Ph.D. in Mechanical Engineering in 2013, from Chongqing University, Chongqing, China. He is currently a Lecturer of School of mechatronics engineering, East China Jiaotong University, China. His research interests include electric vehicles, hybrid vehicles, mechatronics, etc.

Hongyu Shu received his Ph.D. in Mechanical Engineering in 1999, from Chongqing University, Chongqing, China. He is currently a professor of State Key Laboratory of Mechanical Transmission, Chongqing University, China. His research and teaching interests include hybrid drive mechatronics, hydraulic shock absorber and vehicle engineering et al. He is currently a senior member of the Chinese Society of Mechanical Engineering.

Kun Wang received his M.S. degree in Mechanical Engineering in 2010, from Chongqing University, Chongqing, China. His research interests include electric vehicles, hybrid vehicles, mechatronics, etc.

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Chen, Q., Shu, H. & Wang, K. Study on powertrain system for CNG-electric hybrid city bus. J MECH SCI TECHNOL 28, 4283–4289 (2014). https://doi.org/10.1007/s12206-014-0942-4

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  • DOI: https://doi.org/10.1007/s12206-014-0942-4

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