Open AccessEnergy Flow Chart-Based Energy Efficiency Analysis of a Range-Extended Electric Bus
Author(s) -
Xiaogang Wu,
Chen Hu,
Jingfu Chen
Publication year - 2014
Publication title -
mathematical problems in engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.262
H-Index - 62
eISSN - 1026-7077
pISSN - 1024-123X
DOI - 10.1155/2014/972139
Subject(s) - powertrain , efficient energy use , range (aeronautics) , energy flow , automotive engineering , flow chart , chart , traction (geology) , driving range , energy management , energy (signal processing) , driving cycle , engineering , process engineering , computer science , environmental science , electric vehicle , power (physics) , electrical engineering , mechanical engineering , mathematics , control engineering , aerospace engineering , statistics , physics , quantum mechanics , torque , thermodynamics
This paper puts forward an energy flow chart analysis method for a range-extended electric bus. This method uses dissipation and cycle energy, recycle efficiency, and fuel-traction efficiency as evaluation indexes. In powertrain energy efficiency analysis, the range-extended electric bus is developed by Tsinghua University, the driving cycle based on that of Harbin, a northern Chinese city. The CD-CS and blended methods are applied in energy management strategies. Analysis results show with average daily range of 200 km, auxiliary power of 10 kW, CD-CS strategy, recycle ability and fuel-traction efficiency are higher. The input-recycled efficiency using the blended strategy is 24.73% higher than CD-CS strategy, while the output-recycled efficiency when using the blended strategy is 7.83% lower than CD-CS strategy
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