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Energies 2018, 11(1), 34;

Research on a Novel Hydraulic/Electric Synergy Bus

National Local Joint Engineering Laboratory of Automobile Parts Technology, South China University of Technology, Guangzhou 510640, China
Department of Mechanical and Mechatronics Engineering, University of Waterloo, Waterloo, ON N2L3G1, Canada
Author to whom correspondence should be addressed.
Received: 17 November 2017 / Revised: 15 December 2017 / Accepted: 21 December 2017 / Published: 24 December 2017
(This article belongs to the Special Issue The International Symposium on Electric Vehicles (ISEV2017))
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In recent years, increasing concerns regarding environmental pollution and requirements for lower fossil fuel consumption have increased interest in alternative hybrid powertrains. As a result, this paper presents a novel hydraulic/electric synergy powertrain with multiple working modes. The three energy sources (i.e., engine, battery, and hydraulic accumulator) in this configuration are regulated by a dual planetary gear set to achieve optimal performances. This paper selects the component sizes of a hybrid electric vehicle (HEV), a hydraulic hybrid vehicle (HHV), and a hydraulic/electric synergy vehicle (HESV), based on the dynamic performance of a target vehicle (TV). In addition, this paper develops the forward simulation models of the four aforementioned vehicles in the MATLAB/Simulink/Driveline platform, in which the fuel economy simulations are carried out in relation to the Chinese urban bus cycle. The simulation results show that the fuel consumption of the three hybrid vehicles is similar, but much better than, that of the TV. Finally, based on the operating cost calculations over a five-year working period, the lowest cost ranges of the three hybrid vehicles are determined, which provides a method for choosing the optimal hybrid scheme. View Full-Text
Keywords: hybrid energy sources; battery; hydraulic accumulator; power split hybrid energy sources; battery; hydraulic accumulator; power split

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Zhao, K.; Liang, Z.; Huang, Y.; Wang, H.; Khajepour, A.; Zhen, Y. Research on a Novel Hydraulic/Electric Synergy Bus. Energies 2018, 11, 34.

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