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Energies 2018, 11(1), 172; doi:10.3390/en11010172

Investigation of a Novel Coaxial Power-Split Hybrid Powertrain for Mining Trucks

1
School of Mechanical Engineering, University of Science and Technology Beijing, Beijing 100083, China
2
Faculty of Engineering and IT, University of Technology Sydney, 15 Broadway, Ultimo NSW 2007, Australia
*
Author to whom correspondence should be addressed.
Received: 16 November 2017 / Revised: 8 January 2018 / Accepted: 9 January 2018 / Published: 11 January 2018
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Abstract

Due to the different working conditions and specification requirements of mining trucks when compared to commercial passenger vehicles, better fuel efficiency of mining trucks could lead to more significant economic benefits. Therefore, investigating a hybrid transmission system becomes essential. A coaxial power-split hybrid powertrain system for mining trucks is presented in this paper. The system is characterized as comprising an engine, a generator (MG1), a motor (MC2), two sets of planetary gears, and a clutch (CL1). There are six primary operation modes for the hybrid system including the electric motor mode, the engine mode, the hybrid electric mode, the hybrid and assist mode, the regenerative mode, and the stationary charging mode. The mathematical model of the coaxial power-split hybrid system is established according to the requirements of vehicle dynamic performance and fuel economy performance in a given driving cycle. A hybrid vehicle model based on a rule-based control strategy is established to evaluate the fuel economy. Compared with the Toyota Hybrid System (THS) and the conventional mechanical vehicle system using a diesel engine, the simulation results based on an enterprise project indicate that the proposed hybrid system can enhance the vehicle’s fuel economy by 8.21% and 22.45%, respectively, during the given mining driving cycle. The simulation results can be used as a reference to study the feasibility of the proposed coaxial hybrid system whose full potential needs to be further investigated by adopting non-causal control strategies. View Full-Text
Keywords: coaxial power-split hybrid system; operation mode; performance analysis; energy efficiency coaxial power-split hybrid system; operation mode; performance analysis; energy efficiency
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Yang, W.; Liang, J.; Yang, J.; Zhang, N. Investigation of a Novel Coaxial Power-Split Hybrid Powertrain for Mining Trucks. Energies 2018, 11, 172.

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