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Energies 2018, 11(6), 1324; https://doi.org/10.3390/en11061324

Gear Ratio Optimization of a Multi-Speed Transmission for Electric Dump Truck Operating on the Structure Route

School of Mechanical Engineering, University of Science and Technology Beijing, Beijing 100083, China
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Received: 14 April 2018 / Revised: 16 May 2018 / Accepted: 17 May 2018 / Published: 23 May 2018
(This article belongs to the Collection Electric and Hybrid Vehicles Collection)
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Abstract

Research demonstrated that the application of a multi-speed transmission could improve the dynamic and economic performance of electric vehicles. This paper deals with a novel multi-speed transmission for the electric dump truck (EDT) operating on the structure route (SR), which has a definite starting point and end point without complex traffic conditions. To optimize the gear ratio and shift schedule to reduce energy consumption in such conditions, the mathematical model of the transmission and the dynamic model of the EDT are initially required. Following this, the shift schedule is presented according to the motor efficiency map. After that, the gear ratio optimization is carried out by a particle swarm optimization (PSO) algorithm. Moreover, the proposed EDT is compared with an EDT with a single-speed transmission. The simulation results show that the energy consumption is reduced by 6.1%. View Full-Text
Keywords: electric dump truck; structure route; energy efficiency; gear ratio optimization; performance analysis electric dump truck; structure route; energy efficiency; gear ratio optimization; performance analysis
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Tan, S.; Yang, J.; Zhao, X.; Hai, T.; Zhang, W. Gear Ratio Optimization of a Multi-Speed Transmission for Electric Dump Truck Operating on the Structure Route. Energies 2018, 11, 1324.

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