Comparison on Energy Economy and Vibration Characteristics of Electric and Hydraulic in-Wheel Drive Vehicles

Shilei Zhou, Paul Walker, Yang Tian, Cong Thanh Nguyen and Nong Zhang
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Shilei Zhou: Faculty of Engineering and Information Technology, University of Technology Sydney, Sydney, NSW 2007, Australia
Paul Walker: Faculty of Engineering and Information Technology, University of Technology Sydney, Sydney, NSW 2007, Australia
Yang Tian: School of Mechanical Engineering, Yanshan University, Qinghuangdao 066004, China
Cong Thanh Nguyen: Faculty of Engineering and Information Technology, University of Technology Sydney, Sydney, NSW 2007, Australia
Nong Zhang: Faculty of Engineering and Information Technology, University of Technology Sydney, Sydney, NSW 2007, Australia

Energies, 2021, vol. 14, issue 8, 1-15

Abstract: This paper compares the energy economy and vertical vibration characteristics of in-wheel drive electric vehicles (IEVs), in-wheel drive electric hydraulic hybrid vehicles (IHVs) and centralized drive electric vehicles (CEVs). The dynamic programming (DP) algorithm is used to explore the optimal energy consumption of each vehicle. The energy economy analysis shows that the IEV consumes more energy than the CEV due to its relatively lower electric motor efficiency, even with fewer driveline components. The IHV consumes much more energy than the IEV and CEV because of the energy loss in the hydraulic driveline. The vertical vibration analysis demonstrates that both IEV and IHV degrade the vehicle driving comfort due to increased unsprung mass. Taking the advantage of high power density of the hydraulic motor, IHV have less unsprung mass when compared with the IEV, which helps to mitigate the vibration problems caused by increased unsprung mass.

Keywords: electric hydraulic hybrid vehicle; in-wheel drive; energy economy analysis; vibration analysis (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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