Abstract
This paper presents a numerical study of the effect of the transmission configuration on the energy consumption of an electric vehicle. The first part of this study is related to a vehicle simulation model that takes into consideration vehicle resistances such as aerodynamic, rolling and inertial resistance as well as the traction force. The model was then validated by means of vehicle acceleration time, from 0 to 100 km/h in the case of a single-speed gearbox. Vehicle power demand and electrical energy consumption were then evaluated over three standardized test cycles: WLTC-Class 3, NEDC and FTP-75. For each cycle, two cases were studied: a single-speed and dual-speed gearbox. Very different power demand was observed between the cycles in terms of maximum and average driving power. The most power-demanding cycle was WLTC, while NEDC was less power demanding. However, the specific driving energy per kilometer was very similar for NEDC and FTP-75, as it respectively accounted to 0.118/0.116 kWh/km and 0.117/0.115 kWh/km. WLTC led to a higher specific consumption of 0.127/0.124 kWh/km. A dual-speed gearbox led to better efficiency, within the range of 1.7% to 2.4%. The higher value was obtained for highly dynamic WLTC.
Highlights
A decrease in the availability of the fuel has led to the basic motivation for the creation and studying of electric and hybrid vehicles with electric drivetrains
We studied the driving energy demand for the vehicle over worldwide light-duty test cycle (WLTC), NEDC and FTP test cycles
We aimed to assess the different driving dynamics of each cycle according to the specific energy consumption of an electric vehicle
Summary
A decrease in the availability of the fuel has led to the basic motivation for the creation and studying of electric and hybrid vehicles with electric drivetrains. The major difference in electric vehicles is that their driving systems consist of a control system and motor system as well as energy storage devices such as batteries, a supercapacitor or flywheel [1]. The maximum speed that can be obtained for EVs strongly depends on the performance of the electric motor as well as the efficiency of the converters and their controller. The efficiency of the EVs depends on the differential, transmission components and the shaft. One of the major components related to the power and consumption of vehicles is the transmission system. There are three basic types of vehicle transmission: automatic, manual and continuous variable [2]. The efficiency of the manual transmission is higher, but the automatic and continuous variable transmissions are more comfortable for usage
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
