Comparing of the effects of CVT and DCT on the EVs including braking energy recovery

Publication Type:
Conference Proceeding
Citation:
8th Australasian Congress on Applied Mechanics, ACAM 2014, as Part of Engineers Australia Convention 2014, 2014, pp. 942 - 950
Issue Date:
2014-01-01
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We seem going through a tough time. The remaining fossil fuel is limited and the price is higher and higher. Tens of millions brand new vehicles go into markets every year. This causes serious environment problem, especially in some developing countries. Electric vehicles (EVs), as the most promising environment friendly transportation, attract significant attention of OEMs and researchers when the using of traditional fossil fuel based vehicles are restricted by many metropolis to alleviate air pollution and reduce the reliance on imported crude oil. However the consumer acceptance of EVs is still restricted by the limited range in comparison to its counterpart-internal combustion engine vehicles. More and more people attempt to integrate various transmission systems to EVs to extend the mileage and improve the performance of electric vehicle. Continuously Variable Transmission and Dual Clutch Transmission are two popular options currently. Their characteristics are considered more suitable than other transmission systems to the powertrain of EVs. In this paper, two models have been designed to simulate the city cycle performance for EVs equipped with CVT and 2-Speed DCT respectively. A comprehensive comparison has been made to discuss the advantages and disadvantages of two different multispeed transmission system applied on the EV, which includes both propelling and regenerative braking circumstance considering the structure complexity, cost and efficiency.
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