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POWERTRAIN WITH A CONTINUOUSLY VARIABLE TRANSMISSION FOR AN ELECTRIC VEHICLE AND METHOD FOR OPERATING SUCH POWERTRAIN
POWERTRAIN WITH A CONTINUOUSLY VARIABLE TRANSMISSION FOR AN ELECTRIC VEHICLE AND METHOD FOR OPERATING SUCH POWERTRAIN
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机译:电动汽车的具有连续变速传动装置的动力传动系统和操作这种动力传动系统的方法
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摘要
The invention relates to a powertrain for a fully electric vehicle comprising an electric machine (1), a driven wheel (2) and a gearing (3) that is arranged between the electric machine (1) and the driven wheel (2) and that provides a driving connection there between, which gearing (3) includes at least a first speed reduction stage (31) providing a fixed first speed ratio, a variator unit (40) providing a variable speed ratio and a second speed reduction stage (32) providing a fixed second speed ratio between an input gear wheel (35) and an output gear wheel (36) thereof, whereof the input gear wheel (35) rotates as one with the output shaft of variator unit (40). According to the invention, a maximum overall speed ratio provided by the gearing (3) between the electric machine (1) and the driven wheel (2) amounts to at least 20:1.
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