Invention Grant
US06981931B2 Method and apparatus for providing momentary torque reversal for a transmission having an automated shift system 失效
用于为具有自动换档系统的变速器提供瞬时扭矩反转的方法和装置

Method and apparatus for providing momentary torque reversal for a transmission having an automated shift system
Abstract:
An automated vehicle transmission having a wet clutch and an auxiliary motor that is operatively connected to the transmission to overcome residual torque forces in the wet clutch. Residual torque forces in the wet clutch may prevent disengagement of a gear train and also prevent the transmission from shifting into neutral. A control system determines whether residual torque is resisting the disengagement of the gear train for more than a predetermined time period. According to the method, if a shift is delayed for more than the predetermined time period, the auxiliary motor is actuated to apply an oppositely oriented torque to the transmission gear train to overcome the residual torque and allow the transmission to shift into neutral.
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