Patent ID: 8840520
Filing Date: 2014-09-23
Classification: F16H

Abstract:
1. A method for shifting a transmission of a motor vehicle, the transmission having a plurality of planetary gear sets, each of the planetary gear sets having first, second, and third members, the method comprising shifting into first gear from one of a reverse gear and neutral, the motor vehicle operable to be propelled in a forward direction in first gear and in a rearward direction in the reverse gear, the method comprising the following steps: applying a torque transmitting mechanism to interconnect a first member of the plurality of planetary gear sets with another of the first, second, and third members or a stationary member, wherein when the motor vehicle is being propelled in first gear or the reverse gear, the torque transmitting mechanism is not applied; after the torque transmitting mechanism is applied, applying a high gain clutch to interconnect a second member of the plurality of planetary gear sets with another of the first, second, and third members or the stationary member, the high gain clutch being one of a dog clutch and a band clutch; and after the high gain clutch is applied, releasing the torque transmitting mechanism.