Patent ID: 8418575
Filing Date: 2013-04-16
Classification: B60W,F16H,Y10T

Abstract:
1. A method of shifting an automatic transmission of a motor vehicle, the transmission having a plurality of gear stages, and shift couplings which can be actuated by means of a transmission actuator to engage and disengage the gear stages, at least one of said shift couplings being equipped with a synchronizing device, the method comprising: exerting a braking action on the transmission input shaft by at least one shift coupling to substantially stop rotation of the transmission input shaft due at least to drag torque; partially actuating the at least one shift coupling to partially engage a gear stage in a first operating state of the motor vehicle while the transmission is in neutral, and fully actuating the at least one shift coupling to fully engage the gear stage when one of a forward gear and a reverse gear is selected.