Patent ID: 6997075
Filing Date: 2006-02-14
Classification: F16H,Y10T

Abstract:
1. A motor vehicle comprising an engine, a torque-transmitting device with a first actuating device, a transmission with a second actuating device and gears mounted on rotary shafts, and a control device for controlling said first and second actuating devices; said gears being arranged as gear pairs representing different transmission ratios, each gear pair comprising a fixed gear permanently coupled to one of said shafts and a free gear that can be selectively coupled to and uncoupled from another of said shafts; said control device having a first operating mode in which said first and second actuating devices are activated automatically by the control device based on a plurality of input quantities, and a second operating mode in which the first and second actuating devices are activated through an input given by a driver of the motor vehicle; said second actuating device comprising at least one actuator output element with a synchronizing device, wherein for at least one of said gear pairs said coupling of the free gear is performed by moving the at least one actuator element into a synchronization threshold position and applying a synchronizing force to the at least one actuator output element, wherein further the synchronizing device forestalls said coupling of the free gear until an at least approximate match has been established between respective rpm-rates of the free gear and of said other of the shafts, and wherein said move into the threshold position and said matching of rpm-rates is performed by controlling an actuating force that drives the actuator output element, wherein an adaptation of the synchronization threshold position is performed under the conditions that the motor vehicle is at least close to standing still, the engine is running, a vehicle brake is applied, and a request is present to adapt the synchronization threshold position.