Patent ID: 7429233

Claim:
A method for shifting from a source gear to a target gear in a twin clutch transmission of a motor vehicle, wherein the twin clutch transmission has a plurality of gears distributed between two transmission input shafts, with sequentially directly successive gears being assigned to different transmission input shafts, and wherein in each case one upshift and downshift threshold, with a limit value applicable for the respective upshift or downshift, defined as a function of a throttle pedal position, for each possible sequential gear change is stored in a control unit as a corresponding vehicle speed value; the method which comprises: measuring a variable vehicle speed and a variable throttle pedal position as the motor vehicle is traveling; in case of a nominal downshift from a source gear to a lower gear, determining a target gear by initially comparing a current vehicle speed with the limit value of a respectively closest downshift threshold, or of adjacent downshift thresholds in the downshift direction, until the current vehicle speed is higher than the respective limit value of a most recently checked downshift threshold; if, at a most recently checked downshift threshold, the higher gear of the downshift threshold is assigned the same transmission input shaft as the source gear, comparing the current vehicle speed with the limit value of an upshift threshold that corresponds with the most recently checked downshift threshold, and, when the current vehicle speed is higher than the limit value of the upshift threshold, selecting the higher gear of the upshift threshold as the target gear, but if the current vehicle speed is lower than the limit value of the upshift threshold, selecting the lower gear of the upshift threshold as the target gear.