Patent ID: 6698304
Filing Date: 2004-03-02
Classification: B60W,B60Y,F16H,Y10T

Abstract:
A method for control of a gear step change in a vehicle having a dual clutch transmission (2) actuatable by a prime mover (4), a plurality of gear steps in which a first dividing gear (6) and a second dividing gear (10) selectively operatively coupled with said prime mover (4) respectively by a first clutch (8) and a second clutch (12), both dividing gears (6, 10) having a common output (14), each dividing gear (6, 10) having a plurality of ratio steps, at least two consecutive gear steps of said dual clutch transmission (2) not associated with the same dividing gear (6, 10), wherein upon demand for a double downshift, a gear step change takes place within the same dividing gear (6) without the other dividing gear (10) transmitting, during the gear step change, torque from said prime mover (4) to said output (14), and wherein the torque delivered by said prime mover (4) during the gear step change is used for acceleration of rotary masses downstream of said prime mover.