Patent ID: 7121976

Claim:
A control system for a motor vehicle in which torque from a driving power source is transmitted to a tire through an input shaft and an output shaft of a transmission which includes a plurality of gears, a plurality of dog clutches for transmitting torque from said input shaft to said output shaft and at least one friction engagement device, wherein engagement of the gears with the dog clutches forms torque transmission paths from said input shaft to said output shaft, and wherein, when the engagement of said gears with said dog clutches is switched from a first engagement to a second engagement, said friction engagement device transmits the torque of said driving power source from said input shaft to said output shaft, said control system comprising: thermal state determining means for determining a thermal state by detecting or estimating a thermal state of said friction engagement device; and driving power source torque control means for controlling the torque of said driving power source according to a parameter representing the thermal state of said friction engagement device determined by said thermal state determining means.