Patent ID: 6945906

Claim:
A control system for a vehicle having a continuously variable transmission that includes a drive pulley connected to an internal combustion engine installed on the vehicle and having a variable effective diameter, a driven pulley connected to drive wheels of the vehicle and having a variable effective diameter, and a transmission belt stretched around the drive pulley and the driven pulley, and transfers power of the engine to the drive wheels while continuously variably changing a transmission ratio by changing at least one of the respective effective diameters of the drive pulley and the driven pulley, and a clutch of a friction type which is provided between the engine and the drive wheels, the control system comprising: transmission transfer torque-setting means for setting a transmission transfer torque to be transferred from the drive pulley to the driven pulley; clutch transfer torque-setting means for setting a clutch transfer torque to be transferred by the clutch; control means for controlling an engaging force of the clutch based on the clutch transfer torque set by said clutch transfer torque-setting means; and bad road-determining means for determining whether or not the vehicle is traveling on a bad road, wherein said clutch transfer torque-setting means reduces the clutch transfer torque such that slippage of the clutch is allowed, when it is determined by said bad road-determining means that the vehicle is traveling on a bad road, and wherein said transmission transfer torque-setting means sets the transmission transfer torque to a larger value as the clutch transfer torque is larger, when it is determined that the vehicle is traveling on a bad road.