Patent ID: 7229382

Claim:
An input torque control system of belt-type continuously variable transmission for vehicle, comprising: a primary pulley to which an input torque is inputted; a secondary pulley located on an output side of the transmission; a belt wound between the primary pulley and the secondary pulley; and a shift actuator to change a pressure difference between a primary pulley pressure exerting on the primary pulley and a secondary pulley pressure exerting on the secondary pulley respectively generated with a line pressure as an original pressure, thereby to change a gear ratio of the transmission, wherein: the shift actuator is set in an operating position corresponding to a target gear ratio to change the pressure difference, so that a groove width of each of both the pulleys changes to cause an actual gear ratio obtained by a rotation ratio of the primary pulley to the secondary pulley to be the target gear ratio, the input torque control system further comprising: a memory unit to store pulley information immediately before a stop of a vehicle; a memory judgment section to judge whether or not the pulley information is stored in the memory unit; a torque restricting section to restrict the input torque; and a primary pulley pressure sensor to detect the primary pulley pressure, wherein: the torque restricting section restricts the input torque when the memory judgment section judges that the pulley information is not stored in the memory unit before an initialization operation of setting the shift actuator in a reference position is performed; and the torque restricting section removes the restriction of the input torque when the primary pulley pressure sensor detects that the primary pulley pressure is above a predetermined value after the initialization operation of the shift actuator is finished.