Patent ID: 7207920
Filing Date: 2007-04-24
Classification: F16H,Y10T

Abstract:
1. A control device for controlling a V-belt CVT which is connectible to a vehicle engine and comprises a primary variator and a secondary variator, the control device having at least one sensor which generates an electronic measured value, said at least one sensor being selected from a group of sensors comprising a primary speed sensor, sensing the engine speed or a speed proportional thereto, a secondary speed sensor, sensing the speed of the secondary variator or a speed proportional thereto, a power sensor generating a measured value related to the torque of an output drive shaft connected to the secondary variator, and a throttle sensor and an electronic control unit for controlling the V-belt CVT based on said measured values, wherein the control device further comprises a clamping power actuator which is connected to the control unit and connectable to the primary variator, wherein the clamping power actuator is arranged to set the V-belt clamping power of the primary variator, wherein the control unit's control of the V-belt CVT comprises control of the clamping power actuator, and wherein the control unit is arranged to command the clamping power actuator to switch on the primary variator at a settable first engine speed and to set the actuator to maximum clamping power at a settable second engine speed.