CONTINUOUSLY VARIABLE TRANSMISSION PROVIDED WITH A CONTROL DEVICE

摘要

Continuously variable transmission (1) with a control device comprising a pump (10) for supplying a flow of pressurised hydraulic medium to a main line (12) of the device, whereby such medium is drawn from an oil sump (11), a line pressure valve (13) for controlling the pressure level (Pline) in the main line (12), which latter valve (13) discharges a surplus of the pump flow into an auxiliary hydraulic line (14) of the device and a pressure chamber (7, 8). Valve means (161, 181) being provided that are capable of selectively providing a hydraulic connection between the pressure chamber (7, 8) and the auxiliary line (14), or between the pressure chamber (7, 8) and the oil sump (11).