Controller for setting continuously variable loop gearbox ratio forms control signal depending on primary pressure value computed from operating parameters, required on drive side to set desired ratio

摘要

The gearbox has a drive side (1) and a driven side (2) coupled by a looping stage (10) and a primary valve (40) for setting the ratio. The controler generates a control signal (Ip) for causing adjustment of the ratio depending on the operating parameters of the vehicle. The control signal is formed depending on a value for primary pressure computed from the operating parameters and required on the drive side to set a desired ratio. AN Independent claim is also included for the following: (a) a method of a continuously variable loop gearbox ratio.