An additional process is usually to make use of a variable displacement pump.  If the pump is configured for low displacement, it makes a very low quantity of oil movement, triggering the hydraulic motor(s) to show a lot more slowly but surely. A CVT operates using a technique of pulleys https://gearboxcvt32962.ourcodeblog.com/34348495/new-step-by-step-map-for-gearbox-cvt