For the reason that turbine speed lags continuously behind the impeller (pump) velocity, the speed ratio is lower than one. This means that there is friction in the transmission fluid which results in energy losses. The TP sensor indicates the throttle plate angle. If the driving force accelerates to broad-open https://torque-converter-clutch42963.thezenweb.com/the-basic-principles-of-torque-converter-clutch-72019684