S (stall point): In this particular position the turbine velocity is zero and the impeller is rotating; the efficiency inside the stall place is minimum amount, all-around fifty%, which suggests that half of the power coming through the engine is lost by way of friction and dissipated as warmth; at https://torque-converter-clutch41889.blogdigy.com/what-does-torque-converter-clutch-mean-51321856