The control of the oil strain while in the lock-up clutch is done via two valves: the relay valve as well as the sign valve. In this type of arrangement the signal valve controls the force on one side in the relay valve, which controls the stress inside the lock-up https://jaidenovusp.madmouseblog.com/14739148/helping-the-others-realize-the-advantages-of-torque-converter-clutch