The primary automotive application on the lock-up theory was Packard's Ultramatic transmission, launched in 1949, which locked up the converter at cruising speeds, unlocking in the event the throttle was floored for fast acceleration or as the vehicle slowed. The Charge of the oil stress in the lock-up clutch is https://holdenkkjhe.csublogs.com/40977732/facts-about-torque-converter-clutch-revealed