The primary automotive application on the lock-up principle was Packard's Ultramatic transmission, introduced in 1949, which locked up the converter at cruising speeds, unlocking when the throttle was floored for speedy acceleration or as being the auto slowed. The friction material utilized on the lock−up piston is the same sort https://torque-converter-clutch11853.webbuzzfeed.com/34480943/the-ultimate-guide-to-torque-converter-clutch