The main automotive application of the lock-up theory was Packard's Ultramatic transmission, released in 1949, which locked up the converter at cruising speeds, unlocking once the throttle was floored for speedy acceleration or as the motor vehicle slowed. Torque converter equations of motion are governed by Leonhard Euler's eighteenth century https://jeffreyqqolj.blogcudinti.com/34089675/the-fact-about-torque-converter-clutch-that-no-one-is-suggesting