The main automotive application with the lock-up theory was Packard's Ultramatic transmission, introduced in 1949, which locked up the converter at cruising speeds, unlocking in the event the throttle was floored for brief acceleration or because the motor vehicle slowed. At some point, galling from the mating parts occurs, which https://torque-converter-clutch42975.blogsidea.com/40390019/details-fiction-and-torque-converter-clutch