The main automotive software on the lock-up principle 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 swift acceleration or because the motor vehicle slowed. Torque converters are used in automatic transmissions because they allow https://torque-converter-clutch64185.blogdal.com/34429253/torque-converter-clutch-for-dummies