The 1st automotive application in the lock-up principle was Packard's Ultramatic transmission, introduced in 1949, which locked up the converter at cruising speeds, unlocking if the throttle was floored for rapid acceleration or as the auto slowed. Picking in between a clutch plus a torque converter depends on the car https://torqueconverterclutch64185.newsbloger.com/34607533/5-simple-techniques-for-torque-converter-clutch