The 1st automotive application of your lock-up basic principle was Packard's Ultramatic transmission, released in 1949, which locked up the converter at cruising speeds, unlocking once the throttle was floored for fast acceleration or because the motor vehicle slowed. Torque converter equations of motion are governed by Leonhard Euler's eighteenth https://torqueconverterclutch43196.topbloghub.com/40321113/5-simple-techniques-for-torque-converter-clutch