The main automotive application with the lock-up basic principle was Packard's Ultramatic transmission, introduced in 1949, which locked up the converter at cruising speeds, unlocking when the throttle was floored for quick acceleration or because the car or truck slowed. The TP sensor signifies the throttle plate angle. If the https://torqueconverterclutch82692.theideasblog.com/34468545/torque-converter-clutch-for-dummies