Locking the torque converter in an automatic transmission (automatic transmission) serves the following purposes:
1. Increased efficiency:
* The lock-up mechanically connects the engine and transmission, eliminating slip in the torque converter.
* This reduces energy loss and improves transmission efficiency.
2. Reducing slippage:
* When the torque converter slips, it generates heat, which can cause the transmission to overheat.
* Lockup eliminates slippage, reducing stress on the gearbox.
3. Increase torque:
*Lockup increases the gear ratio between the engine and transmission, increasing the torque delivered to the wheels.
4. Reduced fuel consumption:
* Increased efficiency and reduced slippage result in lower fuel consumption.
5. Improved responsiveness:
*Lockup provides a more direct connection between engine and transmission, resulting in improved throttle response and handling.
6. Increased transmission life:
* Reduced heat generation and slippage extends the life of the transmission and other driveline components.
7. Shifting to higher gears:
*Lock allows the transmission to shift to higher gears at lower engine speeds, resulting in reduced noise and fuel consumption.