The throttle of Xuan Ying torque converter can lift the car and can't walk.
Torque converter is a kind of hydraulic coupler, which transfers the load of the prime mover (such as internal combustion engine) with rotary power to the rotary driving device. In a vehicle equipped with an automatic transmission, a torque converter connects a power source to a load. It is usually located between the flexible plate of the engine and the gearbox. The corresponding position in the manual transmission is the mechanical clutch.
The main feature of hydraulic torque converter is that it can increase the torque when the output speed is very low, thus allowing the fluid flowing out of the turbine curved blades to deviate from the stator when locked with the one-way clutch, thus providing the function equivalent to a reduction gear. This is beyond the characteristics of simple hydraulic coupling, and it can match the rotational speed without increasing the torque, thus reducing the power.