1, the torque converter
2. Body
A non-rigid torque converter to a liquid as the working medium is one type of hydraulic transmission . The picture shows the torque converter, which has a closed working chamber, the liquid circulation within the chamber, wherein the pump impeller, a turbine, and a stator respectively associated with the input shaft, the output shaft and the housing. When the power machine (engine, electric motor, etc.) driven by the input shaft, the centrifugal fluid pump turns out sequentially through the turbine, stator and then return pump wheel, cycle to cycle flow. Pump impeller of the input shaft mechanical energy to the liquid. High-speed rotation of the turbine driven liquid, energy is transmitted to the output shaft. It leaves the torque converter by the interaction of the liquid with the moment of momentum change to transmit torque. The main features different from the torque converter is a fluid coupling with a fixed guide wheel. Effect of the liquid flow guide wheel output torque of the torque converter can be higher or lower than the input torque, which is called a torque converter. Input torque and the output torque ratio of said torque ratio, the zero speed when the torque converter output speed is zero coefficients typically about 2 to about 6. Torque ratio with increasing output speed decreases. Between the input shaft and the output shaft of the torque converter is activated by the fluid contact, no rigid connection between the working member. Torque converter characteristics are: relieving shock and vibration, good starting performance and overload properties; speed of the output shaft may be greater or less than the speed of the input shaft, the rotational speed difference between the two shafts for transmitting torque with different sizes; the good performance of the automatic transmission, the output speed is increased automatically load decrease, and vice versa automatically rise; power machine to ensure a stable work area, transient load changes substantially not reflected power machine. In the vicinity of the torque converter efficiency is high rated condition, the maximum efficiency of 85 to 92%. The impeller is the core of the torque converter. Its type and the arrangement position and shape of the blade, has a decided effect on the performance of the torque converter. Some have more than two of the torque converter turbine wheel or the pump wheel turned so as to obtain different properties. The most common is the normal rotation (steering input shaft and the output shaft of the same), a single stage (only one turbine) of the torque converter. Both the coupler and the torque converter performance characteristics called integrated type torque converter, the guide wheel may be fixed, for example, beThe torque converter can rotates together with the pump wheel. In order to work properly the torque converter, to avoid cavitation and to ensure the cooling, we need to have some secondary oil pressure supply system and a cooling system.
The torque converter
3 Characteristics
torque converter characteristics: greatest feature is flexible connection, such power transmission may serve two functions, first, when a smooth start from standstill to a low speed; second, during acceleration, when a large power output, play a role to increase the torque.