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A detailed description of the torque converter
Jun 29, 2017

A kind of non rigid torque converter with liquid as working medium is one of the forms of hydrodynamic transmission. The picture is a hydraulic torque converter, which has a closed working cavity, in which the liquid circulates in the cavity, wherein the pump wheel, the turbine and the guide pulley are connected with the input shaft, the output shaft and the shell body respectively. Engine (internal combustion engines, motors, etc.) drive the input shaft rotation, liquid from the centrifugal pump in turn, after the turbine, the guide wheel back to the pump, the cycle of circulation flow. The pump wheel transmits the mechanical energy of the input shaft to the liquid. The high speed liquid pushes the turbine to rotate and transmit energy to the output shaft. The torque converter is produced by the interaction between the liquid and the blade to produce the moment of momentum. The hydraulic torque converter is different from the hydraulic coupler's main characteristic is that it has fixed guide wheel. The guiding effect of the guide wheel on the liquid makes the output torque of the torque converter higher or lower than the input torque, so it is called a torque converter. The ratio of the output torque to the input torque is called the torque Factor, and the 0-speed torque coefficient of the output speed is usually about $number. The torque coefficient decreases with the increase of the output speed. The input shaft of the hydraulic torque converter is connected with the output shaft by liquid, and there is no rigid connection between the working components. The characteristics of the torque converter are: can eliminate the impact and vibration, overload protection performance and good starting performance; the rotational speed of the output shaft can be greater than or less than the speed of the input shaft, the rotational speed difference of the two axes is different with the size of the transmitting torque, and has good automatic speed-changing performance, the output speed will automatically drop when the load increases, conversely, the automatic rise of the engine is ensured, and the transient change of the load will not be reflected on the power machine. The hydraulic torque converter has high efficiency near the rated working condition and the maximum efficiency is 85. The impeller is the core of the hydraulic torque converter. Its type and layout position and the shape of the blade are decisive for the performance of the torque converter. Some hydraulic torque converter has more than two turbine, wheel or pump wheels, in order to obtain different performance. The most common is the forward-turn (output axis and input axis to the same), Single-stage (only one turbine) hydraulic torque converter. Both torque converter and coupler performance characteristics of the integrated hydraulic torque converter, such as the wheel can be fixed, can also rotate with the pump with the hydraulic torque converter. In order to make the hydraulic torque converter work properly to avoid cavitation and ensure heat dissipation, the auxiliary oil supply system and cooling system need to have a certain supply pressure.