With the increase of turbine speed, the torque decreases linearly. After passing the critical point, the number of revolutions of the turbine and the pump turbine are equal. In addition to driving the turbine to rotate, the oil in the pump turbine has no residual energy and the oil flow angle becomes small. The oil returned from the turbine rushes to the back of the turbine. Since the one-way clutch is only responsible for locking the left turn, not the right turn, when the oil impacts the back of the stator fixed on the one-way clutch, the stator starts to rotate, and the time when the stator starts to rotate is called the critical point. The critical point is the condition of moment change, and the critical point is the accidental condition.
?? the torque ratio of hydraulic torque converter decreases with the increase of turbine speed and increases with the decrease of turbine speed. That is to say, it increases with the increase of driving resistance torque. In the low-speed area, the torque can be automatically changed according to the driving resistance. The transmission efficiency of hydraulic torque converter increases with the increase of turbine speed. Even operating conditions occur only when the pump turbine and turbine speeds are relatively close. Even number operating conditions are only applicable to high-speed driving of the vehicle, and there are no even number operating conditions at low speed.
What is the composition and working principle of the hydraulic torque converter?
?? as the torque increasing device, the guide wheel remains stationary under the condition of torque change and starts to rotate under the combined condition. If the stator rotates under torque conditions, the one-way clutch slips. The stator must rotate under combined conditions, so it does not rotate, indicating that the one-way clutch has hysteresis fault.
?? the hydraulic torque converter is composed of pump wheel, turbine and guide turbine. It is installed between the engine and transmission and uses hydraulic oil as the working medium to transmit torque, torque, speed and clutch. Non rigid torque converter with liquid as working medium is one of the types of hydraulic transmission. Yjh340 torque converter has a closed working chamber in which the liquid circulates and the pump wheel. The turbine and stator are connected to the input shaft respectively. Output shaft and housing. When the power machine drives the input shaft to rotate, the liquid flows out of the centrifugal pump wheel and through the turbine. The guide wheel returns to the pump wheel and circulates. The pump wheel transmits the mechanical energy of the input shaft to the liquid. The high-speed liquid drives the turbine to rotate and transfers energy to the output shaft. Hydraulic yjh340 torque converter transmits torque through the interaction between liquid and blade. The main feature of hydraulic torque converter different from hydraulic coupling is that it has a fixed guide wheel. The deflection roller can change the output torque of the liquid, so it is called the torque converter. The ratio of the output torque to the input torque is called the torque coefficient. When the output speed is zero, the zero speed torque coefficient is usually about 2~6. The torque coefficient decreases as the output speed increases. The input shaft and output shaft of the hydraulic yjh340 torque converter are connected by liquid, and there is no rigid connection between the working parts.
