Fluid coupling between the input shaft and the output shaft by liquid contact

Fluid coupling between the input shaft and the output shaft by liquid contact, work does not exist rigid connection between components. Hydraulic coupling features are: to eliminate shock and vibration; output speed lower than the input speed, two-axis speed difference with the increase of the load; overload performance and good starting performance, Hydraulic hose fittings  load is too large to enter when stalled still rotating shaft, without causing damage to the power machine; when the load decreases, the output shaft speed increases until close to the input shaft speed. Hydraulic coupling transmission efficiency equal to the output shaft speed multiplied by the output torque (power output) and the input shaft speed multiplied by the input torque (input power) ratio. General hydraulic coupling normal operating conditions when the speed ratio above 0.95 can obtain higher efficiency. Because of the characteristics of the fluid coupling working chamber and the pump wheel, and the shape of the turbine are different. If the oil vent fluid coupling, coupler is in disengaged state, can play the role of the clutch.