Fluid coupling

Fluid coupling fluid as the working medium in a non-rigid couplings, also known as hydraulic couplings. Hydraulic coupling of the pump wheel and turbine liquid can form a closed working chamber circulating pump wheel mounted on the input shaft, turbine mounted on the output shaft. Power machine (engine, electric motor, etc.) to drive the input Hydraulic ferrules rotates, the liquid is thrown centrifugal pump wheel. This high-speed fluid into the turbine after the turbines rotate the energy obtained from the pump wheel to the output shaft. Finally liquid return pump wheel, forming a cycle of flow. Hydraulic coupling by the liquid and the pump wheel, turbine blades interaction of the change in angular momentum transfer torque. Its output torque equal to the input torque minus the friction torque, so that its output torque is less than the input torque constant.