Study on Pivotal Factors to Breaking Torque of Hydrodynamic Retarder

摘要

Hydrodynamic retarder is a kind of auxiliary brake apparatus applied in transport vehicles. The size of brake torque is the key factor of the working effect of hydrodynamic retarder. When the operating pressure which controls system loading is certain, the key factor effecting hydrodynamic retarder's braking torque is the geometric parameter of stator and rotor impellor. Therefore, based on exact full-port modeling, conduct numerical simulations of flow field inside hydrodynamic retarder in different geometrical parameters by CFD, analyze the pressure and speed distribution, braking torque in work chamber with different geometric parameter. Finally, the relation between geometric parameter and braking torque, which can provide a theoretical reference for the design of hydrodynamic retarder, is summarized.