多锥构型摩擦元件带排扭矩影响因素分析

为了降低变速装置的带排扭矩功率损失，以典型三锥摩擦副为研究对象，考虑表面张力和表面构型的影响，建立多锥构型摩擦元件带排转矩分析模型，通过数值方法讨论了变速装置中润滑油黏度、分离间隙、润滑油流量、多锥摩擦元件构型参数等对带排扭矩的影响.研究结果表明随着相对转速的增大，带排扭矩先增大后减小，带排扭矩存在最大值.润滑油的黏温特性、润滑油流量、分离间隙、摩擦元件锥角对带排扭矩的影响较大.设计不等锥角构型可以降低多锥构型的带排扭矩. 

Drag Torque Model for Conical Friction Element Based on the Analysis of the Influencing Factors

Conical friction element is a novel friction structure, being capable of improving the torque transfer capability of friction element. In order to reduce the drag power loss of strap transfer mechanism, taking three-cone friction element as example and considering the effects of surface tension and surface structure, a drag torque analysis model was established for conical friction element. The influences of lubricating oil viscosity, friction element separation gap, lubricating oil flow rate and conical structure parameters on drag torque of the conical friction pairs were studied based on numerical analysis method. The results show that the drag torque is increased until reaching maximum value and then decreased afterwards with the relative rotating speed. The effects of viscosity-temperature characteristics of lubricating oil, lubricating oil flow rate, friction element separation gap and cone angle on the drag torque are significant. Unequal cone angle structure can reduce the drag torque of conical friction element.