CSP摆剪液压离合器温控管理研究

Research on Temperature Control of CSP Swing Shear Hydraulic Clutch

CSP摆剪液压离合器摩擦副高速滑摩时温度过高会引起摩擦片烧蚀和润滑油炭化,因而需要对离合器的工作状态和冷却润滑流量展开研究。依据摩擦学理论和热平衡理论,建立离合器摩擦副温度场数学模型和油液冷却模型。通过对模型的数值求解,获得了摩擦副在不同啮合时间和啮合次数下的温升特性及不同冷却油量下的冷却特性。结果表明:啮合时间和接合次数增大会导致摩擦副温度显著升高;对偶钢片接触面温度场分布规律与接触应力分布规律一致;对偶钢片啮合面终态温度场分布趋于均匀,但高温点总数增多,温度场整体分布较为不均匀;冷却润滑流量在中低热负荷下对摩擦副温升影响低微,而在高热负荷下对摩擦副温升影响显著,但当流量增大到一定值后,增加流量对温升影响微弱。

Aiming at the phenomenon of friction plate ablation and the carbonization of the lubricating oil when the friction pair of the CSP pendulum shear hydraulc clutch passes through the high speed sliding , the author builds the mathematical model of the temperature field of friction pair and the oil cooling model which based on the theory of tribology and thermal equilibrium. In this paper, some temperature management methods have been studied which have an impact on torque transmission and temperature rise characteristic such as engaging time,joint frequency,cooling oil flow and so on. The research indicates that the temperature increased significantly accompanying the rise of engaging time , Joint frequency.Dual steel’s contact surface temperature distribution is non-uniform, and consistent with the distribution of the contact stress distribution . Engaging dual final temperature field distribution tends to be uniform, but the total temperature increased, and the temperature field of the overall distribution is uneven. The cooling lubrication flow has a low influence on the temperature rise of the friction pairs under medium and low heat load, while in high thermal load on the temperature of friction effect significantly. But it effects weakly when the flow rate increases to a certain value.