【摘要】 为解决面向工程机械多机种、多工况设计条件的液力变矩器产品的快速响应设计问题,提出基于相似循环圆与重塑叶栅的液力变矩器性能优化设计方法。首先,面向多机种设计条件,以变矩器一元束流理论与液力传动相似理论为基础,提取设计对象整机的发动机外特性参数,构建参照基型液力变矩器循环圆的相似循环圆设计;其次,面向多工况设计条件,以水滴翼型模型为基础,提取整机实验工况特征,构造基于工况积分加权的性能评价模型,以叶栅结构中叶片角为变量,实现满足整机多工况的液力变矩器效率最大化设计。以双涡轮液力变矩器为对象,满足了不同功率整机与不同工况的变矩器的高性能设计,为液力变矩器系列产品的正向设计提供了一种新的思路。更多还原

【Abstract】 To resolve the problem of rapid response design of hydraulic torque converter for multiple machine types and working conditions of engineering machinery,a method of optimization design of hydraulic torque converter performance based on similar circle of circulation and reshaped cascade was proposed. Firstly,based on the multiple machine types conditions and the univariate beam theory of torque converter and the similarity theory of hydraulic transmission,the external characteristic parameters of the whole engine as the designed object were extracted,and the similar circle of circulation design of the basic type of hydraulic torque converter was constructed. Secondly,based on the water drop airfoil model,the characteristics of experimental working conditions of the whole machine were extracted,and the performance evaluation model based on the integral weighting of working conditions was constructed. The blade angle in the cascade structure was taken as variables to realize the maximization design of the efficiency of the hydraulic torque converter,satisfying the multiple working conditions of the whole machine. In this paper,double-turbine hydraulic torque converter is taken as the object to meet the high performance design of torque converter with different power and different working conditions. This method provides a new idea for the forward design of hydraulic torque converter series.更多还原