采用装载机整机实验的液力变矩器性能匹配指标

Performance Matching Index of Torque Converter Based on Loader Tests

针对液力变矩器的设计、选配过程与整机循环工况载荷的非关联性问题,提出了采用面向整机循环作业工况的液力变矩器性能匹配指标评估液力变矩器部件与整机系统匹配效果的方法。相较于传统液力变矩器静态台架实验,该方法是通过基于整机功率流原理下的液力变矩器的性能实验,在统计整机典型工况下液力变矩器特性参数分布的基础上,将关联整机载荷的速比分布合理有效地应用于液力变矩器与整机的性能匹配指标中。实例应用结果表明,该性能匹配指标能体现整机载荷分布的侧重性,可用于针对具体机型的载荷特点定制化设计和选配液力变矩器。

A method to evaluate the matching effect between a torque converter and the loader system is proposed to solve the non-association among the torque converter design, the selection process, and the load under cyclic working condition. The method uses the torque converter performance matching index and is based on the cyclic working condition of the loader. The method is different from the traditional torque converter static bench test, and is designed and conducted based on the loader power flow route. The ratio distribution related to the load is rationally and effectively applied to the performance matching index between the torque converter and the loader on the basis of parameter distribution statistics of the torque converter under typical working condition. The results of a practical example show that the performance matching index reflects the focus of the load distribution and can be used in the process of customized design and selection of a torque converter for specific load characteristic.