综合式液力变矩器内特性的计算与分析

Calculation and analysis of internal characteristics of torque converter-coupling

根据综合式液力变矩器外特性的试验结果,应用比例分配法对其内特性进行了计算。在确定了循环流量的基础上,计算了典型工况下各工作轮上的损失能头及静压力分布。以4L60ED245型综合式液力变矩器为实例,对内特性的计算结果与束流理论的计算结果进行了比较。结果表明:按比例分配法计算出的结果精度较高,且两种计算方法计算出的进、出口压力变化趋势相似。

The internal characteristics of the torque converter were calculated from its tested external characteristics by the method of proration. The distributions of energy loss and static pressure in each impeller under the typical working conditions were calculated after determining the circulated fluid flow. Taking the type of 4L60ED245 torque converter-coupling for an example, the internal characteristics calculated by the suggested method were compared with those calculated by the one- dimensional theory, showing that the precision of the results calculated by the method of proration is higher, while the pressure variation trends at the inlet and exit calculated by both methods are similar.