基于汽车液力变矩器数值仿真研究

Numerical Analysis on the Flow Field of Torque Converter

研究汽车液力变矩器动力性能优化问题。液力变矩器作为自动变速器的液力传动元件可以实现汽车的自适应性无级变速稳定性控制等。传统的液力变矩器动力系统模型达不到自适应性能要求。为了解决上述问题,根据液力变矩器的实际工作状况,提出了一种新的液力变矩器汽车动力系统建模现代设计方法。可有机结合修正能头损失的束流理论,忽略掉非重要因素,以简化建模复杂程度。在假设的基础上建立流道的三维仿真模型,然后导入到划分计算网格中,进行仿真,结果表明,采用流场数值仿真技术,大大提高了模型的设计精度和设计效率,具有一定的实际应用价值。

As hydraulic transmission components of automatic transmission in cars, hydraulic torque converter has been widely used. The traditional numerical simulation modeling methods of hydraulic torque converter are hard to simulate car dynamic system. In order to solve the problem, according to the actual working condition of hydraulic torque converter, the paper puts forward a new kind of car based on the modeling modern design method of hydraulic torque converter dynamic system. This method can be modified with the organic combination with the beam theory head loss, and ignores the important factors to simplify modeling complex degree. On the basis of this assumption, first UG 3d geometric model is use d to establish the simulation model of port, which is introduced to the divided grid- ding calculation. The simulation result indicates that the flow field numerical simulation technology greatly improves the model design precision and the design efficiency.