Influence of Charging Oil Condition on Torque Converter Cavitation Characteristics

作     者：Cheng Liu Meng Guo Qingdong Yan Wei Wei Cheng Liu;Meng Guo;Qingdong Yan;Wei Wei

作者机构：School of Mechanical EngineeringBeijing Institute of TechnologyBeijing 100081China Chongqing Innovation CenterBeijing Institute of TechnologyChongqing 401122China Advanced Technology Research InstituteBeijing Institute of TechnologyJinan 250307China 

出 版 物：《Chinese Journal of Mechanical Engineering》 (中国机械工程学报（英文版）)

年 卷 期：2022年第35卷第3期

页      面：236-249页

核心收录：

学科分类：08[工学] 080401[工学-精密仪器及机械] 0804[工学-仪器科学与技术] 081102[工学-检测技术与自动化装置] 0811[工学-控制科学与工程] 

基　　金：National Natural Science Foundation of China(Grant Nos.51805027,51475041) Beijing Institute of Technology Research Fund Program for Young Scholars(Grant No.3030011181804) Vehicular Transmission Key Laboratory Fund 

主　　题：Torque converter Cavitation CFD Transient flow 

摘      要：Cavitation inside a torque converter induces noise,vibration and even failure,and these effects have been disregarded in previous torque converter design ***,modern torque converter applications require attention to this issue because of its high-speed and high-capacity ***,this study investigated the cavitation effect on a torque converter using both numerical and experimental methods with an emphasis on the influence of the charging oil feed location and charge *** fluid dynamics(CFD)models were established to simulate the transient cavitation behaviour in the torque converter using different charging oil pressures and inlet arrangements and testing against a base case to validate the *** CFD results suggested that cavitating bubbles mainly takes place in the stator of the torque *** transient cavitation CFD model yielded good agreement with the experimental data,with an error of 7.6%in the capacity constant and 7.4%in the torque *** the experimental and numerical studies showed that cavitation induced severe capacity degradation,and that the charge pressure and charging oil configuration significantly affects both the overall hydrodynamic performance and the fluid behaviour inside the torque converter because of *** the charge pressure and charging the oil from the turbine-stator clearance were found to suppress cavitation development and reduce performance degradation,especially in terms of the capacity *** study revealed the fluid field mechanism behind the influence of charging oil conditions on torque converter cavitation behaviour,providing practical guidelines for suppressing cavitation in torque converter.