Research On The Design Theory Of Torque Converter

China's current torque converter manufacturing industry is relatively backward, not only less variety, low production and poor performance, the application of narrow, self-torque converter developed the capacity is relatively weak, most remain in imitation of the stage, in view of of torque converter on a single and relatively fragmented, inadequate in-depth research system. As torque converter for us is a brand new product, it is the automatic transmission of key components, from the design, testing or manufacturing, and other aspects need to start from scratch, technical and difficult. Torque converter through the implementation of the project, the ability of independent innovation to accelerate the construction of a torque converter system development process, design methods, and establish a database based products, gradually improving the torque converter and the formation of independent research and development system .This paper Hongyu company's major technical transformation projects - "torque converter automobile R & D and manufacturing" project, the optical three-dimensional scanners, 3D CAD software and computational fluid dynamics analysis technology, and the combination of hydraulic test Converter theoretical design of the study. Through this research, has the following main conclusion of the study:1) According to the design of the torque converter one dimensional theory, in the reverse design is completed round of impeller and turbine wheel and guided 3D CAD model on the basis of the torque converter to torus section and design methods. And using MATLAB software programming, the basic properties that torque converter. Test results show that one dimensional theory by the results of theoretical calculations and experimental data relative error.2) According to computational fluid dynamics theory, the torque converter flow Road geometric modeling, using commercial software CFX CFD flow within their numerical simulation, internal flow of numerical simulation results of detailed analysis and understanding of their Distribution of more typical are: pump-round flow of exports showed jet / wake structure. Festival of the pressure distribution with the ratio gradually increase the proportion of radial show by the trend. Turbine flow of exports has more uniform and stable characteristics, fluid outflow, with the blade angle relative consistency. Flow into the lead when the round of changes in perspective, than the low-speed, flow directly into the face pressure to produce high-energy low-speed, high-speed ratio, flow into the suction side, the side of a low-pressure wake zone.3) the use of commercial CFD software CFX calculated torque converter of the original features of the original test data and results of the comparison shows that the numerical simulation is more accurate and reliable. Test results show that, by design is practical, not only greatly improving the design level, but also shortened the design cycle.