A Study on Performance Simulation and Optimization of an Automatic Transmission
To shorten the AT development cycle and verify the design solution beforehand, the simulation analysis based modular development methods, including the NVH design and lubricating system CFD analysis of AT, are utilized to develop a hydraulic valve body wi
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Abstract To shorten the AT development cycle and verify the design solution beforehand, the simulation analysis based modular development methods, including the NVH design and lubricating system CFD analysis of AT, are utilized to develop a hydraulic valve body with AMESIM and develop an oil pump with FLUENT, and carry out safety reliable design of transmission system with an advanced multi-body dynamic analysis method to optimize key component structure and effectively improve the AT performance. Meanwhile, the application of simulation drive design technology, in which CAE integrated technology is regarded as a key one, can significantly shorten the development cycle of new products and quantify the empirical knowledge and test data in the past development with higher development efficiency. In addition, the application of CAE engineering analysis and prediction technology helps the engineers with simulation analysis and prediction; therefore the product performance and quality can be significantly improved before obtaining type approval and putting into production, thereby reducing design cost and test frequency, as well as shortening the time for products to be put on the market.
Keywords Automatic transmission Simulation analysis analysis Multi-body dynamics analysis
NVH analysis CFD
F2012-C03-023 Y. Chen D. Lou H. Chen (&) F. Zhao Zhejiang Geely Automobile Research Institute Co., Ltd, Hangzhou, China e-mail: [email protected]
SAE-China and FISITA (eds.), Proceedings of the FISITA 2012 World Automotive Congress, Lecture Notes in Electrical Engineering 193, DOI: 10.1007/978-3-642-33744-4_26, Ó Springer-Verlag Berlin Heidelberg 2013
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1 Introduction The simulation technology with CAE as the core is the organic integration of finite element technology and virtual prototype of sports/dynamics technology. CAE simulation analysis functions are mainly for the following aspects [1]: 1. Realize structure analysis from linear and static calculation to nonlinear and dynamic calculation; 2. Make prediction and assessment for structure safety, reliability, service life; 3. Achieve the value and the change rule for the velocity, acceleration, force and the trajectory of mechanism or machine. For the important components for powertrain-transmission, develop various computer models in use of different CAE analysis tools on the basis of fully study for the transmission theory, which greatly promotes the development for transmission research based on the virtual prototype technology. Especially in automatic transmission system development research, it needs more advanced test and simulation technology support. Test and simulation analysis is the essential link in the product development process. Carry on effective and accurate simulation research through the system modeling and analysis, which is a powerful tool to shorten the development cycle and reduce the cost of development [2].
2 Automatic Transmission Simulation Analysis Means Application Situation Numerous domestic and i
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