| The Metal Belt Continuously Variable Transmission (CVT) is a kind of ideal transmission. Compared with mechanic transmission, it has many merits, such as excellent performance, compact structure, convenient handling and so on. Therefore, it has been used widely. In our company, as one of the key projects, it is being developed and researched.As the key technology to realize the industrialization of Continuously Variable Transmission, optimal matching is absolutely necessary. Study on matching and control strategy of metal pushing V-belt continuously variable transmission of automobile has important theoretical and engineering value. Continuously Variable Transmission can meet the currently demand of drivability, economics and emission etc, and state that the Continuously Variable Transmission is the ideal transmission, will be the developing tendency for the transmission of passenger car.Based on the key projects of the company, the thesis is mainly studied on the optimum economy and performance, and developed optimal matching of the CVT and powertrain. The content is as follow:1. The structure, characteristic, work principle and actuality of Metal Belt Continuously Variable Transmission has been introduced.2. Serve idiocratic field, engine rotate speed adjust idiocratic, engine optimum economy and performance , the ratio control policies of different work conditions are analyzed, matching rule.3. The function and application of AVL Cruise's software is introduced. The modeling and simulating work to the transmission system are accomplished.4. Based on experiment of the Sigma vehicle equipped with Continuously Variable Transmission on the rotating hub test bed, the control rule of speed ratio and clamping force is gotten. |
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