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Abstract:

To predict the dynamic characteristics of vehicle integrated transmission system, the work states of crucial parts were mathematically described. According to the work principles of hydro-mechanical transmission system, a virtual prototype model of integrated transmission system was constructed based on modular modeling method by synthesizing each component mathematic model. The transition process of start, acceleration and shifting was simulated numerically. The presented model was validated by start process test with the same power condition and operating manner. Contrast of the simulation and test results indicates the modeling method is feasible and the virtual prototype model is correct. 

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