| The essay is based on the development of the new style rear drive transmission project of our company, considering the range of the engine displacement of our company and the practical condition , obtained the referenced information in the development of the project by analyzing and researing the transmission of the domestic and the oversea . It provided the academic and realistic base. The essay is focus on the key part of the new style rear drive transmission--the design of transmission system.Under the condition of fulfilling the vested aim value ,the essay begin from the collective project , the main content include analyzing the scheme of the transmission system, analyzing layout form of the gear , analyzing the structure of parts and confirm , choosing the bear style and confirm the support style, at the same time analyzing the scheme of the bear, choosing the main parameter(include the number of the gear ,gear ratio ,the center distance ,axial length ,the diameter of shaft ,gear parameter ,the gear numberdistribution of each shift etc) , the main parameter of the synchromesh and calculate the synchronization time , design the program to calculate the fatigue performance of the gear by Ansys software , checking the intensity of the shaft, checking the life of the bear, calculating the acceleration performance and the economic performance by the Cruise soft . finally ,analyzing the development of the transmission product to provide the theory base .In this essay, adopting two different kind of the final gear ratio to simulate and calculate by AVL Cruise software and analyze the consumption performance of the vehicle ,at the same time, suggesting some control measures and the development direction related with the development process.The essay is a summarization of developing the new rear drive transmission technology study, Combining with the new rear drive transmission project of Dongan company. It has important significative for the further pre-research and developing work.
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