Research On The Matching Between 2.8T Diesel Engine And Transmission System Of Light-duty Off-roader

With the development of automobile industry and the consciousness of environmental protection becoming strengthened, higher demands are brought forward for automobile drive ability, economy and emission performance. In China, manufacturing is divided so detailed that engine and chassis are often made from different factories. So how to fulfill the best compatible between engine and chassis to make the automobile own better drive ability, economical and emission performance become very important in the process of studying the matching of the entire vehicle.Vehicle dynamic,emission and fuel economy performance not only depend on the engine performance, but also on the transmission parameters selection and the power train matching. Even with a good engine performance,it can not make full use of their properties without matching the reasonable transmission system.A reasonable transmission can make the engine often works in the ideal region.It can not only improve the fuel economy performance,reduce the engine abrasion,enhance the engine use life ,but also improve the emission performance. The good matching between the engine system and the transmission system are choosing the appropriate engine,and choosing the appropriate transmission system to make the engine's real work region close to the engine's ideal work region to get the good matching between the dynamic,emission and fuel economy performance of the entire vehicle.This paper takes the improved on the CC6510SC1 Light-duty diesel off-roader,use the common rail injection system on the original mechanical injection system.And optimize the transmission parameters.Because of the simultaneity improving on the both of the engine and transmission,the dynamic,fuel economy and emission performance have been improved obviously in the same time that are contradicted.From the automobile theory, the extent of the power-transmission matched with the vehicle driving cycle has a major influence on the performance of the vehicle. So in order to simulate the performance of the vehicle, two problems must be resolved: the first question is the establishment of the driving cycle, that is to say, the driving cycles of the vehicle must like the vehicle's real world driving condition, the second question is the simulation model of the vehicle should be approached to the real vehicle. To assure the great precision of the model, the software of GT-DRIVE...