Study On The Vehicle Control Strategy And Assembly Parameter Matching For HEV Terminal Tractor

The industry has been innovating since the 21st century. Because of the information technology development, many other industry are all drived to get into a new stage. As a foundation industry, the automotive industry is innovating greatly in this environment. The hybrid electric vehicle is developing fast, and the typical example is Toyota PRURIS car.Hybrid Electric Vehicle is the vehicle that is powered by internal combustion engine and motor together. It makes full use of the two power sources and can optimally match their power, So that It enlarge the overall system efficiency very march. HEV has been researched hotly overseas. At present, the study on the HEV is focus on the car, the bus, the SUV and the truck mostly. For the time being, The article is researched on the"HEV terminal tractor"project, which is set by the Institute of Advanced Technology and the Shekou Terminal Corporation. It concludes the study on the control strategy and the assembly parameters matching. The major contents as follow:(1)Research on the potential market of the HEV of terminal tractor. The terminal tractor is different from the ordinary tractor. It is a special tractor. For it is working in a special environment, which make it is very fit for developing the HEV. Terminal tractor work at low speed, heavy load, few miles and longer waiting conditions. It is exposed on the terminal in summer and it needs large power conditioner. Moreover, the complicated hydraulic pressure system also make the terminal tractor design more different. All the special factors and the characteristics of the HEV indicate that it is meaningful to apply the HEV technology in the terminal tractor. According to present data gathered, it shows that the amount of the terminal tractor needed is about 1500 every year. An OTTAWA tractor is about 700,000 RMB, but a homemade tractor is only 40,000 RMB. The retain number of the tractor will be doubled in 5 to 7 years in the future. It shows that the benefits of the tractor is large in the market. Along with the development of the container commerce, the need for the tractor will be added more quickly too. So the study on the HEV Terminal Tractor is very benefit for the development of the terminal.(2)Research on the HEV Terminal Tractor power train and the assembly parts selecting. This part is about the OTTAWA tractor technology data, which is the basic of the HEV Terminal Tractor. OTTAWA tractor is occupy the leadership in terminal tractor industry. We make use the OTTAWA technology, at the mean while, account for specific situation of the terminal tractor analyze the performance index selecting principle of HEV Terminal Tractor. Then analyze the overall arrangement, fuel converter, motor/controller and energy storage system type selecting, and then we specify the overall configuration as ISG PHEV.(3) According to the previous PHEV and the characteristics of the power train, study on the control system strategy research work, and analyze all of the drivetrain model. In this paper, two PHEV control strategies are included, the logic threshold strategy and the engine optimal operation line control strategy. In this paper, the author studied on the two control strategies separately, and compared their differences, and then draw a conclusion that logic threshold control strategy is more feasible in the fact. But, at the same time the author point out the researching meaning of the engine optimal operation line control strategy. At last, the author analyzed the system of the energy management system which based on the operation system of the embedded software. It can be extended.(4)Combining the above researching, using the simulation software ADVISOR to match the powertrain parameters and researching the simulation results. ADVISOR can be used to estimate dynamic and fuel consumption properties, the exports, appropriate the logic property of the control strategy and optimize matching parameters of the powertrain. Furthermore, the ADVISOR can be developed by the user building SIMULINK model for his special purpose. For comparing the performance of the conventional and the HEV terminal tractor, the author, according to the theory of the automotive, take use of the ADVISOR model to simulate the two types vehicle and analyze the results of the simulation. The results show that the HEV terminal tractor is better than the conventional tractor in performance. At last, the author got the four group technology data information.This thesis's study on the vehicle control strategy and assembly parameter matching for HEV terminal tractor gives the benefit way for the next physical experiment and the sample vehicle study.