Parallel Hybird Vehicle Handover Process Quality Research

Along with our country economy development continuously in the process of globalization and the improvement of national income, the domestic automobile market has been developing rapidly, the number of cars and popularity rate rises quickly, this also means that the pollution and energy consumption is becoming more and more serious. The pollution and energy crisis under the dual pressure, people begin to search new outlet. Now the new energy vehicles as public universities and various automotive enterprises the focus of the study, strengthen the independent innovation, the formation of new competitive advantage. New energy vehicle range is very wide, roughly divided into pure electric vehicles, fuel cell vehicles, alternative energy vehicles, solar car, alcohol fuel automobile. Hybrid electric vehicle as the traditional vehicles and pure electric vehicles in the transition, it is future20years research and development of a mainstream.In this paper, based on the research object of parallel hybrid electric vehicle for switching mode quality research, aiming at parallel hybrid electric vehicle mode switching process, put forward a mode switching quality evaluation, focused on the in that reduced fuel consumption and emission under the premise of the mode switching process dynamic coordinated control.Vehicle dynamic coordination and control of hybrid vehicle is one of the key technologies, which mainly refers to the vehicle’s energy management and energy management strategy needs to be switched hybrid cars work mode in order to realize the energy management strategy for hybrid electric vehicle drive system for dynamic coordinated control. To reduce the fuel consumption and emission reduction energy management objective, this paper analyzes several energy control strategy, according to motor power is smaller than the energy of braking energy, in the subsequent cycle can not be achieved on the recovery of braking energy to this problem, put forward based on the power threshold curve of SOC reduction strategies, on the change of SOC range played a stabilizing effect.Then the paper switching mode the whole process and the whole transmission system dynamics analysis and energy calculation model, get the transmission system for dynamic coordination of the core technology. Because of this switching mode are in the clutch engagement process, and then the clutch engaging process were studied and dynamic analysis, obtained the rules of engagement. Finally, through dynamic coordination and control of hybrid vehicle and hybrid vehicle through dynamic control mode switching process simulation, simulation can be seen from the graph, the mode switching process without dynamic control is volatile, and through dynamic coordinated control of the transmission input torque vary a lot, shock decreased, improve the comfort of passengers, to switch the quality has been improved.