The Parameters Matching Design And Research On PHEV Driving System

With the development of the industry,the vehicle is becoming more and morecloser to people’s life and has great linked with people’s life.Though the vigorousdevelopment of the auto industry brought a great convenience to people’s life, but theenergy consumption and environmental pollution are to be solved imperatively.Atpresent, there are two main methods to solve such problems.One way is to improve thefuel efficiency of automobile engine.The higher amount of fuel efficient, the betterrunning ability,and the lower world fuel energy consumption.The second method is toresearch and develop all kinds of new energy vehicles, looking for the consumption ofrenewable resources to replace increasingly oil reserves, such as hybrid electric vehicle,pure electric vehicle, fuel cell car, hydrogen car. The technology of hybrid electricvehicle has a certain development level,which is considered to be one of the effectivestrategies to solve the world energy crisis.In this paper,the research object is city car,it includes the study on the simulationmodel,parameter matching and optimization of hybrid system.The main content are asfollows:(1)First of all,summarize the background and significance of the hybrid electricvehicle presently,discuss the development of domestic and international situation ofHEV in detail and points out the importance and the necessity of study on HEV.In theend,analyze the status of parameter matching and optimization of HEV and bringforward that reasonable optimization for the hybrid system parameters is a valuablestudy.(2)Introduce the different hybrid drive model of the basic composition, structure,principle and characteristics in detail.According to the different characteristics of thedifferent drivers and HEV setting conditions and other related factors determine thehybrid structure in this paper.At last,doing the work with the hybrid structure drivestructure layout setting.(3)With reference to some existing domestic models, according to the runningconditions of city vehicles, as dynamic and economical efficiency for the starting pointis proposed in parallel hybrid design goals, and parameter design of key components inthe drive system (4)Analyze the current control strategy be used in HEV in detailed,and put forwardthe vehicle control strategy which based on static logic threshold control model.(5)Establish the simulation model of HEV which based on Cruise,under typicalworking NEDC doing simulation experiments to analyze the vehicle’dynamic andeconomic performance.At last,optimizing the parameters of HEV control strategy,anduse the Isight and Cruise software to optimize the transmission ratio and the mainreduction ratio,for the purpose of improving the vehicle’dynamic and economicperformance.