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As the rapid growth of the cars all over the world, people are beginning to realize what harm the traditional internal-combustion engines have brought to our environment, and how serious it is. While they are asking for a better living environment, they also ask to reduce more and more exhaust emission. Under the double pressure of the living environment and oil shortage, we are forced to think more about the engines. After a lot of exploring for new fuel, new resources of energy and new power, electric motor car becomes a main choice for more and more people.At present, electric motor cars still can’t catch up with internal-combustion engines because people worry more about the energy storage capacity, the prize and the life span of the batteries. Limited by so many technical problems, the prospect for the industrialization of electric motor cars is not so good.Hybrid electric motor car is a new kind of vehicle which has two power devices (internal-combustion engines and electric motor). By the working of the energy actuating device, a hybrid electric motor car can reach the best energy distribution, the lowest exhaust emission and the least use of the energy. It not only has the advantages of the internal-combustion engines, but also has every advantage that an electric motor car owns. So it is the most economic vehicle.In this thesis, first, we introduce the present situation of the hybrid vehicle in our country and abroad. Then, take SX5256GJBJR364C as the basic model, we figure out the economic guide line of the fuel and the power, put forward a new designed vehicle SX5256GJBJR364C(PHEV) and work out its new guide line of the fuel and the power. By analyzing all kinds of the power devices of the hybrid vehicles, combine to the technical requirement of the SX5256GJBJR364C(PHEV), for the hybrid powered heavy trucks, we make the technical proposal, the drive design, different choices of the power distribution, the star-up condition, driving conditions, energy recuperation and control strategy in speed reducing etc.---the general study and design of the control system.
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