Study On The Engineering Design Method For Hybrid Vehicles

During the 10^th five years, The National Technical department of china had past Through the high Tech"863"plan, aiming at Enhancing The Research Investment on Hybrid Electric vehicle(HEV) and Pure Electric vehicle(PEV), Major Automobile Manufacturing Factory and school all had Participated in it just like the Motor and Battery Suppliers. During the 11th five years, The plan had carried on the Industrial production of HEV. At the same time, The Demonstration movement of Olympic games Clean energy automobile and The demonstration plans of"ten city thousand cars"had accelerated the speed of Industrial production of HEV. But there had Different understanding of Industrial production of HEV in Domestic. In high oil price time, It is a big problem of how to utilize the Superiority of HEV when we Develop the products which suit the market.Under such background, The paper did quite comprehensive research on how to carry on the configuration and the design parameters of full hybrid electric vehicle named of liberation under the topic of 12^th five years"863"plan. The innovation of this paper is it elaborates the design methods on this HEV under product engineering restrain. In view of producer's technology and project ability, this paper elaborates the methods on how to choose the configuration and how to match the design parameters. And it also summarizes the design method on how to match the power unit of this vehicle based on the system's efficiency. Under different city cycles, it has carried out the optimization of control parameters based on the system's efficiency. Based on the results of optimization, it improved the control strategy. The paper has the following four aspect content, which is1st, The method of how to choose the hybrid power unit based on production.2nd, The match method of how to design power system using power demand under the operating mode.3rd, The development of control strategy based on forward simulation platform and the confirmation of the vehicle's fuel efficiency.4th, In view of the specific operating mode, the paper proposed the design method based on effective area.Based on the above research content, this paper mainly makes following progress, which isFirstly, the paper has confirmed the validity of the configuration choice method using the results of analysis. And with the development of the FAW full HEV, it completes the configuration choice and the parameter determination of the essential unit.Secondly, applies the forward simulation platform, it carries on the control strategy of the HEV. Furthermore, this paper proposed the idea of how to save gas and oil, which is using"insert and electrify". And it also proposes the effective method on how to deal with the high oil price.Finally, under the improvement on power unit of HEV, this paper has realized the parameter concept using effective area based on the specific operating mode. The test results have demonstrated that the effective area's design method may instruct the direction on unit development. At the same time, it can enhance the fuel efficiency and deepen the system's control technology.The research of this paper is a foundational work which can push the HEV to a large-scale market. And it proposes the method on how to choose the configuration under the project constrains and different performance demand. And it also provides the parameter match principle and control strategy instruction, which can deepen the technology on how to save oil further.