1. 研究目的与意义（文献综述）

the energy revolution never stops. after the century, government and people pay more attention to the environment, and the vehicle industry have make remarkable break through. facing the higher fossil fuel prise and the strict limit of pollution, many vehicle manufacture have turned to the research and production of new energy vehicle. in the passenger car field, many vehicle manufacture have publish many pure electric vehicle like tesla and byd. as the same time, many famous vehicle manufacture, including toyota, have also publish a variety of plug-in electric vehicle or fuel cell vehicle. however, in the field of commercial vehicle, especially bus, china have not pay enough attention in it. in the recent years, the extension of the high-speed train provide more choice for the domestic travel. for many of traveller is taking a bus from the high-speed railway station to the destination a optimal choice. also, as the development of the global vehicle industry, the number of vehicles around the city have rocket up, so the public transport become the key solution to the urban traffic congestion, and become the main stream of the urban traffic. but the traditional internal combustion bus lead to high pollution and require high frequency of periodic repair due to high attendance rate. although the average carbon emission is still lower than private car, it still cause negative influence to the environment. naturally, fuel cell bus, because of its low green house gas emission, average 66% lower, and free from periodic repair of the engine, have come to the view of the bus operator. based on the truth of the large population of china, china have set fuel cell as the key point of the plan ‘十三五’ and precisely set ‘hydrogen energy and fuel cell’ as the new direction of the energy-technology innovation strategy. according to the ‘saving energy and new energy vehicle technology branching program’ from vehicle engineering association in 2016, the number of fuel cell vehicle should reach a total number of 5000 in public service field at 2020. also china government have introduce corresponding policies to provide allowance to each new fuel cell bus, from 200,000 per bus to 500,000 per bus. however, in terms of the popularizing rate of the fuel cell bus in china is much lower than the eu and america. currently there are only 4 hydrogen refilling station in service, and much of them are aim to fill the demonstrational fuel cell bus. in america only in 2009 have 63 hydrogen refilling station service, and now 26 fuel cell bus are running. up to 2015 in the eu there are 95 hydrogen refilling station on service, and a total of 84 fuel cell bus are running in 8 country and 17 regions. although there is still a long way to compare with the corresponding equipments in western country, it is predicted that in 2020 there will be more than 20 hydrogen refilling station in china. from the running situation of fuel cell bus on earth, fuel cell bus is still a demonstrational program, and have not yet start to industrialization.

considering the following points, i choose fuel cell bus instead of pure electric bus as my research object. 1. because china has a large population, there are 770,000 new energy vehicle get sold. and this total number of new energy vehicle will grow to 5 million in 2025. if we built so much charging pile for electric vehicle, it will take up too much space and therefore fuel cell vehicle can solve this problem.

2. in the aspect of the refilling process of the energy, charging is still a process of electrochemistry, rather than the process of the moving of the energy. because hydrogen refilling is a process of moving energy, there is a beyond comparison advantage in saving time.

2. 研究的基本内容与方案

design the body framework of the 10m fuel cell bus with known front axle and rear axle

collect the data of mature internal combustion bus, pure electric bus and fuel cell bus and determine the size and position of the battery group, fuel cell group and hydrogen tank.

complete the primary design of the body framework

3. 研究计划与安排

finish the primary design and the setting of catia model of the framework by 31.march

finish the primary verification by 7.april

finish the optimization of the primary design by 14.april

4. 参考文献（12篇以上）

[1]袁渊.客车车身结构的有限元分析方法研究[j].2004,18(4):1-5

[2]张柄力，朱可，赵韩.燃料电池客车动力系统[a].2006

[3]万钢，孙泽昌.燃料电池汽车动力总成结构配置及参数优化配置 .2006