1. 研究目的与意义（文献综述）

1, whyi choose the fuel cell bus as my research object?

thecar has become the most important vehicle tool for people, and has made greatprogress on the advancement of the human since the first car appeared. theproduce and sale amount of the car increased sharply over the last 20 yearswith the development of global car industry, and it also brought some badinfluences, such as the pollution of environment and the cost of energy. thedemand for petroleum resources from traditional automobiles also has anincreasingly greater impact on the ecological environment. more importantly,the carbon dioxide from the exhaust produced by car has great impact in thegreenhouse effect and global warming. the nitrogen oxides, carbon monoxide,unburned hydrocarbons and particulate emissions and other harmful substancesfrom car exhaust produced by car also have some bad impact on the ecologicalenvironment. automobiles emit more than 200 million tons of harmful gases everyyear, accounting for about 60% of the total amount of air pollution, and arerecognized as the first killer of atmospheric pollution. many countries have putforward a series of stringent emission regulations to require automakers to tryto reduce vehicle emissions and develop pollution-free and ultra-low-pollutionvehicles. the pressure from the energy problem and environment pollution letmany countries in the world try their best to find new vehicle equipment toreplace the traditional automobiles.

2. 研究的基本内容与方案

main contents

1, determine the main program thatcooling system of fuel cell bus pcu.

2, complete the one-dimensionalsimulation of the cooling system of fuel cell bus pcu.

3. 研究计划与安排

weeks 1-3, search the literature,collect resources , write a document retrieval.

week 4, write the report of projectstart and translate the foreign papers.

weeks 5-6, select the parameters anddetermine the main program that cooling system of fuel cell bus pcu.

4. 参考文献（12篇以上）

[1] 林成涛, 陈全世. 燃料电池客车动力系统结构分析[j]. 公路交通科技, 2003, 20(5):133-137.

[2] 廖水容. 混合动力燃料电池客车发展趋势[j]. 淮阴工学院学报, 2009, 18(1):27-30.

[3] 朱元, 孙鸿航, 田光宇,等. 燃料电池客车整车控制系统的研究[j]. 汽车工程, 2005, 27(2):136-140.