1. 研究目的与意义（文献综述）
1.purpose and significance (including analysis of research status at home and abroad)
1.1the background and significance of the research
with the development of automobile industry, environmental pollution has become increasingly serious. in order to achieve sustainable development, new energy vehicles have become imperative in the era of low-carbon and environmental protection.for the sake of our planet and our future generations, the development of new energy vehicles has become an inevitable road for the world's automobile development [12].new energy vehicles have significant advantages over traditional internal combustion engine vehicles. for example, the driving power of electric motors does not emit harmful gases that pollute the atmosphere. even if the power consumption is converted into the emissions of power plants, other pollutants besides sulfur and particles are also significantly reduced.in addition, electric cars can also make full use of the surplus electricity charging at night when the electricity consumption is low, so that the power generation equipment can be fully utilized day and night, greatly improving its economic benefits.it is these advantages that make the research and application of electric vehicles become a hot spot in automobile industry.
2. 研究的基本内容与方案
2.research (design) of the basic content, objectives, proposed technical solutions and measures
this paper aims to design a complete reducer according to the reference data, including reducer overall structure design, gear design and strength check, bearing design and strength check, shaft design and strength check, reducer kinematics analysis.
the main contents of this paper include the following five parts:
3. 研究计划与安排
3.Schedule
| Week | Work Content | Submissions |
| 1-2 | Determine the topic,improve the task book,data collection | Task book |
| 3-4 | Plan design, document search,complete proposal report | Literaturesearch, Opening report |
| 5 | Foreign translation, data collection | Foreign translation |
| 6 | capstone presentation | Capstone presentationPPT,Capstone presentationrecord sheet |
| 7～8 | Design calculation, sketch drawing | Design calculation draft, Sketch |
| 9～11 | Drawing drawings, writing papers | Design, Paper draft |
| 12～15 | Design and paper arrangement; Focus group mid-term inspection | Formal drawings, Paper |
| Graduation internship for two weeks | Off-campus or online internship, data collection, completion of internship report | Internship report |
| 16 | Students apply for defense, prepare for defense, and organize thematerials.Examination of the defense qualification and reexamination;The teacher reviews drawings and specifications | Graduation designinformation kit |
| 17 | Participate in the defense | Capstone presentationPPT, Graduation design grade |
4. 参考文献（12篇以上）
4.read no less than 25 references (including no less than 8 references in foreign languages in the past five years)
[1]王量.纯电动汽车减速器结构设计和分析[d].吉林大学,2015.
[2]周晶晶.纯电动汽车两档自动变速器试验与仿真[d].湖南大学,2014.
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