1. 研究目的与意义（文献综述）

1 the purpose and significance of the topic, and the researchstatus at home and abroad

1.1 purpose and significance

dct is based onthe development of parallel shaft manual transmission, and it inherits themanual transmission’s high efficiency, compact installation space, lightweight, cheap and many other advantages. the advantages of dct are reflected inthe improvement of vehicle performance and the reduction of production cost ofautomatic transmission.

2. 研究的基本内容与方案

2 the basic content, objectives and technical solutions andmeasures of the design

the maincontents of this design include the following points：

(1)analyze the structure, performance and advantages and disadvantages of variouscommonly used automatic transmission.

3. 研究计划与安排

3 design schedule

semester7,19^th to 20^th week: to determine the graduation design topics, graduationdesign task book (related parameters), school data collection.

semester8,1^st week: organize ideas, search reference, complete the opening report.

4. 参考文献（12篇以上）

4 references

[1] 赵志强. 湿式双离合器自动变速器建模及仿真分析[d].湖南大学,2009.

[2] 尤银刚,罗映,孔庆祥. 双离合变速器建模仿真及分析[j].重庆理工大学学报(自然科学),2015,05:6-11.