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毕业论文网 > 开题报告 > 机械机电类 > 车辆工程 > 正文

小型电动代步车总体设计开题报告

 2021-03-11 00:33:00  

1. 研究目的与意义(文献综述)

1.1 purpose and meaning

chineseoil consumption has been increasing with the growth in vehicle market.nowadays, china has become anet importer of crude oil, natural gas and other resources. the imported energyhas exceeded 50% of the proportion of energy in china[1]. in the real situationof huge energy consumption, china is facing a serious environmental crisis andarduous energy saving task.


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2. 研究的基本内容与方案

2.1. Researchcontents


Accordingto an European report, electric vehicles, produced between 2011 and 2015, had adriven range around 150km[10]. Because the necessary driven distancefor humans’ daily work is approximately 60 to 80km[11], it iscompletely possible for pure electric vehicles to meet daily demands on drivenrange. To satisfy daily travel demands and reduce traffic congestion, a small pure electric pickup vehicle containing four peopleis chosen as design objective.

(1)Performance ofdesigned vehicle

Referred to the similar market positioning micro-electricvehicles, the main parameters are as follows:

Length*Width*Height(mm)

3500*1650*1550

Wheel Base(mm)

2500

Maximum torque(N.m)

100

Maximum speed(km/h)

100~150

Rated motor power(kw)

gt;=50

Driven distance(km)

100

Curb mass(kg)

lt;1200

According to the basic vehicle parameters, makingcalculations and corrections on vehicle dynamics, handling stability, economicperformance and other ensures that the design objectives and performance can beachieved [12]. Electric vehicle drive layout program is determinedwith thecorresponding design data, and analysis of electric vehicle’s performance underdesigned conditions also can becompleted with pure electric vehicle power balance analysis[13].its overall Functional area division is determined according to the overalldesign principles of electric vehicles[14].



(1) (2)Verifications on the design parameters

According to the obtained data in design program, thecorresponding technical performance indicators can be published. Then, comparingperformance data with existing industry standards, national standards, andexpected performance searches for establishing parametric model of EV. Finally,making models and simulations on vehicle layout verify the feasibility andreliability of design ideas.

2.2. Proposed technology route

The vehicle design is divided into the vehicle conceptdesign and the vehicle structure design. This process requires a correspondingconsideration about vehicles’ key parameters to meet technical requirements andselect and design a suitable overall layout [15]. With optimizationson vehicle component dimensions, finally, the vehicle’s actual performance canbe given for comparing with reality requirements to judge the design quality.And the process can be summarized as follows:


Firstly,carrying on concept analysis to vehicle determines several suitable layouts,and comparing with those plans selects the best one to divide geometric dimensions and functional areas and establishesparametric model of EV. Then, makingverifications on model performance judges if design satisfies requirements andrevises parameters to meet standards.

Comparingwith the typical layouts around the world, selected electricvehicle layout is as follows:



Due to the small size of the electric scooter, theavailable space on the car is limited.

The overall arrangement of the layout chooses the frontlayout of motor, and placement of the battery in floor to ensure a certaincargo capacity and safety factor. Based on the design of the suspension at home and abroad,it is proposed to choose the McPherson front suspension and the torsion beamrear suspension. After relativelyverifying and calculating on overall design, the production of thecorresponding three-dimensional model, assembly drawings, parts drawings anddrawings is the end of total design process.




3. 研究计划与安排

1. Schedule

According to the school arrangement, the proposed schedule is as follows:

1(The 19th and 20th weeks of 7th semester)

To determine thegraduation design topics, graduation design task book (related parameters),and school data collection

2(The first week of 8th semester)

Plan ideas, literature search, complete theopening report

3(Thesecond and third weeks of 8th semester)

Off - campus internship, out - of - schooldata collection, completion of internship report

4(The 4thweek of 8th semester)

Foreign language translation, data collection

5~7(The 5thto 7th weeks of 8th semester)

Design calculations, sketching

The weekend in7th week

The period reply

8~10(The 8thto 10th weeks of 8th semester)

Drawing drawings, writing designcalculations(thesis), pre-defense

11~13(The11th to 13th weeks of 8th semester)

Manual drawings and design calculations,Finish information bag, review reply qualification

14(The14th of 8th semester)

Students apply for a defense and preparefor a reply; teachers review drawings and instructions

15~16(The15th and 16th weeks of 8th semester)

Reply, Recommend provincial distinctions

4. 参考文献(12篇以上)

4.references

[1][1]唐葆君,刘江鹏. 中国新能源汽车产业发展展望[j]. 北京理工大学学报. 2015(02).

[2][2]李苏秀,刘颖琦,王静宇,张雷. 基于市场表现的中国新能源汽车产业发展政策剖析[j]. 中国人口·资源与环境,2016,09:158-166.

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