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Santana2000轿车制动系统设计说明书.doc

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Santana2000轿车制动系统设计说明书.doc

本科生毕业设计(论文)I摘要国内汽车市场迅速发展,而轿车是汽车发展的方向。然而随着汽车保有量的增加,带来的安全问题也越来越引起人们的注意,而制动系统则是汽车主动安全的重要系统之一。因此,如何开发出高性能的制动系统,为安全行驶提供保障是我们要解决的主要问题。另外,随着汽车市场竞争的加剧,如何缩短产品开发周期、提高设计效率,降低成本等,提高产品的市场竞争力,已经成为企业成功的关键。本说明书主要介绍了santana2000轿车制动系统的设计。首先介绍了汽车制动系统的发展、结构、分类,并通过对鼓式制动器和盘式制动器的结构及优缺点进行分析。最终确定方案采用液压双回路前盘后鼓式制动器。除此之外,它还介绍了前后制动器、制动主缸的设计计算,主要部件的参数选择及制动管路布置形式等的设计过程。关键字制动鼓式制动器盘式制动器液压本科生毕业设计(论文)IIAbstractTherapiddevelopmentofthedomesticvehiclemarket,salooncarisanimportanttendencyofvehicle.However,withincreasingofvehicle,securityissuesarearisingfromincreasinglyattractingattention,thebrakingsystemisoneofimportantsystemofactivesafety.Therefore,howtodesignahighperformancebrakingsystem,toprovideprotectionforsafedrivingisthemainproblemwemustsolve.Inaddition,withincreasingcompetitionofvehiclemarket,howtoshortentheproductdevelopmentcycle,toimprovedesignefficiencyandtolowercosts,toimprovethemarketcompetitivenessofproducts,andhasbecomeakeytosuccessofenterprises.Thispapermainlyintroducesthedesignofbrakingsystemofthesantana2000typeofcar.Fistofall,brakingsystemsdevelopment,structureandcategoryareshown,andaccordingtothestructures,virtuesandweaknessofdrumbrakeanddiscbrake,analysisisdone.Atlast,theplanadoptinghydroidtwobackwaybrakewithfrontdiscandreardrum.Besides,thispaperalsointroducesthedesigningprocessoffrontbrakeandrearbrake,brakingcylinder,parameterschoiceofmaincomponentsbrakingandchannelsettings.Keywordsbrakingbrakedrumbrakedischydroidpressure本科生毕业设计(论文)III目录第1章绪论...........................................................................................................11.1制动系统设计的意义................................................................................11.2制动系统研究现状....................................................................................11.3本次制动系统应达到的目标....................................................................21.4本次制动系统设计要求............................................................................2第2章制动系统方案论证分析与选择.................................................................32.1制动器形式方案分析................................................................................32.1.1鼓式制动器.....................................................................................32.1.2盘式制动器.....................................................................................52.2制动驱动机构的结构形式选择................................................................62.2.1简单制动系.....................................................................................62.2.2动力制动系.....................................................................................72.2.3伺服制动系.....................................................................................82.3液压分路系统的形式的选择....................................................................82.3.1II型回路..........................................................................................82.3.2X型回路..........................................................................................92.3.3其他类型回路.................................................................................92.4液压制动主缸的设计方案........................................................................9第3章制动系统设计计算...................................................................................113.1制动系统主要参数数值..........................................................................113.1.1相关主要技术参数.......................................................................113.1.2同步附着系数的分析...................................................................113.2制动器有关计算......................................................................................123.2.1确定前后轴制动力矩分配系数β...............................................123.2.2制动器制动力矩的确定.............................................................123.2.3后轮制动器的结构参数与摩擦系数的选取...............................123.2.4前轮盘式制动器主要参数确定...................................................143.3制动器制动因数计算..............................................................................153.3.1前轮盘式制动效能因数...............................................................153.3.2后轮鼓式制动器效能因数...........................................................153.4制动器主要零部件的结构设计..............................................................16本科生毕业设计(论文)IV第4章液压制动驱动机构的设计计算...............................................................194.1后轮制动轮缸直径与工作容积的设计计算..........................................194.2前轮盘式制动器液压驱动机构计算.....................................................204.3制动主缸与工作容积设计计算..............................................................214.4制动踏板力与踏板行程..........................................................................214.4.1制动踏板力pF.............................................................................214.4.2制动踏板工作行程.......................................................................22第5章制动性能分析...........................................................................................235.1制动性能评价指标..................................................................................235.2制动效能..................................................................................................235.3制动效能的恒定性..................................................................................235.4制动时汽车的方向稳定性......................................................................235.5制动器制动力分配曲线分析...................................................................245.6制动减速度j..........................................................................................255.7制动距离S..............................................................................................255.8摩擦衬片(衬块)的磨损特性计算.......................................................265.9驻车制动计算...........................................................................................27第6章总论.........................................................................................................29参考文献.................................................................................................................30致谢.......................................................................................................................31附录1......................................................................................错误未定义书签。附录2......................................................................................错误未定义书签。

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