某MPV车型鼓式制动器改进设计摘要鼓式制动器作为商务车普遍采用的制动器，作为保障汽车行车安全的关键部件。随着社会和科技的不断进步，在高速路和长下坡路面对汽车制动系的要求越来越高，经过调查分析发现某MPV车型因为其鼓式制动器结构的问题使制动力的不足而引起交通事故的发生，因此改善汽车制动的工作性能，保障车辆安全行驶和乘员的自身安全，对其鼓式制动器进行分析和重新改进设计具有十分重要的意义。制动器的设计有相关的法规规定，设计要符合法规要求。依据法规作为出发点，本文首先介绍了汽车制动系的综合论述，分析了国内外鼓式制动器的研究现状，提出制动器设计所要达到的要求，对原车型鼓式制动器进行分析，找出存在的问题，然后对各类鼓式制动器进行结构使用性分析，选择合适的制动器为设计方案。通过设计计算，改进设计的制动器符合规定的要求，其MPV车型在制动距离和制动时的减速度得到改善，制动器的制动力矩得到有效的分配。关键词：某MPV车型；鼓式制动器；改进设计；制动效能AbstractDrumbrakeiswidelyusedincommercialvehiclesasabrake,asakeycomponenttoensurevehiclesafety.Withthecontinuousprogressofsocietyandscienceandtechnology,therequirementofautomobilebrakesystemishigherandhigheronExpresswayandlongdownhillroad.Throughinvestigationandanalysis,itisfoundthatacertainMPVvehiclehastrafficaccidentsbecauseoftheinsufficientbrakingforcecausedbythestructuralproblemsofitsdrumbrake.Therefore,theworkingperformanceofautomobilebrakeisimproved,thesafetyofvehicledrivingandpassengersisguaranteed,anditsdrumsystemisadopted.Itisofgreatsignificancetoanalyzeandredesigntheactuator.Thedesignofbrakeisregulatedbyrelevantlawsandregulations,andthedesignmeetstherequirementsoflawsandregulations.Accordingtotheregulationsasthestartingpoint,thispaperfirstlyintroducesthecomprehensivediscussionofautomobilebrakesystem,analysestheresearchstatusofdrumbrakeathomeandabroad,putsforwardtherequirementsofbrakedesign,analysestheoriginaldrumbrake,findsouttheexistingproblems,thenmakesstructuralusabilityanalysisofvariousdrumbrakes,andchoosestheappropriatebrakeasthedesignscheme.Throughdesigncalculation,theimprovedbrakemeetstherequirements.ThebrakingdistanceandbrakingdecelerationofMPVvehicleareimproved,andthebrakingmomentofthebrakeiseffectivelydistributed.Keywords:aMPVmodel;drumbrake;improveddesign;brakingefficiency摘要关键词目录图目录..............................................................................................................................................6表目录..............................................................................................................................................71绪论..........................................................................................................................................81.1汽车制动系统的概述...............................................................................................81.1.1制动系的功用：...............................................................................................81.1.2制动系的组成...................................................................................................81.1.3制动系的类型...................................................................................................81.2鼓式制动器的研究现状...........................................................................................91.2.1国外鼓式制动器的研究现状...........................................................................91.2.2国内鼓式制动器的研究现状..............
