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《横臂式悬架技术解析arm suspension》由会员上传分享，免费在线阅读，更多相关内容在行业资料-天天文库。
1、横臂式悬架技术解析ArmsuspensionArmsuspensionistheindependentsuspensionwheelswinginthevehicletransverseplane,accordingtothenumberofcrossarmnumberisdividedintodoubletransversearmtypeandsinglearmsuspension.Singletransversearmtypehastheadvantagesofsimplestructure,rollcenterhigh,hastheadvantagesofstronga
2、ntirollcapability.Butwiththedevelopmentofmodernautomobilespeed,rollcenteristoohighwillcausethewheelbeatstreadchangebig,tirewearintensifies,andinasharpturnaroundtheverticalforcetransferistoolarge,resultinginincreasedrearcamber.Reducetherearwheelcorneringstiffness,resultinginseriousconditiono
3、fhigh-speedflick.Singletransversearmtypeindependentsuspensionisappliedintherearsuspension,butbecausetheycouldnotadapttotherequirementsofhighspeed,thereisnotmuchuse.Doublewishboneindependentsuspensionbytheupperandlowerarmlength,anddividedintoequallengthdoublewishbonetypeandlengthdoublewishbo
4、nesuspensiontypetwo.Lengthdoublewishbonesuspensioninthewheelupanddownbeat,thekingpininclinationtomaintainthesame,butthetrackchangeslarge(andsingletransversearmtypesimilar),resultinginseveretirewear,isnowseldomused.Forunequallengthdoublewishbonesuspension,aslongasthelengthoflowercrossarmprop
5、erselection,optimization,andareasonablelayout,parameterscanchangewithinacceptablelimitsthescopeofthetreadandthefrontwheelalignment,ensurethevehiclehasexcellentstability.Atpresent,unequallengthdoublewishbonesuspensionhasbeenwidelyusedinthefrontandrearsuspensioncars,therearpartofsportsandraci
6、ngcarsalsousethissuspensionstructure.横臂式悬架是指车轮在汽车横向平面内摆动的独立悬架，按横臂数量的多少又分为双横臂式和单横臂式悬架。单横臂式具有结构简单，侧倾中心高，有较强的抗侧倾能力的优点。但随着现代汽车速度的提高，侧倾中心过高会引起车轮跳动时轮距变化大，轮胎磨损加剧，而且在急转弯时左右车轮垂直力转移过大，导致后轮外倾增大。减少了后轮侧偏刚度，从而产生高速甩尾的严重工况。单横臂式独立悬架多应用在后悬架上，但由于不能适应高速行驶的要求，目前应用不多。双横臂式独立悬架按上下横臂是否等长，又分为等长双横臂式和不等长双横臂式两种悬架。等长双横臂
7、式悬架在车轮上下跳动时，能保持主销倾角不变，但轮距变化大(与单横臂式相类似)，造成轮胎磨损严重，现已很少用。对于不等长双横臂式悬架，只要适当选择、优化上下横臂的长度，并通过合理的布置，就可以使轮距及前轮定位参数变化均在可接受的限定范围内，保证汽车具有良好的行驶稳定性。目前不等长双横臂式悬架已广泛应用在轿车的前后悬架上，部分运动型轿车及赛车的后轮也采用这—悬架结构。absorber(ShockAbsorber)shockabsorberdemandisbecausethespringisnotimmedi
