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Automobiles - Vehicle_Dynamics(10)

时间:2025-07-08   来源:未知    
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FHRegensburg,UniversityofAppliedSciences

springsorbyrigidlinks,

Fig.1.2.Solidaxlestendtotramponroughroad.

Prof.Dr.-Ing.G.Rill

Leafspringguidedsolidaxlesuspensionsystemsareveryrobust.Dryfrictionbetweentheleafsleadstolockingeffectsinthesuspension.Althoughtheleafspringsprovideaxleguidanceonsomesolidaxlesuspensionsystemsadditionallinksinlongitudinalandlateraldirectionareused.Thusthetypicalwindupeffectonbrakingcanbeavoided.

Solidaxlessuspendedbyairspringsneedatleastfourlinksforguidance.Inadditiontoagooddrivingcomfortairspringsallowlevelcontroltoo.

1.2.3Speci cSuspensionSystems

TheSemi-TrailingArm,theSLAandtheTwistBeamaxlesuspensionaresuitableonlyfornonsteeredaxles,Fig.1.3.

Figure1.3:Speci cWheel/AxlesSuspensionSystems

Thesemi-trailingarmisasimpleandcheapdesignwhichrequiresonlyfewspace.Itismostlyusedfordrivenrearaxles.

TheSLAaxledesignallowsanearlyindependentlayoutoflongitudinalandlateralaxlemo-tions.ItissimilartotheCentralControlArmaxlesuspension,wherethetrailingarmiscom-pletelyrigidandhenceonlytwolaterallinksareneeded.

Thetwistbeamaxlesuspensionexhibitseitheratrailingarmorasemi-trailingarmcharacter-istic.Itisusedfornondrivenrearaxlesonly.Thetwistbeamaxleprovidesenoughspaceforsparetireandfueltank.

1.3SteeringSystems

1.3.1Requirements

Thesteeringsystemmustguaranteeeasyandsafesteeringofthevehicle.Theentiretyofthemechanicaltransmissiondevicesmustbeabletocopewithallloadsandstressesoccurringinoperation.

5

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