Automobiles - Vehicle_Dynamics(17)
时间：2025-07-08
VehicleDynamicsFHRegensburg,UniversityofAppliedSciences
Figure1.14:KingpinandCasterAngle
kingpin,describedinthevehicle xedcoordinatesystem
tanν=
with
eS,F
(3)eS,F
(1)
andtanσ=
T
eS,F
(3)eS,F
(2)
(1.5)
eS,F=
(1)eS,F(2)eS,F(3)eS,F
.(1.6)
1.4.3.3DisturbingForceLever,CasterandKingpinOffset
Thedistancedbetweenthewheelcenterandthekingpinaxisiscalleddisturbingforcelever.Itisanimportantquantityinevaluatingtheoverallsteerbehavior.
Ingeneral,thepointSwherethekingpinrunsthroughthetrackplanedoesnotcoincide
withthecontactpointP,Fig.1.15.
Figure1.15:CasterandKingpinOffset
Ifthekingpinpenetratesthetrackplanebeforethecontactpoint,thekinematickingpinoffsetispositive,nK>0.
Thecasteroffsetispositive,rS>0,ifthecontactpointPliesoutwardsofS.
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