E90 Suspension & Chassis Components

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1、TableofContentsE90Suspension&ChassisComponentsSubjectPageSuspension...................................................3DoublePivotSpringStrutFrontAxle..............................4RearAxle......................................................8RearAxleComponents..................

2、.....................9HA5Links.................................................10Advantages................................................11ManufacturingCosts.....................................11LightConstruction.......................................11Production..............

3、................................11Kinematics..............................................11CrashRequirements.....................................12Rigidity/Acoustics........................................12Setting.................................................13DevelopmentofB

4、MWRearAxles...............................14SteeringColumn.............................................15ElectronicSteeringLock(ELV)..................................16InitialPrintDate:03/05RevisionDate:06/05Suspension&ChassisComponentsModel:E90Production:FromStartofProductionAft

5、ercompletionofthismoduleyouwillbeableto:•Identifythechangesinthefrontaxle•Identifythechangesintherearaxle•Understandthechangestothesteeringcolumn2E90Suspension&ChassisComponentsSuspensionThechassisandsuspensionofE90representanewstepforwardinthemid-sizeclass,bothatthefrontaxleaswe

6、llasattherearaxle.Thefrontaxleutilizesadoublepivotspringstrutaxle(MacPhersonstrut)inaluminium.FrontandrearaxlesintheE90BMWhasusedthedoublepivotspringstrutfrontaxledesigninseveralmodelssinceitsinitialintroduction.Thedoublepivotspringstrutfrontaxledesignhaspreviouslybeenusedonall5,

7、7and8seriesvehiclesandwillnowbeusedonthenew3series.OntheE90thefrontaxledesignwillseetheadditionofanewreinforcingstrut.Thebal-ancingcomponents-controlarmandtensionstrutmountsplustheengineandtrans-missionmountshavealsobeenmodifiedforapplicationontheE90.Therearaxlehasbeencompletelyr

8、edesignedasafive-linkaxle.3E90Suspension