教学材料《汽车专业英语》-MT

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Task2AutomobileChassisManual

2.2ManualTransmission2FunctionoftheMT1.StructureoftheMT2.PrincipleoftheMT

3.KnowledgeExtension4.LearningObjectives3What’sthefunctionofthetransmission?

Changestheenginetorque

Reversesthevehiclemovement

Disengagesthedrive4ClassificationFinite---CVT=ContinuouslyVariableTransmissionMT=ManualTransmissionAT=AutomaticTransmissionAMT=AutomaticMechanicalTransmissionInfinite5NewAudiA4L6MT7

MorepowerfulExcellentAccelerationCapacity

HigherMaximumSpeed

Comfort

Economy

Advantages:变速器MTEvaluationIndex8maxoutputpower（kW/hp）：132(180)/4000-6000rpmmaxoutputtorque（Nm）：

320/1500-3900rpmmaxspeed（km/h）：

225fuelconsumption（l/100km）：

5.7（90km/h）acceleration（0-100km/h）：

8.42.0TFSI发动机AVS2.0TFSIEngine9motioncharacteristic–drivermustoperatebyhimself,

allisinhand

ComfortlaysundertributeLowthecostofproduction

MTAdvantages：highertransmissionefficiency，reactquickly，loweroilconsumption，lowerproductioncostShortcomings：drivercutsoffpower，inconvenientoperation，frictionplatesneedreplacing变速器1011WhatisthefunctionoftheMT?Allowtheenginetooperateinitsnarowrangeofspeedswhileprovideingawiderangeofoutputspeed.Tomeetvariabletorquereqirements.使发动机的有限转速无限扩大化；满足各种扭矩的需求。12Inotherwords,Itisdesignedforchangingthetorquetransmittedfromtheenginecrankshafttothepropellershaft,reversingthevehiclemovementanddisengagingtheenginefromthedrivelineforalongtimeatparkingorcoasting.13StructureHousing:iron;Inputshaft&outputshaft:steel,rollerbearing,coaxial;ConstantmeshgearsLever,shiftrail,shiftfork,sphericalbulbSynchronizer14layshaftprimaryshaftsecondaryshaftconstant-meshpinionconstant-meshpinionreversepinionreverseslidingpinion15SynchronizerAsynchro’spurposeistoallowthecollarandthegeartomakefrictionalcontactbeforetheteethmakecontact.Thisletsthecollarandthegearsynchronizetheirspeedsbeforethe