外文翻译--惯性与电动挂车刹车.doc

重庆理工大学翻译二级学院机械工程学院班级学生姓名原文：eHowCarRepair&MaintenanceBrakeRepair&MaintenanceRepairTrailerBrakesInertiaVs.ElectricTrailerBrakesByEdmundGary,eHowContributorDangerousTsaysmoststateshaveregulationsgoverningtrailersweighingmorethan3,000pounds.Thereislittleifanyregulationfortrailersweighingunder3,000pounds.Ifatrailerisdesignedtocarry3,000pounds,itmusthaveaworkingbrakingsystem.Twotypesofbrakingsystemsareavailable:inertiatrailerbrakesandtheelectrictrailerbrakes.BrakeControllersElectricbrakecontrollersareautomobileoriginalequipmentmanufacturedoraftermarket-installeddevicemodules.Theyactivatethetrailerbrakesandareneededifthetraileruseselectricbrakes.Thecontrollersaremountedonorunderneaththetowvehiclesinstrumentpanelonthedriversside.Thecontrollerscancomeindifferentproductclasses,suchasproportionalorinertiabrakecontrollers.ElectricTrailerBrakesElectricbrakesfeedpowerfromthetowvehiclesbrakelightsintothecontroller.Thetrailerbrakesareactivatedbyaseparateheavy-dutycircuitthroughaplugandsocket.Thisallowsthebrakestoworkautomaticallywheneverthetowvehiclesbrakesareapplied.Properlyadjustedcontrollerscanallowtowvehicleandtrailercombinationtocometoastopassmoothlyasifthetowvehiclewasbyitself.InertiaTrailerBrakesInertiaactivatedbrakesofferssmoothstoppingresponseinmostsituations.AccordingtoRVtechnicianRegDeYoung,theinertiabrakeshasaninternalsensingdeviceorapendulumwhichsensesthetowvehiclesrateofdeceleration.Thesensingdevicethenappliestheamperagetothetrailerbrakesatthesamerateofdecelerationasthetowvehicle.DrawbacksofInertiaandElectricBrakesThependulumoftheinertiabrakesmaynotswingcorrectlybecauseofchangesintheangleorchanges,andthiscanleadtojerkystops,accordingtoHensleyManufacturing.Electricbrakestendheatuptoatemperatureof300degreesFahrenheit.Thischangestheresistanceinthemagnetsinthebrakesystem,whichleadstobrakefade.ConclusionTrailerbrakesareacrucialpieceofequipmentwhenthetrailerhasreachedaspecificweightthreshold.SomestatesintheUnitedStatesmayhaveverylittleregulationoftrailerbrakesforunitsunder3,000pounds,butitisbesttocheckthelocalregulationswherethetrailerwillbeoperated.译文：惯性与电动挂车刹车EdmundGaryDangerousT说,大多数州都规定挂车的重量超过3000磅。几乎没有任何监管对于3000磅以下的挂车。如果一个拖车被设计用于携带3000磅,它必须有一个工作制动系统。两种类型的制动系统是可用的:惯性挂车车刹车和电动挂车刹车。制动控制器电制动控制器是汽车原始设备是制造或售后安装设备的模块。他们激活挂车刹车，如果需要也激活电动刹车。控制器被安装在牵引车的驾驶员侧的仪表盘上或下方。控制器可以有不同的产品类,如惯性制动控制器。电动拖车刹车电动刹车回馈系统从车辆的刹车灯回馈到电控制器中。拖车制动器是由一个单独的电路，通过插头和插座重新激活。这允许刹车自动工作只要挂车的刹车系统是应用的。如果是拖车本身，适当调整控制器可以让牵引车和挂车组合顺利停止。惯性挂车刹车激活惯性刹车系统在大多数情况下，能提供平稳的停止响应。根据房车技术员RegDeYoung所说,惯性制动器有一个内部传感装置或一个钟摆,感应挂车减速的速度。然后，传感装置应用安培数使挂车和牵引车以相同的速度减速。缺点惯量和电刹车钟摆的摆动惯性刹车可能不正确,因为角度随时在变化。这可能会导致不平稳停