2026年汽车维修技师英语词汇与阅读理解练习

2026年汽车维修技师英语词汇与阅读理解练习一、单选题（总共20题，每题2分）1.Whatistheprimaryfunctionofthecatalyticconverterinamodernautomobile?A.ToincreaseenginepoweroutputbycompressingairB.ToconvertharmfulexhaustgasesintolessharmfulsubstancesthroughchemicalreactionsC.ToregulatethefuelinjectionsystemforoptimalcombustionD.Tofilteroutparticulatematterfromtheairintakesystem2.HowdoesaCVT(ContinuouslyVariableTransmission)differfromatraditionalautomatictransmission?A.CVTuseshydraulicfluidtoshiftgearswhiletraditionalautomaticusesmanuallinkageB.CVTcanachieveinfinitegearratioswhiletraditionalautomatichasfixedgearnumbersC.CVTisonlysuitableforelectricvehicleswhiletraditionalautomaticisforgasolinecarsD.CVThashighermaintenancerequirementsthantraditionalautomatic3.Whatdoestheterm"OBD-II"standforinautomotivediagnostics?A.On-BoardDiagnosticsInternationalB.OriginalBatteryDesignInternationalC.On-BoardDigitalInstrumentationInternationalD.On-BoardDiagnosticIIInternational4.Whichofthefollowingisacommonsymptomofafailingserpentinebeltinavehicle?A.SuddenengineoverheatingB.UnusualnoisesfromtheexhaustsystemC.IntermittentpowersteeringfailureD.Warninglightsonthedashboard5.WhatisthepurposeoftheEGR(ExhaustGasRecirculation)systeminaninternalcombustionengine?A.ToreduceenginenoiselevelsB.TorecirculateexhaustgasesbackintothecombustionchambertolowernitrogenoxideemissionsC.ToimprovefuelefficiencybyreusingcombustionbyproductsD.Toregulatetheengine'sidlespeed6.HowdoesABS(Anti-lockBrakingSystem)contributetovehiclesafety?A.Byautomaticallyadjustingtheengine'sRPMduringbrakingB.BypreventingthewheelsfromlockingupduringemergencybrakingC.ByreducingthestoppingdistanceonwetroadsD.Byenhancingthevehicle'saccelerationonslipperysurfaces7.Whatisthefunctionofthethrottlebodyinagasolineengine?A.TocontroltheflowofairintotheengineB.ToregulatethetemperatureoftheenginecoolantC.TomanagetheelectricalconnectionstothesparkplugsD.Toadjustthepressureofthefuelinjectors8.Whichcomponentisessentialforstartingadieselengine?A.SparkplugsB.FuelinjectorsC.GlowplugsD.Ignitioncoils9.Whatdoestheterm"hydrolock"refertoinautomotivemaintenance?A.Aconditionwherewaterenterstheengine'scoolingsystemB.Asituationwheretheengine'soilbecomestoothicktocirculateC.Anissuewherewaterenterstheengine'scylindersduringoperationD.Aproblemwiththeengine'shydrauliclifters10.Howdoesaturbochargerimproveengineperformance?A.Byincreasingtheengine'sdisplacementB.BycompressingintakeairtoboostpoweroutputC.ByreducingenginefrictionD.Byalteringtheengine'scompressionratio11.WhatisthepurposeofthePCV(PositiveCrankcaseVentilation)valveinavehicle?A.Toexpelexcessairfromtheengine'scoolingsystemB.ToventcrankcasegasesbackintotheintakemanifoldforrecirculationC.Toregulatetheengine'soilpressureD.Tocontroltheflowoffueltotheinjectors12.Whichofthefollowingisaprimaryfunctionofthealternatorinavehicle?A.TocompressairfortheairconditioningsystemB.TogenerateelectricitytochargethebatteryandpowertheelectricalsystemC.Toregulatetheengine'sfuelinjectionD.Tocontrolthevehicle'stransmissionshifting13.Whatistheroleoftheairfilterinavehicle'sengine?A.Tocooltheengine'scoolantB.TofilteroutcontaminantsfromtheintakeairC.Tolubricatetheengine'smovingpartsD.Toremovewaterfromtheengine'scoolingsystem14.Howdoesadieselparticulatefilter(DPF)helpreduceemissions?A.ByburningoffparticulatematterintheexhaustgasesB.BycapturingandstoringparticulatematterfromtheexhaustC.ByrecirculatingexhaustgasesbackintotheengineD.Byconvertingnitrogenoxidesintonitrogenandoxygen15.Whatisthepurposeofthefuelpumpinagasolineengine?A.TocompresstheairintakeforbettercombustionB.Todeliverfuelfromthetanktotheengine'sfuelinjectorsC.Toregulatetheengine'soilpressureD.Tocontroltheflowofcoolantthroughtheengine16.Howdoesatimingbeltdifferfromatimingchaininanengine?A.TimingbeltismadeofrubberwhiletimingchainismadeofmetalB.TimingbeltisusedindieselengineswhiletimingchainisusedingasolineenginesC.TimingbeltprovidesmoreprecisetimingthantimingchainD.Timingchainismoredurablethantimingbelt17.Whatisthefunctionofthesparkplugsinagasolineengine?A.Tocompresstheair-fuelmixtureB.Toignitetheair-fuelmixturewithanelectricsparkC.Toregulatetheengine'soilpressureD.Tocooltheengine'scoolant18.Howdoesacatalyticconverterhelpreduceemissions?A.ByconvertingunburnedhydrocarbonsintocarbondioxideB.BycapturingandstoringparticulatematterfromtheexhaustC.ByconvertingharmfulexhaustgasesintolessharmfulsubstancesD.Byrecirculatingexhaustgasesbackintotheengine19.Whatisthepurposeoftheairconditioning(A/C)compressorinavehicle?A.TocompressandcirculaterefrigeranttocoolthecabinB.TocompresstheairintakeforbettercombustionC.Toregulatetheengine'soilpressureD.Tocontroltheflowoffueltotheinjectors20.Howdoesahybridvehicledifferfromatraditionalgasolinevehicleintermsofpowertrain?A.HybridvehiclesuseonlyelectricmotorswhiletraditionalvehiclesuseonlygasolineenginesB.HybridvehiclescombineelectricmotorsandgasolineenginesforimprovedefficiencyC.HybridvehiclesrequiremorefrequentoilchangesthantraditionalvehiclesD.Hybridvehicleshaveasmallerfueltankthantraditionalvehicles二、填空题（总共20题，每题2分）1.Theprocessofremovingcontaminantsfromtheair-fuelmixtureintheengineiscalled________.2.Thecomponentthatregulatestheflowofairintotheengineisknownasthe________.3.Thesystemthatrecirculatesexhaustgasesbackintothecombustionchambertoreducenitrogenoxideemissionsiscalledthe________.4.Thedevicethatpreventsthewheelsfromlockingupduringemergencybrakingisreferredtoasthe________.5.Thefluidusedtotransferheatfromtheenginetotheradiatoriscalledthe________.6.Thecomponentthatcompressesintakeairtoboostpoweroutputinaturbochargedengineisthe________.7.Thevalvethatventscrankcasegasesbackintotheintakemanifoldforrecirculationisthe________.8.Theprimaryfunctionofthealternatoristo________.9.Thefilterthatremovescontaminantsfromtheintakeairiscalledthe________.10.Thesystemthatcapturesandstoresparticulatematterfromtheexhaustisknownasthe________.11.Thefluidusedtolubricatetheengine'smovingpartsiscalledthe________.12.Thecomponentthatdeliversfuelfromthetanktotheengine'sfuelinjectorsisthe________.13.Thedevicethatignitestheair-fuelmixturewithanelectricsparkinagasolineengineisthe________.14.Theprocessofconvertingharmfulexhaustgasesintolessharmfulsubstancesiscalled________.15.Thecomponentthatcompressesandcirculatesrefrigeranttocoolthecabinisthe________.16.Thesystemthatcombineselectricmotorsandgasolineenginesforimprovedefficiencyisknownasthe________.17.Thefluidusedtotransferheatfromtheenginetothetransmissioniscalledthe________.18.Thecomponentthatregulatestheengine'soilpressureisthe________.19.Thedevicethatcontrolstheflowoffueltotheinjectorsisthe________.20.Thesystemthatmanagestheelectricalconnectionstothesparkplugsisthe________.三、判断题（总共20题，每题2分）1.Thecatalyticconverterisonlynecessaryfordieselenginestomeetemissionsstandards.2.ACVT(ContinuouslyVariableTransmission)canachievethesamegearratiosasatraditionalautomatictransmission.3.OBD-IIcodescanonlybereadbyprofessionalmechanicswithspecializedequipment.4.Afailingserpentinebeltwillcausetheenginetooverheatduetoreducedcoolingsystemefficiency.5.TheEGR(ExhaustGasRecirculation)systemhelpsimprovefuelefficiencybyrecirculatingexhaustgases.6.ABS(Anti-lockBrakingSystem)isnotnecessaryinvehiclesequippedwithanti-skidtires.7.Thethrottlebodyisonlyrelevantindieselengines,notgasolineengines.8.Glowplugsarenotrequiredinmoderndieselenginesduetoadvancementsinfuelinjectiontechnology.9.Hydrolockcanoccuringasolineenginesifwaterenterstheengine'scylinders.10.Aturbochargerandasuperchargerservethesamepurposeinimprovingengineperformance.11.ThePCV(PositiveCrankcaseVentilation)valvehelpsreduceenginenoisebyventingexcessair.12.Thealternatorisresponsibleforstartingtheenginebyprovidinginitialelectricalpower.13.Theairfilterisnotnecessaryinvehicleswithelectricairconditioningsystems.14.Adieselparticulatefilter(DPF)isonlyrequiredforheavy-dutyvehicles,notpassengercars.15.Thefuelpumpisnotnecessaryinhybridvehiclessincetheyuseelectricmotorsexclusively.16.Atimingbeltismoredurablethanatimingchainandrequireslessfrequentreplacement.17.Sparkplugsareonlyrequiredingasolineengines,notdieselengines.18.Thecatalyticconverterhelpsreduceemissionsbyburningoffparticulatematterintheexhaustgases.19.TheA/Ccompressorisonlynecessaryinvehicleswithamanualtransmission.20.Hybridvehiclesaremorefuel-efficientthantraditionalgasolinevehiclesduetotheircombinedpowertrainsystem.四、简答题（总共8题，每题4分）1.Explainthefunctionofthecatalyticconverterinamodernautomobileandhowithelpsreduceemissions.2.DescribethedifferencesbetweenaCVT(ContinuouslyVariableTransmission)andatraditionalautomatictransmission.3.DiscusstheimportanceoftheOBD-IIsysteminautomotivediagnosticsandhowithelpsidentifyengineissues.4.Explainthesymptomsofafailingserpentinebeltandwhyitisimportanttoaddressthisissuepromptly.5.DescribetheroleoftheEGR(ExhaustGasRecirculation)systeminreducingnitrogenoxideemissionsandhowitworks.6.ExplainhowABS(Anti-lockBrakingSystem)contributestovehiclesafetyandthebenefitsitprovides.7.Discussthefunctionofthethrottlebodyinagasolineengineandhowitaffectsengineperformance.8.DescribethepurposeofthePCV(PositiveCrankcaseVentilation)valveanditsimportanceinenginemaintenance.五、应用题（总共8题，每题6分）1.CaseStudy:A2018ToyotaCamryisexperiencingintermittentpowersteeringfailureandawhiningnoisefromthefrontofthevehicle.Themechanicsuspectsafailingserpentinebelt.Describethestepsthemechanicwouldtaketodiagnoseandreplacetheserpentinebelt.Includethetoolsandequipmentneededandanysafetyprecautionstobetaken.2.Scenario:A2020FordF-150isemittingexcessiveblacksmokefromtheexhaustandtheengineisrunningrough.Theownerreportsthatthevehiclehasbeenservicedrecently,buttheissuepersists.Describethepossiblecausesofthesesymptomsandthediagnosticstepsthemechanicwouldtaketoidentifytheproblem.IncludetheroleoftheEGRsystemandthecatalyticconverterinthisscenario.3.Problem:A2016HondaCivicisexperiencingfrequentstallingwhileidling,especiallyinhotweather.Thecheckenginelightisilluminated,andthemechanichasretrievedthefollowingOBD-IIcodes:P0300(Random/MultipleCylinderMisfireDetected)andP0171(SystemTooLean).Describethepossiblecausesofthesecodesandthestepsthemechanicwouldtaketodiagnoseandrepairtheissue.Includethefunctionofthefuelinjectorsandthethrottlebodyinthisscenario.4.CaseStudy:A2019VolkswagenJettaisexperiencingalackofpowerandpoorfuelefficiency.Themechanichasperformedavisualinspectionandfoundthattheairfilterisdirty.Describethestepsthemechanicwouldtaketoreplacetheairfilterandexplainhowthismaintenancetaskaffectstheengine'sperformance.IncludethefunctionofthePCVvalveandtheimportanceofproperair-fuelmixtureinthisscenario.5.Scenario:A2022TeslaModel3isexperiencingawarningmessageonthedashboardindicatingthatthecatalyticconverterneedstobereplaced.Theownerisconcernedaboutthehighcostoftherepair.Describethefunctionofthecatalyticconverterandexplainwhyitisnecessaryforthevehicletomeetemissionsstandards.Includetheenvironmentalbenefitsofusingacatalyticconverterandthepotentialconsequencesofnotreplacingafailingunit.6.Problem:A2017ChevroletSilveradoisexperiencingaburningsmellandtheengineisoverheating.Themechanichascheckedthecoolingsystemandfoundnoleaks.Describethepossiblecausesofthesesymptomsandthestepsthemechanicwouldtaketodiagnoseandrepairtheissue.Includethefunctionofthethermostatandtheradiatorinthisscenario.7.CaseStudy:A2015NissanAltimaisexperiencingaroughidleandtheengineisrunningpoorly.Theownerreportsthatthevehiclehasbeenusingalotofoilrecently.Describethepossiblecausesofthesesymptomsandthediagnosticstepsthemechanicwouldtaketoidentifytheproblem.Includethefunctionofthesparkplugsandtheroleofthefuelpumpinthisscenario.8.Scenario:A2018MazdaCX-5isexperiencingalackofpowerandtheengineisrunningrough.Themechanichascheckedthefuelinjectorsandfoundthemtobefunctioningproperly.Describethepossiblecausesofthesesymptomsandthestepsthemechanicwouldtaketodiagnoseandrepairtheissue.Includethefunctionofthethrottlebodyandtheimportanceofproperair-fuelmixtureinthisscenario.【标准答案及解析】一、单选题答案及解析1.B解析：Thecatalyticconverter'sprimaryfunctionistoconvertharmfulexhaustgases(carbonmonoxide,hydrocarbons,andnitrogenoxides)intolessharmfulsubstances(carbondioxide,water,andnitrogen)throughchemicalreactions.Thisprocesshelpsvehiclesmeetemissionsstandards.OptionAisincorrectbecausethecatalyticconverterdoesnotincreaseenginepoweroutput.OptionCisincorrectbecausethefuelinjectionsystemisregulatedbytheenginecontrolunit,notthecatalyticconverter.OptionDisincorrectbecausethecatalyticconverterfiltersexhaustgases,notairintake.2.B解析：ACVTusesacontinuousvariabletransmissionmechanismtoprovideaninfinitenumberofgearratios,allowingforsmoothandseamlessacceleration.Incontrast,atraditionalautomatictransmissionhasafixednumberofgears.OptionAisincorrectbecausebothCVTandtraditionalautomatictransmissionscanusehydraulicfluidforshifting.OptionCisincorrectbecauseCVTcanbeusedinbothgasolineandelectricvehicles.OptionDisincorrectbecauseCVTgenerallyhaslowermaintenancerequirementsthantraditionalautomatictransmissions.3.D解析：OBD-IIstandsforOn-BoardDiagnosticsIIInternational.Itisastandardizedsysteminvehiclesthatallowsforthediagnosisanddetectionofengineandtransmissionproblems.OptionAisincorrectbecauseOBD-IIisnotanacronymforOn-BoardDiagnosticsInternational.OptionBisincorrectbecauseOBD-IIisnotrelatedtobatterydesign.OptionCisincorrectbecauseOBD-IIisnotanacronymforOn-BoardDigitalInstrumentationInternational.4.C解析：Afailingserpentinebeltcancausethepowersteeringpumptofail,leadingtointermittentpowersteeringfailure.Othersymptomsincludesquealingnoisesfromthefrontofthevehicleandwarninglightsonthedashboard.OptionAisincorrectbecauseengineoverheatingistypicallycausedbyissueswiththecoolingsystem.OptionBisincorrectbecauseunusualnoisesfromtheexhaustsystemareusuallyrelatedtotheexhaustcomponents.OptionDisincorrectbecausewarninglightsonthedashboardcanbecausedbyvariousissues,notjustserpentinebeltfailure.5.B解析：TheEGR(ExhaustGasRecirculation)systemrecirculatesaportionoftheexhaustgasesbackintothecombustionchambertoreducenitrogenoxide(NOx)emissions.Thisprocesslowersthecombustiontemperature,therebyreducingtheformationofNOx.OptionAisincorrectbecausetheEGRsystemdoesnotreduceenginenoiselevels.OptionCisincorrectbecausetheEGRsystemdoesnotimprovefuelefficiency.OptionDisincorrectbecausetheEGRsystemdoesnotregulatetheengine'sidlespeed.6.B解析：ABS(Anti-lockBrakingSystem)preventsthewheelsfromlockingupduringemergencybraking,allowingthedrivertomaintaincontrolofthevehicle.Thissystemhelpsreducestoppingdistancesonwetroadsandenhancesoverallbrakingperformance.OptionAisincorrectbecauseABSdoesnotadjusttheengine'sRPMduringbraking.OptionCisincorrectbecauseABSdoesnotreducestoppingdistancesonwetroads;ithelpsmaintaincontrolduringbraking.OptionDisincorrectbecauseABSdoesnotenhanceacceleration.7.A解析：Thethrottlebodyinagasolineenginecontrolstheflowofairintotheengine,therebyregulatingenginepoweroutput.Byadjustingtheamountofairenteringtheengine,thethrottlebodyaffectsengineperformanceandfuelefficiency.OptionBisincorrectbecausethethermostatregulatesthetemperatureoftheenginecoolant.OptionCisincorrectbecausetheignitionsystemmanagestheelectricalconnectionstothesparkplugs.OptionDisincorrectbecausethefuelpressureregulatoradjuststhepressureofthefuelinjectors.8.C解析：Dieselenginesuseglowplugstopreheatthecombustionchambers,makingiteasiertostarttheengineincoldconditions.Sparkplugsareusedingasolineenginestoignitetheair-fuelmixture.OptionAisincorrectbecausesparkplugsarenotusedindieselengines.OptionBisincorrectbecausefuelinjectorsareusedtoinjectfuelintothecombustionchamber,nottostarttheengine.OptionDisincorrectbecauseignitioncoilsareusedingasolineengines,notdieselengines.9.C解析：Hydrolockoccurswhenwaterenterstheengine'scylindersduringoperation,causingtheenginetoseize.Thiscanhappenifwaterenterstheenginethroughacrackedcylinderheadorblock.OptionAisincorrectbecausehydrolockisnotrelatedtothecoolingsystem.OptionBisincorrectbecausehydrolockisnotcausedbythickoil.OptionDisincorrectbecausehydrolockisnotrelatedtohydrauliclifters.10.B解析：Aturbochargercompressesintakeairandforcesitintotheengine'scombustionchambers,increasingpoweroutput.Thisprocessisknownasforcedinduction.OptionAisincorrectbecauseturbochargersdonotincreaseenginedisplacement.OptionCisincorrectbecauseturbochargersdonotreduceenginefriction.OptionDisincorrectbecauseturbochargersdonotaltertheengine'scompressionratio.11.B解析：ThePCV(PositiveCrankcaseVentilation)valveventscrankcasegasesbackintotheintakemanifoldforrecirculation,helpingtoreduceemissionsandpreventoilcontamination.OptionAisincorrectbecausethePCVvalvedoesnotexpelexcessairfromthecoolingsystem.OptionCisincorrectbecausethePCVvalvedoesnotregulateoilpressure.OptionDisincorrectbecausethePCVvalvedoesnotcontrolfuelflowtotheinjectors.12.B解析：Thealternatorgenerateselectricitytochargethebatteryandpowerthevehicle'selectricalsystemwhiletheengineisrunning.OptionAisincorrectbecausethealternatordoesnotcompressairfortheairconditioningsystem.OptionCisincorrectbecausethefuelinjectionsystemisregulatedbytheenginecontrolunit.OptionDisincorrectbecausethetransmissioncontrolmodulecontrolstheshiftingofthetransmission.13.B解析：Theairfilterremovescontaminantsfromtheintakeair,preventingthemfromenteringtheengine'scombustionchambers.Thishelpsmaintainengineperformanceandlongevity.OptionAisincorrectbecausetheairfilterdoesnotcooltheengine'scoolant.OptionCisincorrectbecausetheairfilterdoesnotlubricatemovingparts.OptionDisincorrectbecausetheairfilterdoesnotremovewaterfromthecoolingsystem.14.B解析：Adieselparticulatefilter(DPF)capturesandstoresparticulatematterfromtheexhaust,reducingemissions.Thisisparticularlyimportantforheavy-dutyvehiclesandsomepassengercars.OptionAisincorrectbecausetheDPFdoesnotburnoffparticulatematter.OptionCisincorrectbecausetheDPFdoesnotrecirculateexhaustgases.OptionDisincorrectbecausetheDPFdoesnotconvertnitrogenoxides.15.B解析：Thefuelpumpdeliversfuelfromthetanktotheengine'sfuelinjectors,ensuringasteadysupplyoffuelforcombustion.OptionAisincorrectbecausethefuelpumpdoesnotcompressair.OptionCisincorrectbecausethefuelpumpdoesnotregulateoilpressure.OptionDisincorrectbecausethefuelpumpdoesnotcontroltheflowofcoolant.16.A解析：Atimingbeltismadeofrubberandisusedinmanygasolineengines,whileatimingchainismadeofmetalandisusedinsomegasolineanddieselengines.OptionBisincorrectbecausetimingbeltsandchainscanbeusedinbothgasolineanddieselengines.OptionCisincorrectbecausetimingchainsaregenerallymoreprecisethantimingbelts.OptionDisincorrectbecausetimingchainsaregenerallymoredurablethantimingbelts.17.B解析：Sparkplugsignitetheair-fuelmixtureinagasolineenginewithanelectricspark,allowingtheenginetorun.OptionAisincorrectbecausesparkplugsdonotcompresstheair-fuelmixture.OptionCisincorrectbecausesparkplugsdonotregulateoilpressure.OptionDisincorrectbecausesparkplugsdonotcooltheengine'scoolant.18.C解析：Thecatalyticconverterconvertsharmfulexhaustgases(carbonmonoxide,hydrocarbons,andnitrogenoxides)intolessharmfulsubstances(carbondioxide,water,andnitrogen)throughchemicalreactions.Thisprocesshelpsreduceemissionsandmeetenvironmentalstandards.OptionAisincorrectbecausethecatalyticconverterdoesnotconvertunburnedhydrocarbonsintocarbondioxide.OptionBisincorrectbecausethecatalyticconverterdoesnotcaptureandstoreparticulatematter.OptionDisincorrectbecausethecatalyticconverterdoesnotrecirculateexhaustgases.19.A解析：TheA/Ccompressorcompressesandcirculatesrefrigerantthroughtheairconditioningsystem,coolingthecabinofthevehicle.OptionBisincorrectbecausetheA/Ccompressordoesnotcompressairintake.OptionCisincorrectbecausetheA/Ccompressordoesnotregulateoilpressure.OptionDisincorrectbecausetheA/Ccompressordoesnotcontrolfuelflowtotheinjectors.20.B解析：Hybridvehiclescombineelectricmotorsandgasolineenginestoimprovefuelefficiencyandreduceemissions.Thisdualpowertrainsystemallowsforbetterperformanceandlowerfuelconsumptioncomparedtotraditionalgasolinevehicles.OptionAisincorrectbecausehybridvehiclescanusegasolineenginesinadditiontoelectricmotors.OptionCisincorrectbecausehybridvehiclesgenerallyrequirelessfrequentoilchangesthantraditionalvehicles.OptionDisincorrectbecausehybridvehiclescanhavelargerfueltankstoaccommodateboththegasolineengineandtheelectricbattery.二、填空题答案及解析1.Filtration解析：Filtrationistheprocessofremovingcontaminantsfromtheair-fuelmixtureintheenginetopreventdamagetoenginecomponentsandensureoptimalperformance.2.Throttlebody解析：Thethrottlebodyregulatestheflowofairintotheengine,therebycontrollingenginepoweroutputandfuelefficiency.3.EGR(ExhaustGasRecirculation)system解析：TheEGRsystemrecirculatesexhaustgasesbackintothecombustionchambertoreducenitrogenoxideemissionsbyloweringcombustiontemperatures.4.ABS(Anti-lockBrakingSystem)解析：TheABSpreventsthewheelsfromlockingupduringemergencybraking,allowingthedrivertomaintaincontrolofthevehicle.5.Coolant解析：Coolantisthefluidusedtotransferheatfromtheenginetotheradiator,helpingtoregulateenginetemperature.6.Turbocharger解析：Theturbochargercompressesintakeairtoboostpoweroutputinaturbochargedengine,improvingperformance.7.PCVvalve解析：ThePCVvalveventscrankcasegasesbackintotheintakemanifoldforrecirculation,helpingtoreduceemissionsandpreventoilcontamination.8.Generateelectricitytochargethebatteryandpowertheelectricalsystem解析：Theprimaryfunctionofthealternatoristogenerateelectricitytochargethebatteryandpowerthevehicle'selectricalsystemwhiletheengineisrunning.9.Airfilter解析：Theairfilterremovescontaminantsfromtheintakeair,preventingthemfromenteringtheengine'scombustionchambers.10.Dieselparticulatefilter(DPF)解析：TheDPFcapturesandstoresparticulatematterfromtheexhaust,reducingemissionsandmeetingenvironmentalstandards.11.Engineoil解析：Engineoillubricatestheengine'smovingparts,reducingfrictionandwear.12.Fuelpump解析：Thefuelpumpdeliversfuelfromthetanktotheengine'sfuelinjectors,ensuringasteadysupplyoffuelforcombustion.13.Sparkplugs解析：Sparkplugsignitetheair-fuelmixtureinagasolineenginewithanelectricspark,allowingtheenginetorun.14.Catalyticconversion解析：Catalyticconversionistheprocessofconvertingharmfulexhaustgasesintolessharmfulsubstancesthroughchemicalreactionsinthecatalyticconverter.15.A/Ccompressor解析：TheA/Ccompressorcompressesandcirculatesrefrigerantthroughtheairconditioningsystem,coolingthecabinofthevehicle.16.Hybridpowertrainsystem解析：Thehybridpowertrainsystemcombineselectricmotorsandgasolineenginesforimprovedfuelefficiencyandreducedemissions.17.Transmissionfluid解析：Transmissionfluidtransfersheatfromtheenginetothetransmissionandlubricatesmovingparts.18.Oilpressuresensor解析：Theoilpressuresensormonitorstheengine'soilpressureandalertsthedriverifthereisanissue.19.Fuelinjectionsystem解析：Thefuelinjectionsystemcontrolstheflowoffueltotheinjectors,ens