奥迪全系自学手册（SSP）：SSP622_Second generation Audi clean diesel_EN.pdf

《奥迪全系自学手册（SSP）：SSP622_Second generation Audi clean diesel_EN.pdf》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。

1、SelfStudyProgramme622ForinternaluseonlySecondgenerationAudicleandieselAudiServiceTrainingTheSCRsystem-thekeytoachievingthetougherEU 6-1(W),BIN 5,Tier 2andLEV IIIemissionstandardsReducingthenitrousoxidecontent(NO)inexhaustemissionsisaAdBlue®ismanufacturedbyasolutionofachemicalcalledureaxglobalchall

2、engefacingautomobilemanufacturers,whoare(alsocalledcarbamide)inwater.UreaisasyntheticproductwhichrequiredtomeetthenewstatutorylimitssetbytheEuro6stand-usuallyismadefromnaturalgasandusedinfertilizers,plasticsardandequivalentinternationalregulationsonexhaustemissionandcosmetics.AdBlue®isnotmadefromr

3、ecycledagriculturallimits.products.ForexhaustgasaftertreatmentintheAdBlue®SCRAmodern"SelectiveCatalyticReduction"(SCR)emissioncontrolsystem,theexhaustsystemrequiresadditionalcomponentssuchsystemutilisesthechemicalsynthesisproductofurea(AdBlue®)astheheatedcatalyst1),thewater-cooledmeteringvalve,the

4、toreduceNOemissions.dieselparticulatefilterwithintegratedDeNOcatalyticconverterxxInSCRsystems,AdBlue®reactswiththeNOemissionstoproduceandtheammoniablockingcatalyticconverter.xwatervapourandnitrogen.NOisshortfornitrousoxidegases;xtheyoccurduringthecombustionprocessindieselenginesandareAdBlue®isareg

5、isteredtrademarkofVerbandderAutomobilindus-reducedbymeansofSCRtechnology.''trie(VDA).1)Installedinalimitednumberofmodelsonly.622_002622_023Learningobjectivesofthisselfstudyprogramme:ThisSelfStudyProgrammedescribesthedesignandfunctionofan•Whatisthefunctionoftheheatedcatalyst?exhaustgasaftertreatmen

6、tsystemadaptedfortheuseofAdBlue®•Whichnewsensorsareintegratedinthereductionsystem?reducingagent.OnceyouhavecompletedthisSelfStudyPro-•Whydoestheexhaustgastemperaturehavetoberelativelygrammeyouwillbeabletoanswerthefollowingquestions:high?•Whatisthefunctionoftheammoniablockingcatalyticcon-verter?2Co

7、ntentsIntroductionEmissionstandard__________________________________________________________________________________________________________________________________________4AudimodelsbasedontheModularLongitudinal