Volvo D13J - Page 48

42VOLVOEngines
CAUTION
DonotputdieselfuelintheAftertreatment
DEFtank.Dieselfuel,ifsprayedintothe
hotexhaustalongwiththeDEF,could
igniteexplosivelycausingareresulting
inpersonalinjuryordamagetotheexhaust
system.
TheVOLVOSCRsystemissimpleandeffective,withfewcomponents.Itconsistsofa
AftertreatmentDEFtankpositionednearthestandarddieseltank,plusaAftertreatment
DEFpump,AftertreatmentDEFDosingunitandSCRcatalyst.Theadvantageofusing
DEFisthatitenablestheenginetouselessEGR--andhigheroxygenlevels--forbetter
combustion,whilemeetingtheEPAnear-zeroNOxemissionsrequirementof0.2g/hp-hr
NOx.ByusingDEF,weavoidthedisadvantagesofincreasingEGRtomassivelevels.This
resultsinbetterfueleconomyfromyourVOLVOengine.
W2055491
VerticalSCR,verticalinlet