Volvo EPA2007 D13F - Glossary 169; Glossary of Terms; Active Regeneration; Aftertreatment Fuel Injector (AFI)

Glossary169
GLOSSARYOFTERMS
ActiveRegeneration
Cleaningadieselparticulatelterusinganauxiliaryheatingmechanismtoachieve
optimumtemperatureforrapidlyinducingchemicalchangesintheparticulatematter
trappedinthelter.
AftertreatmentFuelInjector(AFI)
Adevicetoinjectfuelintotheexhauststreambetweentheturbochargerandthe
dieselparticulatelterwhereitisignited.Thiscreatesthehightemperatureneeded
toenablethesystemtoreducenoxiousexhaustemissionstotheminimumandto
regeneratetheparticulatelter.
Ash
Thenoncombustibleportionofdieselparticulatematter.Dieselfuelproduceslittle
ash,butcrankcaselubricantandfuel-bornecatalystsproduceconsiderableash.
AtmosphericPressureSensor
AsensorincorporatedintotheEECUthatdetectsatmospheric(barometric)pressure
andrelaysthisvaluetotheEECU.Thispressureisaffectedbyaltitude.
CarbonMonoxide(CO)
Anodorless,colorlessgasresultingfromincompletecombustionofhydrocarbons;
foundindieseltruckexhaust;poisonoustohumansandanimals.
Catalyst
Asubstancethatpromotesorprovokeschemicalchangeatadifferentrateordifferent
temperaturethanotherwisepossible.
CombustionAirTemperatureandHumiditySensor
Mountedintheairintakebetweentheaircleanerandtheturbocompressorhousing,
detectsoutsideairtemperatureandhumidityandrelaysthesevaluestotheEECU.