Volvo EPA2007 D13F - Compressor Discharge Temperature Sensor; Cooled Exhaust Gas Recirculation (CEGR); Cordierite; Diesel Particulate Matter

170Glossary
CompressorDischargeTemperatureSensor
MountedbetweentheturbochargercompressorhousingandCAC,detectscompressor
dischargeairtemperatureandrelaysthisvaluetotheEECU.
CooledExhaustGasRecirculation(CEGR)
Asystemwherebyapre-determinedamountofexhaustgasisdivertedthroughaheat
exchangerwhereitiscooledandsenttotheinletmanifoldforreintroductionintothe
combustionchambers.Addingthecooledexhaustgasestothecombustiblefueland
airmixturelowerstheoverallcombustiontemperaturesforreducedformationof
nitrogenoxides(NOx).
Cordierite
Aceramicmaterialconstructedtobeusedasasubstrateindieseloxidationcatalysts.
Withadditionalprocessing,itmayalsobeusedasadieselparticulatelter.
DieselParticulateMatter
Thecomplexmixtureofextremelyneparticlesandliquiddropletsthatare
dischargedbyanoperatingdieselengine.Thechemicalcompositionscanbebroken
downtosafersubstances.
DifferentialPressureSensors
Thesearedevicesdesignedtoreadair(gas)pressureattwopointsinthepathofthe
owandreportthevaluesforuseinalgorithmsintheEECU.
DischargeRecirculationValve(DRV)
Adeviceusedtoreturnsomeoftheturbochargeroutputairbacktotheturbocharger
toraisetheexhausttemperaturewhenneededforactiveregenerationofthediesel
particulatelter.