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Hittade 2 uppsatser som matchar ovanstående sökkriterier.

1. 1. CFD-simulations of urea-waterspray in an after-treatment systemusing Star-CCM+

   Master-uppsats, KTH/Mekanik

   Författare :Emelie Trigell; [2018]
   Nyckelord :after-treatment systems; selective catalytic reaction SCR ; AdBlue; multiphase flow; multi-component liquid; Unsteady Reynolds Average Navier Stokes RANS ; wall film formation; solid deposits; efterbehandlingssystem; selektiva katalytiska reaktioner; AdBlue; flerfasstr ¨ommning; flerkomponentvätska; Unsteady Reynolds Average Navier Stokes; väggfilm; avlagringar;

   Sammanfattning : The legislation has forced the vehicle industry to reduce tail-end emissions. The air pollutant nitrogen oxide (NOX) has been shown to have a negative impact on human health and the environment. One of the key technologies to reduce the levels of NOX emitted from a vehicle is by implementing an after-treatment system. LÄS MER

3. 2. Investigating Urea Vaporization in a Controlled Environment Using Infrared Thermography

   Master-uppsats, KTH/Skolan för kemivetenskap (CHE)

   Författare :Henrik Grimler; [2015]
   Nyckelord :AdBlue; Infrared; Film; Evaporation; Deposits;

   Sammanfattning : As the emission legislation becomes more stringent, higher demands are put on the aftertreatment system in trucks. For dealing with nitrous oxides, AdBlue® (urea–water solution) is injected into the exhausts which evaporates and reduces nitrous oxides to nitrogen. LÄS MER