Essays about: "Aftertreatment system"

Showing result 11 - 15 of 19 essays containing the words Aftertreatment system.

1. 11. Numerical Optimal Control of Hybrid Electric Trucks : Exhaust Temperature, NOx Emission and Fuel Consumption

   University essay from Linköpings universitet/Fordonssystem

   Author : Fredrik Andersson; Hampus Andersson; [2018]
   Keywords : Numerical optimal control; HEV; Diesel electric hybrid truck; Exhaust temperature; Emissions; NOx; SCR;

   Abstract : The controls for a parallel hybrid electric truck are optimized using numerical optimal control. Trade-offs between catalyst light-off times, NOx emission and fuel consumption have been investigated for cold starts at two operating points, as well as temperature differences between conventional and hybrid powertrains during WHTC (World Harmonized Transient Cycle). READ MORE

3. 12. Design of Helix-Rotary Evaporator : Concept development, Design and Material selection

   University essay from

   Author : Surafel Tesema; [2018]
   Keywords : Aftertreatment system; SCR; Urea evaporator;

   Abstract : Tougher environmental legislations are a driving force for development of aftertreatment technologies for truck and car exhaust gases. In particular, the emission requirements are high on nitrogen oxides (NOx) and particulate matter. Focus of this thesis work is to develop a component in the exhaust system, a NOx level reduction system. READ MORE

4. 13. Optimization of the AdBlue e vaporation module for Scania V8 engines

   University essay from KTH/Maskinkonstruktion (Inst.)

   Author : Mattia Antoniotti; [2017]
   Keywords : CR; evaporation unit; urea deposits; heat fins; Urea; förångningsmodulen; ureaavlagringar; rörflänsar;

   Abstract : The aftertreatment techniques introduced to follow the emission legislations require a constant improvement process to comply with the gradually more stringent demands. SCR is the system used nowadays to deal with NOx emissions in most heavy-duty vehicles. READ MORE

5. 14. Sulfur tolerance of SCR catalysts : Development of a lab testing method

   University essay from Luleå tekniska universitet/Institutionen för samhällsbyggnad och naturresurser

   Author : Cornelia Lantto; [2017]
   Keywords : ;

   Abstract : NOx emissions from diesel vehicles are a currently well-discussed matter due to the related health and environmental issues. At the same time, diesel vehicles are an important part of transportation in society as diesel engines are more fuel efficient than gasoline engines. READ MORE

6. 15. PILCs for trapping phosphorus in a heavy duty engine exhaust system : An experimental evaluation of the phosphorus sorption capability of different clay materials

   University essay from Uppsala universitet/Strukturkemi

   Author : Anders Kvarned; [2016]
   Keywords : PILC; PCH; phosphorus sorption; exhaust treatment; catalyst poisoning;

   Abstract : In order to fulfil the requirements in the EURO VI standard, regulating emissions from heavy duty vehicles, the exhaust aftertreatment system needs to maintain its efficiency for at least seven years or 700 000 km. In diesel applications the diesel oxidation catalyst (DOC) is located closest to the engine and is thus the most vulnerable to poisoning contaminants, such as phosphorus originating from fuel and oil additives, which deactivates the catalyst. READ MORE