Sökning: "after-treatment systems"

Visar resultat 16 - 20 av 35 uppsatser innehållade orden after-treatment systems.

  1. 16. Development of a Methodology for Efficient FEM Pre-processes to Aid Simulation-driven Design

    Master-uppsats, Linköpings universitet/Maskinkonstruktion

    Författare :Mattias Bäckman; Josef Kling; [2018]
    Nyckelord :FEM; Welds; Automation; MDO; HyperMesh; Simulation-driven design; Design Automation; Pre-processes; Mesh;

    Sammanfattning : With both tougher competition and legislations, companies always strive to improve their products while cutting unnecessary costs. This master’s thesis investigates if the after-treatment systems department at the heavy-duty vehicle company Scania CV AB in Södertälje, Sweden can improve their development process by implementing automated FEM pre-processes for welded sheet metal components. LÄS MER

  3. 17. Suitable treatment of source separated greywater for discharge into an Urban Environment

    Master-uppsats, Lunds universitet/Kemiteknik (CI)

    Författare :Evalyne Cathy Arinaitwe; [2018]
    Nyckelord :water engineering; environmental engineering; avloppsteknik; vattenförsörjningsteknik; Technology and Engineering;

    Sammanfattning : It can no longer be refuted that greywater reuse is paramount to curbing the persistent global water crisis. Of the domestic wastewaters, greywater is less polluted than blackwater, but treatment is still necessary to make it safe for reuse. The most common greywater reuse application is toilet flushing. LÄS MER

  4. 18. 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

  5. 19. Effect of Biofuel Impurities on the Diesel Oxidation Catalyst

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

    Författare :Liene Kienkas; [2017]
    Nyckelord :DIESEL OXIDATION CATALYST; POISONING; PHOSPHORUS; SODIUM; CALCIUM; MATERIAL CHARACTERIZATION; ACTIVITY TESTING;

    Sammanfattning : Scania provides sustainable transport systems powered by bioethanol, biogas, biodiesel along with hybrid and conventional solutions. Today Scania offers the largest variety of engines operating on alternative fuels in the market. The number of the alternative fuel operated vehicles sold in 2016 increased by 40 % [1]. LÄS MER

  7. 20. Storm water treatment in a multi-step system compared to a single-step system

    Master-uppsats, SLU/Dept. of Soil and Environment

    Författare :Maria Schoeps; [2017]
    Nyckelord :storm water; storm water treatment; open storm water system; storm water dams; multi-step treatment; StormTac; pollutant load;

    Sammanfattning : Urban areas are expanding at an increasing pace around the world as well as surfaces with impervious layers, such as streets and rooftops. Precipitation, melt water and water from human activities, which temporarily flow on these surfaces are defined as storm water. LÄS MER