Sökning: "catalytic converter"

Visar resultat 1 - 5 av 13 uppsatser innehållade orden catalytic converter.

  1. 1. Application of Fourier Transforms to time-resolved ambient pressure spectroscopy operando studies of CO oxidation over Pt(111)

    Master-uppsats, Lunds universitet/Fysiska institutionen; Lunds universitet/Synkrotronljusfysik

    Författare :Grigore-Leon Ratiu; [2024]
    Nyckelord :Physics and Astronomy;

    Sammanfattning : The study of heterogeneous catalysis has important implications in increasing the efficiency of industrial processes and in reducing the emissions of greenhouse gases from sources such as automobiles. A reaction with high industrial relevance is the oxidation of CO on noble metal catalysts. LÄS MER

  3. 2. Acoustic Characterization of Catalyst

    Kandidat-uppsats, KTH/Skolan för teknikvetenskap (SCI)

    Författare :Surachit Dokson; [2023]
    Nyckelord :;

    Sammanfattning : The WHO has set a sound level threshold of 55 dB, beyond which noise is considered harmful to humans when exposed for an extended period of time. It is, however, estimated by the European Environmental Agency that over 110 million people in the EU are regularly exposed to levels of traffic noise above 55 dB. LÄS MER

  4. 3. Återvinning av platinametaller ur fordons katalysatorer : Litteraturstudie om återvinningsprocesser av katalysatorer inom fordonsindustrin med avseende på miljöpåverkan

    Kandidat-uppsats, KTH/Skolan för industriell teknik och management (ITM)

    Författare :Jack Danha; Zahid Abedin; [2023]
    Nyckelord :;

    Sammanfattning : Antalet bilar fortsätter att öka kraftigt i världen vilket skapar stora mängder av utsläpp som orsakar allvarliga miljöproblem. För att minska utsläppet av fordon med förbränningsmotorer används fordons katalysatorer. LÄS MER

  5. 4. FE Simulation of protective insulation of catalysts in exhaust after-treatment systems of trucks and buses : Investigation and characterization of catalytic converter support mat material for accurate modeling in finite element simulations

    Master-uppsats,

    Författare :Manroop Bhattasali; [2022]
    Nyckelord :Catalytic converter; packaging mats; support mats; compression; friction; hyperelastic; hyperfoam; viscoelastic; canning; finite element;

    Sammanfattning : The increase of new and ever more stringent emission legislation has brought about with it a surge in the demand for more sustainable automotive solutions. This has particularly been the case for automobiles, including heavy-duty vehicles like trucks and buses, with internal combustion engines, which now require the design and manufacturing of more durable and reliable components. LÄS MER

  7. 5. Exhaust Temperature Modeling and Optimal Control of Catalytic Converter Heating

    Master-uppsats, Linköpings universitet/Fordonssystem

    Författare :Victor Petersson; [2019]
    Nyckelord :cold-start; catalyst heating; ignition retardation; GDI;

    Sammanfattning : After reaching its light-off temperature, the catalytic aftertreatment system plays a major part in maintaining emissions at low levels for vehicles equipped with combustion engines. In this thesis, modelling of the exhaust gas temperature is investigated along with optimal control strategy for variable ignition and exhaust valve opening angles for optimal catalytic converter heating. LÄS MER