Search for dissertations about: "car exhaust"

Showing result 1 - 5 of 32 swedish dissertations containing the words car exhaust.

  1. 1. Catalysts for Car Exhaust: Oxygen Storage in Platinum/Ceria and Mass Transfer in Monoliths

    Author : Anna Holmgren; [1998]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; car exhaust; catalysis; flow distribution; mass transfer; oxygen storage capacity OSC ; ceria; computational fluid-dynamics simulations; monolith catalyst; platinum; oxygen transport;

    Abstract : In this work, the oxygen storage/release in Pt/ceria catalysts has been investigated both experimentally and theoretically. Moreover, the flow distribution and mass transfer in monolith catalysts for car-exhaust purification have been studied. READ MORE

  2. 2. Monolith catalysts for car exhaust : experimental and theoretical studies of oxygen storage, flow and mass transfer

    Author : Anna Holmgren; [1997]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; monolith; car-exhaust; CFD simulations; turbulence; Pt CeO2 Al2O3; catalysis; effective diffusivity; oxygen storage; flow distribution; mass transfer;

    Abstract : .... READ MORE

  3. 3. Studies of MISiC-FET sensors for car exhaust gas monitoring

    University dissertation from Institutionen för fysik, kemi och biologi

    Author : Helena Wingbrant; Anita Lloyd Spetz; Martin Eickhoff; [2005]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; field effect sensor; gas detection; selective catalytic reduction; lambda; cold start; ammonia; silicon carbide; engine exhaust; NATURAL SCIENCES Physics; NATURVETENSKAP Fysik;

    Abstract : The increasing size of the car fleet makes it important to find ways of lowering the amounts of pollutants from each individual diesel or gasoline engine to almost zero levels. The pollutants from these engines predominantly originate from emissions at cold start, in the case when gasoline is utilized, and high NOx emissions and particulates from diesel engines. READ MORE

  4. 4. Particle emissions from car brakes The influence of contact conditions on the pad-to-rotor interface

    University dissertation from Institutionen för fysik, kemi och biologi

    Author : Mattia Alemani; Ulf Olofsson; Jens Wahlström; Anders Söderberg; Staffan Jacobson; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Car brakes emissions; transition temperature; working conditions; environmental design; pin-on-disc; Bilbromsutsläpp; övergångstemperatur; arbetsförhållanden; miljödesign; pinne-på-skiva; Machine Design; Maskinkonstruktion;

    Abstract : Due to their adverse health effects emissions have been regulated for over three decades. Brake wear particulate matter is the most important non-exhaust source, however current knowledge is mainly limited to observational studies. READ MORE

  5. 5. Laboratory measurements of airborne emissions from car brakes for clean air

    University dissertation from Stockholm : KTH Royal Institute of Technology

    Author : Guido Perricone; Ulf Olofsson; Fulvio Amato; [2020]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Automotive brake; non-exhaust emissions; inertia brake dynamometer; airborne particles; PM10; PN; isokinetic sampling; Rebrake; volatiles; real driving cycle; car brake emission factors; running-in.; Bilbroms; icke-avgasemissioner; skivbromsdynamometer; luftburna partiklar; PM10; PN; isokinetisk provtagning; Rebrake; volatiler; verkliga körcykler; emissionsfaktorer; in-körning.; Machine Design; Maskinkonstruktion;

    Abstract : Brake systems are used to safely stop vehicles. The brake pads are pressed against the brake disc, transforming the kinetic energy of the vehicle into heat to be dissipated. READ MORE