Sökning: "Combustion"

Visar resultat 1 - 5 av 1037 avhandlingar innehållade ordet Combustion.

  1. 1. Combustion Valve Wear A Tribological Study of Combustion Valve Sealing Interfaces

    Detta är en avhandling från Uppsala : Acta Universitatis Upsaliensis

    Författare :Peter Forsberg; Uppsala universitet.; [2013]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Combustion valves; wear; tribofilm; test rig; combustion residue; Teknisk fysik med inriktning mot tribomaterial; Engineering Science with specialization in Tribo Materials;

    Sammanfattning : The exhaust valve system of combustion engines experiences a very complex contact situation of frequent impact involving micro sliding, high and varying temperatures, complex exhaust gas chemistry and possible particulates, etc. In addition, the tribological situation in the exhaust valve system is expected to become even worse due to strict future emission regulations, which will require enhanced combustion and cleaner fuels. LÄS MER

  2. 2. Pulsating Combustion - Combustion Characteristics and Reduction of Emissions

    Detta är en avhandling från Division of Energy Economics and Planning, Department of Heat and Power Engineering, Lund University

    Författare :Annika Lindholm; [1999]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Exhaust gas recirculation; NOx; Heat Release; Combustion related radicals; Laser based measurements; Pulsating Combustion; Unsteday Flow; Emissions; Combustion; Energy research; Energiforskning;

    Sammanfattning : In the search for high efficiency combustion systems pulsating combustion has been identified as one of the technologies that potentially can meet the objectives of clean combustion and good fuel economy.Pulsating combustion offers low emissions of pollutants, high heat transfer and efficient combustion. LÄS MER

  3. 3. Computer Modeling of HCCI Combustion

    Detta är en avhandling från Division of Energy Economics and Planning, Department of Heat and Power Engineering, Lund University

    Författare :Roy Ogink; [2004]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; detailed-chemistry; surrogate fuel; homogeneous charge compression ignition; internal combustion engines; modeling; HCCI; gasoline; auto-ignition; combustion;

    Sammanfattning : During the last decade an alternative to conventional internal combustion engines, i.e. spark-ignited and Diesel engines, has been under investigation by an ever-increasing number of research groups. LÄS MER

  4. 4. Co-combustion of biomass and waste fuels in a fluidised bed boiler : fuel synergism

    Detta är en avhandling från Chalmers University of Technology, Dep. Energy and Environment, Div. of Energy Technology

    Författare :Anna-Lena Elled; Högskolan i Borås.; [2008]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; co-combustion; biomass; municipal sewage sludge; fluidised bed; combustion; Energi och material; fluidised bed combustion; straw; deposit formation; ash composition; wood;

    Sammanfattning : The objective of this work was to study co-combustion of biomass and waste fuels in a circulating fluidised bed boiler and to detect synergy effects with respect to flue gas composition and ash formation during boiler operation. It was also the aim to perform supplementary thermodynamic equilibrium calculations in order to support the experimental results. LÄS MER

  5. 5. Torque based combustion property estimation and control for diesel engines

    Detta är en avhandling från Chalmers University of Technology, Dep. Energy and Environment, Div. of Energy Technology

    Författare :Mikael Thor; [2012]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Crankshaft torque measurements; Engine control; Combustion modeling; Diesel engines; Closed-loop control; Internal combustion engines; Combustion property estimation; Combustion phasing;

    Sammanfattning : Modern diesel engines are becoming increasingly complex as a result of demands on the reduction of both fuel consumption and emissions. This escalating complexity not only applies to the engine itself, but also to its control system. LÄS MER