Sökning: "ignition timing"

Visar resultat 6 - 10 av 24 uppsatser innehållade orden ignition timing.

  1. 6. Simulation and validation of in-cylinder combustion for a heavy-duty Otto gas engine using 3D-CFD technique

    Master-uppsats, KTH/Förbränningsmotorteknik

    Författare :Jacob Arimboor Chinnan; [2018]
    Nyckelord :CFD; AVL FIRE; Otto Gas Engine; Combustion Modelling; ECFM Model; Flame Tracking Particle Model; Flame Tracking Model; G-Equation Model; Ignition Models.; CFD; AVL FIRE; Otto Gasmotor; Förbränningsmodellering; ECFM-modell; Flamspårningspartikelmodell; Flamspårningsmodell; G-ekvationsmodell; Tändningsmodeller;

    Sammanfattning : Utsläpp från bilar har spelat stor roll de senaste decennierna. Detta har lett till ökad användning av Otto gasmotorer som använder naturgas som bränsle. Nya motordesigner behöver optimeras för att förbättra motorens effektivitet. LÄS MER

  3. 7. Knock Detection in a Two-Stroke Engine to be Used in the Engine Management System

    Master-uppsats, Fordonssystem; Tekniska högskolan

    Författare :Filip Höglund; [2014]
    Nyckelord :knock detection; knock control; lambda control; two-stroke engine; engine control;

    Sammanfattning : Engine knock has long been a well recognized phenomenon in the automotive industry. Detecting engine knock opens up the possibility for an indirect feedback of the engine's internal combustion without installing a pressure transducer inside the cylinder. LÄS MER

  4. 8. Partially Premixed Combustion (PPC) for low loadconditions in marine engines using computationaland experimental techniques

    Master-uppsats, KTH/Mekanik

    Författare :Kendra Shrestha; [2013]
    Nyckelord :PPC; CFD; Split Injection; Ignition delay; EGR;

    Sammanfattning : Diesel Engine has been the most powerful and relevant source of power in the automobile industryfor decades due to their excellent performance, efficiency and power. On the contrary, there arenumerous environmental issues of the diesel engines hampering the environment. LÄS MER

  5. 9. Peat stratigraphical study of hydrological conditions at Stass Mosse, southern Sweden, and the relation to Holocene bog-pine growth

    Master-uppsats, Lunds universitet/Geologiska institutionen

    Författare :Linda Adamsson; [2013]
    Nyckelord :tall; mosse; klimatförändringar; palaeoecology; macrofossil analysis; pines; climate change; bog; makrofossilanalys; paleoekologi; Earth and Environmental Sciences;

    Sammanfattning : Sammanfattning: Torvhorisonter med stora mängder subfossila stubbar och rötter av tall (Pinus sylvestris) förekommer ofta i nordeuropeiska torvmossar. De visar att mossarna varit tallbevuxna under delar av Holocen. LÄS MER

  7. 10. A multi-proxy study of a Holocene peat sequence on Nightingale Island, South Atlantic

    Master-uppsats, Lunds universitet/Geologiska institutionen

    Författare :Hanna Lindvall; [2011]
    Nyckelord :Nightingale Island; South Atlantic; Holocene; peat; C N; environmental reconstruction; interglacial bipolar see-saw; Sydatlanten; Holocen; torv; miljörekonstruktion; interglacial gungbrädeseffekt; Earth and Environmental Sciences;

    Sammanfattning : Nightingale Island is situated at 37°S in the central part of the South Atlantic Ocean, which is a sensitive location for variations within the Atlantic Meridional Overturning Circulation (AMOC) and the Southern Hemisphere Westerlies (SHW) wind belt. A peat sequence from the wetland 2nd Pond has been investigated with emphasis on the composition of the deposits, loss on ignition (LOI), total Carbon (TC), Nitrogen (N), biogenic Silica (BSi), magnetic susceptibility (MS), diatom counting and macrofossil analysis. LÄS MER