Sökning: "Crankshaft surface"

Hittade 4 uppsatser innehållade orden Crankshaft surface.

  1. 1. Laser Hardening for Application on Crankshaft Surfaces Using Non-Uniform Beam Intensity Distributions

    Uppsats för yrkesexamina på avancerad nivå, Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

    Författare :Victor Rönnerfjäll; [2019]
    Nyckelord :Laser transformation hardening; Crankshaft surface; Non-uniform beam intensity distributions; Hypoeutectoid steel; Microalloyed steel; 44MnSiVS6;

    Sammanfattning : A controlled continuous laser output using a circular geometry with a gaussian intensity distribution was used to harden the surface of a particular metal specimen (44MnSiVS6). Said beam operated within a relatively small power interval, just barely past the melting point. LÄS MER

  3. 2. Tribological performance of different crankshaft bearings in conjunction with textured shaft surfaces

    Master-uppsats, Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

    Författare :Lakshminarayana Reddy Tamatam; [2017]
    Nyckelord :Tribology; journal bearings; engine main bearings; automotive; friction; wear;

    Sammanfattning : Improving vehicle efficiency and complying to stricter exhaust emission legislations are some of the driving factors to advancement in technology of engine components. The main bearings in an internal combustion engine contribute significant amount of friction. These bearings support engine loads and allow free rotation of the crankshaft. LÄS MER

  4. 3. Journal Bearing Friction Optimization

    Master-uppsats, Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

    Författare :Szerena - Krisztina Ujvari; [2016]
    Nyckelord :tibology; engine main bearings; friction and wear; optimization;

    Sammanfattning : Engine downsizing, improving fuel efficiency while satisfying the environmental legislations are one of the main driving forces in developing new solutions for passenger cars.Engine main bearings, are journal bearings which support the crankshaft and operate principally in full film lubrication. LÄS MER

  5. 4. New materials in sliding bearings

    Master-uppsats, KTH/Maskinkonstruktion (Inst.)

    Författare :Johan Salomon; [2015]
    Nyckelord :Sliding bearing; wear; start-stop; hydrodynamic lubrication; Glidlager; nötning; start stopp; fullfilmssmörjning;

    Sammanfattning : Increasing demands for lower emissions from heavy trucks and buses creates new demands on the components in the engine. One such component is the journal bearing which is used at many positions in the engine. Implementing a start-stop system in a truck engine leads to that the crankshaft journal bearing gets worn out too quickly. LÄS MER