Sökning: "gear oil"

Visar resultat 6 - 10 av 31 uppsatser innehållade orden gear oil.

  1. 6. Comparative life cycle assessment of lubricating greases for nut-runners used in industrial assembly lines

    Master-uppsats, KTH/Hållbar utveckling, miljövetenskap och teknik

    Författare :Pranav Mithra; [2020]
    Nyckelord :Systems thinking; petroleum; manufacturing; environmental impacts; molybdenum; base oils; additives; thickeners;

    Sammanfattning : Greases are used extensively in almost all areas of life. Considering the fact that they are used in sparing quantities in most applications, the environmental impacts associated with these greases can range from different magnitudes based on the constituents of the grease. LÄS MER

  3. 7. Modeling, Simulation and Correlation of Drag losses in a Power Transfer Unit of an All- Wheel Drive System

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

    Författare :Balaji Srinivasan Venkatesan; [2020]
    Nyckelord :1-D simulation; System simulation; ROMAX Energy; LMS AMESim; Power loss; Hypoid gear; Power Transfer Unit; Efficiency and Drag Loss Tests; 1-D simulering; systemsimulering; ROMAX Energy; LMS AMESim; effektförlust; hypoidväxel; kraftöverföringsenhet; effektivitet och dragförlusttester;

    Sammanfattning : A Power Transfer Unit (PTU) of an All-Wheel Drive System is a hypoid gear transmission unit that distributes the power from the vehicle transmission to all wheels of the vehicle. This thesis aims at increasing the fidelity of the analytical power loss calculation methods through test data correlation and develop a 1D simulation model that can be used to evaluate the drag losses in the PTU at early design stages. LÄS MER

  4. 8. Planetary Gear Analysis : deformation induced misalignment and optimization

    Master-uppsats, KTH/Maskinkonstruktion (Inst.)

    Författare :Martin Jonsson; [2020]
    Nyckelord :FEM; gears; KISSsoft; misalignment; planetary gears; FEM; KISSsoft; kugghjul; planetväxlar; vinkelfel;

    Sammanfattning : A handheld heavy-duty nut runner, commonly used to assemble windmills and oil pipe lines, and capable of producing 4100 Nm of torque, experiences low cycle fatigue and usually fails after 20 000 cycles at the specified torque. A full assembly Finite element model of the last stage of the four-stage planetary gearbox is constructed and simulated over one complete load cycle. LÄS MER

  5. 9. Development of Vessel Phantoms for Ultrasound Methods

    Master-uppsats, Lunds universitet/Avdelningen för Biomedicinsk teknik

    Författare :Benjamin Meirza; [2018]
    Nyckelord :Longitudinal movement of the arterial wall; Vasa vasourom; Micro vessles; SEBS; Ultrasound phantom.; Technology and Engineering;

    Sammanfattning : Phantoms mimicking the specific mechanical and acoustic properties of human tissues are essential in the development and evaluation of novel ultrasound methods. In this work, various ultrasound phantoms are proposed to be used in the development of ultrasound methods to investigate the arterial walls longitudinal movements influence on the vasa vasorum circulation. LÄS MER

  7. 10. A parametric study of oil-jet lubrication in gear wheels

    Master-uppsats, Linköpings universitet/Mekanisk värmeteori och strömningslära

    Författare :Dona Biju; [2018]
    Nyckelord :Jet lubrication; velocity ratio; inlet size; heat transfer;

    Sammanfattning : A parametric study of oil-jet lubrication in gear wheels is conducted using Computational Fluid Dynamics (CFD) to study the effect of the different design parameters on the cooling performance in a gearbox. Flow in oil jet lubrication is found to be complex with the formation of oil ligaments and droplets. Various hole radii of 1.5, 2 and 2. LÄS MER