Sökning: "rullmotstånd"

Visar resultat 1 - 5 av 20 uppsatser innehållade ordet rullmotstånd.

  1. 1. Development and implementation of a tram line performance model

    Master-uppsats, KTH/Väg- och spårfordon samt konceptuell fordonsdesign

    Författare :Christian Matz; [2022]
    Nyckelord :tram; Vienna; travel time; tram operation; Spårvägn; Wien; restid; spårvagnstrafik;

    Sammanfattning : Wiener Linien’s tram network is one of the largest and busiest of its kind worldwide. Maintaining and improving the Level of Service (LoS) is one of the major tasks of the operations division. To direct these improvements efficiently to lines and sections of lines in need, tram line performance needs to be assessed. LÄS MER

  3. 2. Development of a Downscaled Hovering Device for a Hospital Bed to Reduce Rolling Resistance

    Master-uppsats, KTH/Skolan för kemi, bioteknologi och hälsa (CBH)

    Författare :Kristian Namrood; [2021]
    Nyckelord :Fall-related injuries; shock absorbing floor; rolling resistance; hospital bed; hovering device;

    Sammanfattning : Fall-related injuries are common problems in elderly care in particular. These can cause brain damage and hip fractures, which in many cases can be serious. To reduce or mitigate the damage, various safety measures have been developed. One of them concerns a change in the surroundings, more specifically, the floor. LÄS MER

  4. 3. Analysis of the energy consumption of the powertrain and the auxiliary systems for battery-electric trucks

    Master-uppsats, KTH/Fordonsdynamik

    Författare :Guanqiao Song; [2020]
    Nyckelord :Battery-electric truck; Energy consumption analysis; Battery loss; PT1 battery model; Power Take Off; Sankey diagram; Direct-Current charging; Batterielektrisk lastbil; Energiförbrukningsanalys; Batteriförlust; PT1 batterimodell; Power Take Off; Sankey diagram; Direct-Current charging;

    Sammanfattning : The electrification of the truck is crucial to meet the strategic vision of the European Union (EU) to contribute to net-zero greenhouse gas emissions for all sectors of the economy and society. The battery-electric truck is very efficient to reduce the emissions and has also a lower Total Cost of Ownership (TCO) compared to diesel trucks. LÄS MER

  5. 4. Shock Absorbing Flooring For Elderly Homes : Study of Shock Absorption of Head Impacts and Rolling Resistance

    Master-uppsats, KTH/Skolan för kemi, bioteknologi och hälsa (CBH)

    Författare :Brynjar Hilmarsson; [2018]
    Nyckelord :Shockabsorbing Flooring; Rolling Resistance; Fall Injuries; Head Impact Studies;

    Sammanfattning : In Sweden fall-related injuries among the elderly lead to over a thousand deaths and close to 300.0000 hospital visitations annually. Fall related injuries can in many cases lead to serious head injuries along with other fractures. The elderly are more prone to fall and sustain an injury because of conditions such as osteoporosis and weak muscles. LÄS MER

  7. 5. Testuppställning för uppmätning av rullmotstånd

    Kandidat-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Författare :Martin Erwe; [2018]
    Nyckelord :Tires rolling resistance; chassis dynamometer; torque wheel; rolling resistance coefficient; Däcks rullmotstånd; chassidynamometer; momentnav; rullmotståndskoefficient;

    Sammanfattning : När en lastbil färdas på väg utsätts den för ett antal krafter. Däckens rullmotstånd utgör ungefär 36 till 60 % av färdmotståndet. Att kunna validera rullmotståndet vid egen testning är värdefullt för en fordonstillverkare som Scania. LÄS MER