Essays about: "Start-Stopp"

Found 5 essays containing the word Start-Stopp.

  1. 1. Hydrogen Fuel Cell Lifetime Simulation in Marine Applications

    University essay from KTH/Kraft- och värmeteknologi

    Author : Yifeng Zhong; [2022]
    Keywords : maritime transportation; FEMFC; lifetime simulation; degradation mechanism; empirical relationship; semi-empirical approach; sjötransport; PEM-bränsleceller; livslängdssimulering; nedbrytningsmekanism; empiriskt samband; semi-empiriskt tillvägagångssätt;

    Abstract : Maritime transportation emits about 3% of global greenhouse gas, International Maritime Organization (IMO) aims to reduce shipping’s emissions by 50% with respect to 2008 levels. Proton exchange membrane fuel cells (PEMFCs) are considered among the most promising clean technologies for decarbonizing the maritime sector. READ MORE

  3. 2. Sliding bearings in heavy duty engines : A bearing wear comparative study

    University essay from KTH/Maskinkonstruktion (Inst.)

    Author : Mathias Anslin; Alexander Bölke; [2017]
    Keywords : Start-Stop; Wear; Surface topographies; Heating design; Start-Stopp; Nötning; Yttopografi; Värmekonstruktion;

    Abstract : Start-stop systems are widely used in the car industry today but have not yet been fully implemented in the heavy-duty vehicle industry. The greater loads arising in the engines leads to excessive wear of the hydrodynamic bearings during starts and stops which has a distinct impact on the machine´s lifetime performance and reliability. READ MORE

  4. 3. New materials in sliding bearings

    University essay from KTH/Maskinkonstruktion (Inst.)

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

    Abstract : 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. READ MORE

  5. 4. Engine start/stop vibrations in truck

    University essay from KTH/Maskinkonstruktion (Inst.)

    Author : Johan Darth; [2014]
    Keywords : ;

    Abstract : De vibrationer som uppkommer under start och stopp av motor i en lastbil är inte ett problem för den vanlige lastbilschauffören. Men när bränslesparande system och hybrida drivlinor blir allt vanligare på marknaden kommer vibrationskomforten under dessa vibrationer bli allt viktigare för förarmiljön. READ MORE

  6. 5. An engine start/stop strategy for a hybrid city bus

    University essay from KTH/Maskinkonstruktion (Inst.)

    Author : Robin Rockström; [2009]
    Keywords : ;

    Abstract : The heavy vehicle industry is constantly trying to improve fuel economy, reduce emissions and noise. The introduction of hybrid technology offers the possibility to take a big step forward in this area. One feature that the hybridization provides is to automatically turn off the combustion engine when it is not needed. READ MORE