Essays about: "start-stop"

Showing result 6 - 10 of 19 essays containing the word start-stop.

  1. 6. Preliminary simulation of Porjus U9 turbine at speed no load

    University essay from Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

    Author : Henrik Holmström; [2019]
    Keywords : Kaplan; Speed no-load; SNL;

    Abstract : Hydropower plants are shifting towards operating at off-designed conditions, meaning that the number of start-stop cycles and maintenance time due to cavitation increases. The speed no-load condition is the moment before magnetization of the generator, i.e., no load, low flow, constant runner rotational speed, guide vane and runner blade angle. READ MORE

  3. 7. Bronze-Steel Friction Characteristics under the Lubrication of Modified Water/Glycerol Mixtures

    University essay from Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

    Author : Karim Hamouda; [2017]
    Keywords : Glycerol; glycerol additives; stick-slip; shudder; friction modifiers;

    Abstract : Increasing environmental awareness has driven a lot of research to look into various environmentally friendly lubricants which can replace more conventional mineral oil based lubricants. This is true in particular for marine and hydropower applications where the risk of lubricant leakage can be damaging to the local environment. READ MORE

  4. 8. 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

  5. 9. Radar-Based Two-Dimensional Ego-Motion Estimation for Heavy Duty Vehicles

    University essay from KTH/Skolan för elektro- och systemteknik (EES)

    Author : Christian Kollberg; [2016]
    Keywords : ;

    Abstract : The development of Advanced Driver Assistance Systems (ADASs) has during recent years paved the way for important improvements within the industry of long haulage driving. Never have heavy duty vehicles been that safe and efficient as they are today and one may argue that high-level competition among manufacturers and strongly regulated legislations are the major underlying causes of contribution. READ MORE

  6. 10. 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