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Visar resultat 1 - 5 av 7 uppsatser som matchar ovanstående sökkriterier.

  1. 1. The design of a hydraulic equalizer bar for the feeding mechanism on forest harvester heads

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

    Författare :Arvid Söderlund; [2023]
    Nyckelord :Harvester; Harvester head; Komatsu Forest; Hydraulics; Equalizer bar; Parallellstag; Stag; Skogsmaskin; Skördare; Aggregat; Skog;

    Sammanfattning : Due to the importance of a correct tree placement and the wear that occurs to equalizer bars inharvester heads, Komatsu Forest AB in Umeå was interested if the bar could be replaced with ahydraulic system. According to Komatsu, the problems were that the equalizer bars that are responsible forsynchronizing the delimbing knives and feeding mechanism add weight, take up space and have atendency to break before their life expectancy. LÄS MER

  3. 2. Energy Management of Parallel Hydraulic Hybrid Wheel Loader

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

    Författare :Hoang Thai Do; [2018]
    Nyckelord :;

    Sammanfattning : Hybridization of driveline system is one possible solution to increase fuel eciency.In this thesis a parallel hybrid hydraulic wheel loader concept was studied. A highpressure accumulator was added to the system and acted as a second source of energy. LÄS MER

  4. 3. Analysis of dropbox assisted hydraulic traction

    Master-uppsats, KTH/Maskinkonstruktion (Inst.)

    Författare :Zhen LI; [2017]
    Nyckelord :Accumulator; Brake Energy Recovery; Drive; Hydraulics; Truck; Ackumulator; Drivlina; Hydraulik; Lastbil; Regenerativ bromsning;

    Sammanfattning : The research looks at the advantages and disadvantages of a hydraulic auxiliary drive (HAD) system which is installed on a 25 meter long timber transport vehicle. The purpose is to investigate the performance with regard to energy, economy and environment of the system due to the added components, the hydraulic accumulators. LÄS MER

  5. 4. Energy Optimization of Hydraulic Systems : An investigation of energy-efficient designs for hydraulic systems

    Kandidat-uppsats, Institutionen för teknik och samhälle

    Författare :Tobias Emnerud; Katarina Svensson; [2011]
    Nyckelord :;

    Sammanfattning : An investigation of the global energy consumption debate confirms the complexity of the global environmental issues, the severity of the impact in developing countries and the major efforts that is required to discourse this development. Electricity production is the largest growing source of CO2- emissions, mainly due to the expansion of coal power plants in China and India. LÄS MER

  7. 5. Hybrid Electric & Hydraulic Drivers

    Master-uppsats, Fluida och mekatroniska system

    Författare :Mohammadreza Sadeghi; Ali Mohammed Fahimi Rezaii; [2010]
    Nyckelord :;

    Sammanfattning : The environmental impact of fossil fuel consumption has been a significant issue over the last decade. Mainly because of public awareness, increased fuel cost and stricter legislation. Today’s technological improvements have reduced fuel consumption and also emission of vehicles considerably. LÄS MER