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Visar resultat 21 - 24 av 24 uppsatser som matchar ovanstående sökkriterier.

  1. 21. Beräkning av värmeförluster och energieffektivisering av elbussar

    M1-uppsats, Institutionen för tillämpad fysik och elektronik

    Författare :Petter Fredriksson; [2012]
    Nyckelord :värmeförluster; energieffektivisering; buss;

    Sammanfattning : The ”civilized” world is in need of fossil fuel in order to function. Hybricon AB is a company in Umeå that is developing a technology that hopefully can reduce parts of this need. They are currently testing their two electrical busses (with Hybrid backup) in city traffic on the roads of Umeå in cooperation with the county of Umeå. LÄS MER

  3. 22. Design of a CFRP-to-steel joint for a bus engine mount and experimental testing of joint relaxation

    Master-uppsats, KTH/Lättkonstruktioner

    Författare :Mikael Ljunkrantz; [2012]
    Nyckelord :;

    Sammanfattning : The objective of this study is to investigate aspects of hybrid joint design for a shear connection. Part 1 is design considerations and a case study based on a engine mount. In Part 2, an experimental study is conducted regarding how relaxation and creep affects properties of a hybrid joint between carbon fiber vinylester and steel. LÄS MER

  4. 23. An engine start/stop strategy for a hybrid city bus

    Master-uppsats, KTH/Maskinkonstruktion (Inst.)

    Författare :Robin Rockström; [2009]
    Nyckelord :;

    Sammanfattning : 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. LÄS MER

  5. 24. LOCAL DECISIONS REGARDING PUBLIC TRANSPORT ALTERNATIVES

    D-uppsats, Göteborgs universitet/Graduate Business School

    Författare :Claes G. Westlin; Martin C. Johansson; [2003]
    Nyckelord :public transport; light rail; bus; decision-making processes; political will; cost-benefit analysis; state subsidies.;

    Sammanfattning : This thesis looks at the decision-making processes associated with choosing public transport alternatives in major cities. The choice is made either when routes are to be replaced or when new routes are to be implemented. The thesis is a case study where two bus cases and two light-rail cases were selected. LÄS MER