The transport sector needs efficient, environmentally compatible drive solutions. Hydrogen offers a high implementation potential and can be used both in internal combustion engines and in fuel cells. In urban deployment the fuel cell drive has specific advantages and is suitable for use in city buses. Hydrogen can make a major contribution to a global reduction in CO2 emissions. Hydrogen can be produced both in large plants and in decentralized small electrolyser outfits, which is an important advantage during the introduction phase for a new fuel. The fuel cell with its high specific efficiency in the partial load range has advantages over internal combustion systems. MAN developed a low-floor bus with fuel cell propulsion together with Siemens and Linde. The zero emission bus was launched in May 2000 and represents a further milestone along the road to a hydrogen-based economy. The bus is based on a modern low-floor vehicle, model NL 263. Built by Siemens Power Generation, the PEM fuel cell system contains four fuel cell stacks connected in series with a total of 640 individual cells and the peripheral supply systems. The FC system offers efficiency benefits for nearly the entire power range. On board the vehicle, the hydrogen is stored as compressed gas in a system developed by MAN Technology, consisting of nine tanks, each with a capacity of 172 l. A series of examinations and test drives were carried out with a view to making extensive measurements on the driveline components of the FC bus. A key focus was to investigate the power split within the driveline and in the process to record the share accounted for by the auxiliary units of the fuel cell system and the low floor bus. The efficiency gap between a FC or H2-ICE powered truck decreases compared to city bus applications. At the beginning of 2004, the new MAN hybrid fuel cell bus will start operation in the context of Phase 2 of the Bavarian Hydrogen Project at Munich Airport.


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    Title :

    Hydrogen supplied ICEs and fuel cells for commercial vehicles


    Additional title:

    Wasserstoff-betriebene Verbrennungsmotoren und Brennstoffzellen für Nutzfahrzeuge


    Contributors:
    Hipp, E. (author) / Kerschl, S. (author) / Pflanz, T. (author) / Gruber, C. (author)

    Published in:

    Fuel Cells ; 3 , 3 ; 133-140


    Publication date :

    2003


    Size :

    8 Seiten, 17 Bilder, 12 Quellen




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English





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