Technology Status of Hydrogen Road Vehicles
Technology Status of Hydrogen Road Vehicles
Technology Status of Hydrogen Road Vehicles
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Such a development also smooths the path for FCs, which are expensive and easier to assemble at present in<br />
reduced sizes. So an FC only one-fourth the size <strong>of</strong> that required in a non-hybrid bus may be attractive,<br />
depending on cost trade-<strong>of</strong>fs between the FC and the energy storage device.<br />
Wurster et al. (1996) describe two buses for near-term demonstration, <strong>of</strong> direct interest to this question: the<br />
Neoplan one mentioned above with a flywheel energy storage (Item 10 Table 2) and a similar MAN city bus<br />
(Item 11 Table 2) in which a 120-180 kW PEM FC provides all power; they will be demonstrated in parallel<br />
in the same city.<br />
Schock et al. (1996) find hybrid vehicles particularly suited to compete with conventional automobiles in<br />
California. A small, constant-speed ICE with suitable buffer storage (flywheel, ultracapacitors, and batteries<br />
are mentioned) gives similar performance to conventional automobiles, and allows “equivalent” ZEV standard<br />
(