Overall system options for passenger cars

In case other fuels are used, the fuel cell must be capable of accepting them (direct methanol fuel cell, etc.), or they must be converted to hydrogen, typically using a reformer (natural gas, gasoline, methanol, etc., cf. Chapter 2, Fig. 2.44). The store is now accommodating the fuel of choice. 

For direct combustion hydrogen vehicles, the components include the engine and usually a liquid hydrogen store (to get sufficient range). The control 

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