The present invention relates to a system that is capable of freely
selecting one or two or more types of fuel and supplying the selected
types of fuel to an internal combustion engine. Disclosed is a
hydrogen-fueled internal combustion engine that operates upon receipt of
one or more types of fuel that are selected from hydrogenated fuel and a
dehydrogenated product and hydrogen, which are obtained by
dehydrogenating the hydrogenated fuel. The hydrogen-fueled internal
combustion engine comprises: a hydrogenated fuel storage section;
reaction means for invoking a dehydrogenation reaction; separation means
for separating hydrogen-rich gas and dehydrogenated product; and a
dehydrogenated product storage section for storing the separated
dehydrogenated product.