Abstract: An efficient internal combustion engine jointly using hydrogen obtained by dehydrogenation of a hydrogen supply mass. There is disclosed a hydrogen supply unit for internal combustion engine comprising hydrogen separating means, storage means for storage of separated hydrogen, means for storage of dehydrogenation products and means for addition supply of produced hydrogen to a fuel source.

Abstract: The efficiency of dehydrogenation and that of hydrogenation are improved. A hydrogen generator for generating hydrogen by dehydrogenation of organic hydrides in the presence of a catalyst is characterized by comprising a reactor vessel (10) of a multi-tubular structure having a region (12) for supplying fuel to generate heat necessary for dehydrogenation, the region containing a combustion catalyst for combusting fuel, and a region (11) containing a dehydrogenation catalyst necessary for dehydrogenation, the regions being arranged radially side by side with a wall separating them.