NOVELTY - Fuel supplying device for partially supplying a fuel load with hydrogen burning in a combustion chamber, preferably internal combustion engine (8) or fuel cell of a motor vehicle, comprises: at least a first storage tank (4) for a carrier enriched with hydrogen, preferably liquid organic hydrogen carrier (LOHC); a second storage tank (6) for a dehydrated carrier, where both tanks are connected via at least one flow circuit, preferably supplying line and a discharge line (5); and at least one pressure- and temperature-resistant reactor vessel (1) and a heat exchanger.    USE - The device is useful for partially supplying a fuel load with hydrogen burning in a combustion chamber, preferably internal combustion engine (8) or fuel cell of a motor vehicle.    ADVANTAGE - The device does not require additional operations or structures for distribution and introduction of LOHC, and thus it is cost-efficient.    DETAILED DESCRIPTION - Fuel supplying device for partially supplying a fuel load with hydrogen burning in a combustion chamber, preferably internal combustion engine (8) or fuel cell of a motor vehicle, comprises: at least a first storage tank (4) for a carrier enriched with hydrogen, preferably liquid organic hydrogen carrier (LOHC); a second storage tank (6) for a dehydrated carrier, where both tanks are connected via at least one flow circuit, preferably supplying line and a discharge line (5) for the carrier; and at least one pressure- and temperature-resistant reactor vessel (1) and a heat exchanger , preferably countercurrent heat exchanger, where the reactor vessel performs at least one separator function for providing hydrogen to the load by dehydrogenating the enriched carrier, and is connected with the combustion chamber of the load via at least one connecting line. The reactor vessel as a pressure- and temperature-resistant outer shell comprises a body mounted in movable, preferably rotating manner in it, and the body and/or the outer shell interiors are equipped with a catalyst, preferably platinum.    DESCRIPTION OF DRAWING(S) - The figure shows a schematic representation of the device.    Reactor vessel (1)    First storage tank (4)    Discharge line (5)    Second storage tank (6)    Internal combustion engine (8)