NOVELTY - The method involves dividing a fuel cell stack (3) into two sub stacks (3a, 3b) relative to anode chambers (5a, 5b). The sub stacks are supplied with fuel from a fuel source (8) e.g. compressed gas storage, in parallel. Parallel subflows of the fuel are influenced by valve devices (17a, 17b). Supply of the parallel sub stacks with the fuel is carried out in phase wise during operating a fuel cell system (1) so that each subflow is pulsated relative to a volume flow and/or a pressure. Pulsations of the subflows are added so that a common fuel flow is not pulsated before division into subflows.    USE - Method for fuel supply of a fuel cell system for a motor vehicle. Uses include but are not limited to a rail-less motor vehicle i.e. passenger car, a commercial vehicle i.e. omni bus, a track-bound motor vehicle, a water vehicle, and a driver-less or driver-controlled transport system used in a logistic area.    ADVANTAGE - The supply of the parallel sub stacks with the fuel is carried out in phase wise during operating the fuel cell system so that each subflow is pulsated relative to the volume flow and/or the pressure, and pulsations of the subflows are added so that the common fuel flow is not pulsated before division into subflows, thus allowing simple and reliable dosage of the fuel flow corresponding to a power of the fuel cells, and enabling fuel supply of the fuel cell system for recirculation with a continuous drive gas flow with a simple and efficient structure. The method reduces expenditure relative to required return lines, enables simple control of the fuel supply, and avoids influence of the system due to pulsations. The method enhances discharge of undesired inert gases and moisture from the sub stacks of the fuel cell system.    DETAILED DESCRIPTION - The valve devices are 2/2 directional valves. An INDEPENDENT CLAIM is also included for a device for fuel supply of a fuel cell system.    DESCRIPTION OF DRAWING(S) - The drawing shows a pneumatic circuit diagram of a fuel cell system with a device for fuel supply of a fuel cell system for a motor vehicle.    Fuel cell system (1)    Fuel cell stack (3)    Sub stacks (3a, 3b)    Anode chambers (5a, 5b)    Fuel source (8)    Valve devices (17a, 17b)