Fuel cell system

The invention relates to a fuel cell system with at least one fuel cell unit housed in a fuel cell box and/or to which a cathode gas or cold start gas supply line or a cathode exhaust gas or anode exhaust gas recirculation line is assigned. [0002] According to the invention, the system is equipped with at least one Coanda flow amplifier in order to amplify the air flow for ventilation of a fuel cell box, a cathode gas flow or a cold start gas flow, a recirculated cathode exhaust gas flow or a recirculated anode exhaust gas flow, and/or the system is equipped with a ventilation means for a housing outside the fuel cell box, in which components of the fuel cell system are combined, wherein the ventilation means comprise a Coanda flow amplifier. [0003] Use, for example, in fuel cell vehicles.