Robert Boschgmbh

Sergei Hahn

Jochen Braun

Mark Hellmann

The invention relates to a method for ascertaining a vehicle () fuel cell system () operating strategy which is optimized with respect to efficiency and service life. The method has the steps of:

Method for ascertaining a vehicle fuel cell system operating strategy which is optimized with respect to efficiency and service life

The invention relates to a method for setting an operating strategy for a fuel cell system () of a power generation device (), in particular in the form of a vehicle, depending on an operating mode of the power generation device (), having the steps of: a determination unit () determining at least one current operating parameter (P) of the power generation device (), the determination unit () determining at least one cumulative and/or predictive operating parameter (P, P, P) of the power generation device (), and a setting device () setting the operating strategy for the fuel cell system () on the basis of the at least one current operating parameter (P) and the at least one cumulative and/or predictive operating parameter (P, P, P) of the power generation device (). The invention furthermore relates to a corresponding circuit arrangement (), to a computer program () and to a storage means with a computer program () stored thereon.

Method and circuit arrangement for setting an operating strategy for a fuel cell system

The invention relates to a method for operating a fuel cell system (), having a fuel cell stack () with a plurality of fuel cells () each having at least one cathode portion (K) and at least one anode portion (A), a compressor () for conveying air into the cathode portions (K), a pressure-sustaining valve (), and a control device (), the at least one cathode portion (K) being arranged downstream of and in fluid communication with the compressor () and upstream of and in fluid communication with the pressure-sustaining valve (), the fuel cell system () having a high-pressure region (HDB) between the compressor () and the pressure-sustaining valve (). The invention further relates to a control device () and to a fuel cell system ().

Method for operating a fuel cell system, control device, and fuel cell system

A method () for operating a gas bearing (), wherein the gas bearing is formed by a rotor () and a stator (), wherein when there is rotation against a stator () with a lift-off rotational speed nthe rotor () changes from mixed friction with the stator () into fluid friction with a medium () located between the stator () and the rotor (), wherein the rotational speed of the rotor () is kept at or above an idling rotational speed n, wherein&#x2014;in response to a first information item (), on the basis of which a change &#x394;F is to be expected in the acceleration forces F acting on the gas bearing (), a new value of a safety factor r:=n/nbetween the idling rotational speed nand the lift-off rotational speed nis determined (), and/or&#x2014;in response to a second information item (), on the basis of which a change &#x394;nis to be expected in the lift-off rotational speed n, a new value nis determined for the lift-off rotational speed n(), wherein the idling rotational speed nof the gas bearing () is adapted to the changed value of the safety factor r, and/or to the changed value nof the lift-off rotational speed n, (). The invention further relates to an associated computer program.

Growing community of inventors

Stuttgart, Germany

Sergei Hahn