Abstract: The disclosure relates to a fuel cell system comprising a fuel cell stack comprising anode chambers and cathode chambers, an anode supply comprising an anode supply path for supplying an anode operating gas to the anode chambers, and an anode exhaust path for discharging an anode exhaust gas from the anode chambers, and a cathode supply comprising a cathode supply path for supplying a cathode operating gas to the cathode chambers and a cathode exhaust path for discharging a cathode exhaust gas from the cathode chambers, and comprising a negative-pressure generation means for generating a negative pressure in the cathode chambers. It is provided that the negative-pressure generation means is designed as an ejector which is connected to a compressor arranged in the cathode supply path on the pressure input side, and to the cathode chambers of the fuel cell stack on the suction side, in a fluid-conducting manner.

Abstract: A humidifier with an integrated water separator for a fuel cell system, including a housing with a first channel for a first gas stream and a second channel for a second gas stream, a humidifier area in which the first channel and the second channel are separated from one another by a water vapor-permeable membrane, and a collection container for collecting the deposited liquid water is provided. It is provided that a water separator for separating liquid water is situated in the humidifier area.

Abstract: A rolled steel sheet, for press hardening is provided, having a chemical composition where Ti/N>3.42, and the carbon, manganese, chromium and silicon contents satisfy: 2.6 ? C + Mn 5.3 + Cr 13 + Si 15 ? 1.1 ? % . The sheet has a nickel content Nisurf at any point of the steel in the vicinity of the surface over a depth ?, such that: Nisurf >Ninom, Ninom denoting the nominal nickel content of the steel, and such that, Nimax denoting the maximum nickel content within ?: ( Ni max + Ni nom ) 2 × ( ? ) ? 0.6 , and such that: ( Ni max - Ni nom ) ? ? 0.01 and the surface density of all of the particles Di and the surface density of the particles D(>2 ?m) larger than 2 micrometers satisfy, at least to a depth of 100 micrometers in the vicinity of the surface of said sheet: Di+6.

Abstract: The invention relates to a fuel cell stack having bipolar plates (10), each of which has two separator plates (12, 14) with an active region (16) and two distribution regions (18, 20) with main gas ports (22, 24) as well as a coolant main port (26), wherein the separator plates (12, 14) are formed and arranged one over the other in such a way that the respective bipolar plate (10) has separate channels (28, 30, 32) for the reaction gases and the coolant that connect the main gas port (22, 24) for the reaction gases and the coolant main port (26) of the two distribution region (18, 20) to each other. It is provided that the channels (28) for a reaction gas have an impermeable first dividing plate (38) in an inlet area (40) of the active area (16) that separates the channels (28) into two volume areas (58, 60), and in that a second main gas port (23) is provided adjacent to the first main gas port (22) in a distribution region (18) in order to supply the reaction gas.

Abstract: An ejector with a suction nozzle is disclosed, with a drive nozzle and with a mixing tube, to which is assigned an adjustment device for the at least region-wise adjustment of a flow cross-section of the mixing tube. Inside the drive nozzle, an axially movable needle which is designed to adjust a flow cross-section of the drive nozzle is arranged and a coupling mechanism is provided which connects the adjustment device to the needle or to an actuator actuating the needle in such a way that the adjustment device adjusts or changes the flow cross-section of the mixing tube as a function of an axial needle movement. A fuel cell system with such an ejector is also disclosed.

Abstract: The invention relates to a fuel cell arrangement (1) and a motor vehicle having a fuel cell arrangement (1). In order to be able to produce the fuel cell arrangement (1) in a compact manner and to be able to operate said fuel cell arrangement in an efficient manner, it is provided in accordance with the invention that an exhaust gas flow path (3a) of the fuel cell arrangement (1) extends through a jet pump (4).

Abstract: A fuel cell system (1) in which a water separator (110) for separating liquid water from an exhaust gas (6, 4) of a fuel cell (10) of the fuel cell system (1) is fluid-mechanically coupled into an exhaust gas path (32, 22) of the fuel cell system. A water recirculator (120) is fluid-mechanically coupled into the fuel cell system (1), with the aid of which at least a portion of the water of the water separator (110) is once again providable to the fuel cell (10). Moreover, a method for recirculating water in a fuel cell system (1), in which liquid water of a fuel cell supply (30, 20) of the fuel cell system (1) is withdrawn at a removal site at/in the fuel cell supply (30, 20). The water upstream from the removal site is provided to the same fuel cell supply (30, 20) and/or to some other fuel cell supply (20, 30) of the fuel cell system (1).

Abstract: An exhaust gas turbocharger (10) including a turbine section (14), a compressor section (12), a bearing housing (16) disposed between an fluidly connected to the turbine section (14) and the compressor section (12), and an oil flow means connected to the bearing housing (16) for controlling and metering oil flow to the bearing assembly (42).

Abstract: A cathode supply (30) for a fuel cell (10) of a fuel cell unit (1) for a fuel cell system is provided, the cathode supply (30) including a cathode supply path (31) and a cathode exhaust gas path (32) and at least two fluid pumping devices (33, 133) for pumping a cathode operating medium (5) for the fuel cell (10) are fluido-mechanically coupled into the cathode supply path (31), at least one first fluid pumping device (133) of the at least two fluid pumping devices (33, 133) being drivable only on the basis of an enthalpy in a cathode exhaust gas (6) of the fuel cell (10). A fuel cell unit for a vehicle, in particular, an electric vehicle, a fuel cell system for a vehicle, in particular, an electric vehicle, or a vehicle in particular an electric vehicle, the fuel cell unit, the fuel cell system, or the vehicle including a cathode supply (30) is provided.

Abstract: Described herein are methods that define cellular populations that are sensitive to RARA agonists and identify patient populations that will benefit from treatment with RARA agonists. The methods may comprise administering RARA agonists to patient populations.

Abstract: An anode-cathode supply device for a fuel cell of a fuel cell system, including an anode supply system and a cathode supply system, which may be brought into a fluid communication with each other with the aid of an overflow line situated therebetween and through an overflow valve, the overflow valve being designed as an NC overflow valve, the NC overflow valve being closed in a de-energized state of the NC overflow valve and at a balanced pressure ratio at the NC overflow valve is provided. A method for supplying an operating medium or a device for supplying an operating medium, in particular hydrogen, from an anode to a cathode of a fuel cell of a fuel cell system, preferably a vehicle, in particular an electric vehicle, chronologically during and/or after the fuel cell is deactivated is also provided. A fuel cell system for a vehicle, in particular an electric vehicle, or to a vehicle, in particular an electric vehicle is also provided.

Abstract: A fuel cell system including: a fuel cell stack; a cathode gas supply system including a cathode supply path for feeding cathode operating gas into the fuel cell stack and a cathode exhaust gas path for discharging cathode exhaust gas out of the fuel cell stack, and a fuel cell cooling system for cooling the fuel cell stack including a coolant path into which the fuel cell stack is integrated so as to transfer heat is provided. It is provided that the cathode gas supply system also includes a turbine arranged in the cathode exhaust gas path, and the coolant path of the fuel cell cooling system in the flow path of the cathode exhaust gas downstream from the turbine is in heat-transferring contact with the cathode exhaust gas path. This achieves a cooling of the coolant by the cathode exhaust gas and a heating of the cathode exhaust gas by the coolant.

Abstract: It is proposed to arrange a plurality of individual separator elements (48, 49) on the first side (40) of the membrane (38) in order to provide a humidifier (37) with integrated water separator, in particular for fuel cells (11) having a water vapor permeable membrane (38) and separator elements (48, 49) for separating water, wherein the membrane (38) on a first side (40) is in contact with a first channel (41) for a first humid gas stream, and on the second side (42) is in contact with a second channel (43) for a second, dry gas stream to be humidified, which allows an optimized exchange of moisture between the exhaust gas and operating medium streams of a fuel cell. Also provided is a fuel cell system and vehicle having the aforementioned humidifier.

Abstract: The invention relates to a fuel cell stack having bipolar plates (10), each of which has two separator plates (12, 14) with an active region (16) and two distribution regions (18, 20) with main gas ports (22, 24) as well as a coolant main port (26), wherein the separator plates (12, 14) are formed and arranged one over the other in such a way that the respective bipolar plate (10) has separate channels (28, 30, 32) for the reaction gases and the coolant that connect the main gas port (22, 24) for the reaction gases and the coolant main port (26) of the two distribution region (18, 20) to each other. It is provided that the channels (28) for a reaction gas have an impermeable first dividing plate (38) in an inlet area (40) of the active area (16) that separates the channels (28) into two volume areas (58, 60), and in that a second main gas port (23) is provided adjacent to the first main gas port (22) in a distribution region (18) in order to supply the reaction gas.

Abstract: The invention relates to a fuel cell system (100) comprising a fuel cell stack (10) comprising anode chambers (11) and cathode chambers (12), an anode supply (20) comprising an anode supply path (21) for supplying an anode operating gas to the anode chambers (11), and an anode exhaust path (22) for discharging an anode exhaust gas from the anode chambers (11), and a cathode supply (30) comprising a cathode supply path (31) for supplying a cathode operating gas to the cathode chambers (12) and a cathode exhaust path (32) for discharging a cathode exhaust gas from the cathode chambers (12), and comprising a negative-pressure generation means (40) for generating a negative pressure in the cathode chambers (12).

Abstract: A humidifier with an integrated water separator for a fuel cell system, including a housing with a first channel for a first gas stream and a second channel for a second gas stream, a humidifier area in which the first channel and the second channel are separated from one another by a water vapor-permeable membrane, and a collection container for collecting the deposited liquid water is provided. It is provided that a water separator for separating liquid water is situated in the humidifier area.

Abstract: A fuel cell system (1) in which a water separator (110) for separating liquid water from an exhaust gas (6, 4) of a fuel cell (10) of the fuel cell system (1) is fluid-mechanically coupled into an exhaust gas path (32, 22) of the fuel cell system. A water recirculator (120) is fluid-mechanically coupled into the fuel cell system (1), with the aid of which at least a portion of the water of the water separator (110) is once again providable to the fuel cell (10). Moreover, a method for recirculating water in a fuel cell system (1), in which liquid water of a fuel cell supply (30, 20) of the fuel cell system (1) is withdrawn at a removal site at/in the fuel cell supply (30, 20). The water upstream from the removal site is provided to the same fuel cell supply (30, 20) and/or to some other fuel cell supply (20, 30) of the fuel cell system (1).

Abstract: A cathode supply (30) for a fuel cell (10) of a fuel cell unit (1) for a fuel cell system is provided, the cathode supply (30) including a cathode supply path (31) and a cathode exhaust gas path (32) and at least two fluid pumping devices (33, 133) for pumping a cathode operating medium (5) for the fuel cell (10) are fluido-mechanically coupled into the cathode supply path (31), at least one first fluid pumping device (133) of the at least two fluid pumping devices (33, 133) being drivable only on the basis of an enthalpy in a cathode exhaust gas (6) of the fuel cell (10). A fuel cell unit for a vehicle, in particular, an electric vehicle, a fuel cell system for a vehicle, in particular, an electric vehicle, or a vehicle in particular an electric vehicle, the fuel cell unit, the fuel cell system, or the vehicle including a cathode supply (30) is provided.

Abstract: An anode-cathode supply device for a fuel cell of a fuel cell system, including an anode supply system and a cathode supply system, which may be brought into a fluid communication with each other with the aid of an overflow line situated therebetween and through an overflow valve, the overflow valve being designed as an NC overflow valve, the NC overflow valve being closed in a de-energized state of the NC overflow valve and at a balanced pressure ratio at the NC overflow valve is provided. A method for supplying an operating medium or a device for supplying an operating medium, in particular hydrogen, from an anode to a cathode of a fuel cell of a fuel cell system, preferably a vehicle, in particular an electric vehicle, chronologically during and/or after the fuel cell is deactivated is also provided. A fuel cell system for a vehicle, in particular an electric vehicle, or to a vehicle, in particular an electric vehicle is also provided.

Abstract: A fuel cell system including: a fuel cell stack; a cathode gas supply source including a cathode supply path for feeding cathode operating gas into the fuel cell stack and a cathode exhaust gas path for discharging cathode exhaust gas out of the fuel cell stack, and a fuel cell cooling system for cooling the fuel cell stack including a coolant path into which the fuel cell stack is integrated so as to transfer heat is provided. It is provided that the cathode gas supply source also includes a turbine arranged in the cathode exhaust gas path, and the coolant path of the fuel cell cooling system in the flow path of the cathode exhaust gas downstream from the turbine is in heat-transferring contact with the cathode exhaust gas path. This achieves a cooling of the coolant by the cathode exhaust gas and a heating of the cathode exhaust gas by the coolant.