Abstract: The present invention relates to a burner device (10) for a fuel cell system (100), having a burner housing (20) with a burner inlet (22) for admitting a fuel/air mixture (BL) and a burner outlet (24) for discharging a burner exhaust gas/air mixture (BAL), additionally having a catalyst body (30) within the burner housing (20) comprising a catalyst cavity (32) into which the burner inlet (22) opens, wherein the catalyst body (30) is gas-permeable and has a catalyst surface (34) with an at least partly catalytic coating (36), wherein a bypass volume (40) is formed between the catalyst surface (34) and the burner housing (20), said bypass volume opening into the burner outlet (24), wherein the catalyst body (30) additionally has a longitudinal axis (LA), and the catalyst surface (34) has a cross-sectional contour (QK) which deviates from a circular shape at least in some sections with respect to the longitudinal axis (LA).

Abstract: A combustor, including: a catalyst bed portion supporting a catalyst capable of promoting a combustion reaction of fuel; a vaporizer which is arranged on the downstream side of the catalyst bed portion with respect to a flow of the fuel going through the catalyst bed portion and is configured to be able to use a combustion gas generated from the combustion reaction as a hot fluid; a manifold portion which is outside the catalyst bed portion and guides air in a direction opposite to the flow of the fuel going through the catalyst bed portion and has a wall portion on which a sidewall of the vaporizer is projected; and a fuel introducing portion configured to penetrate the wall portion of the manifold portion so that the fuel evaporated by the vaporizer can be introduced into the manifold portion.

Abstract: The present invention concerns a starting burner (100a; 100b) for a fuel cell system (1000a; 1000b), having a catalyst (10) with a catalyst inlet (11) and a catalyst outlet (12), a catalyst area (13) being formed between the catalyst inlet (11) and the catalyst outlet (12), and the catalyst area (13) being surrounded by a catalyst wall (14) in a passage direction (D) from the catalyst inlet (11) to the catalyst outlet (12), and an operating fluid guide section (20) for supplying an operating fluid (F1) to the catalyst inlet (11), wherein the operating fluid guide section (20) is arranged outside the catalyst (10) at least in sections along the catalyst wall (14). The invention also concerns a fuel cell system (1000) with the starting burner (100a; 100b) and a method for heating a service fluid (F1) in the fuel cell system (1000a; 1000b).

Abstract: The invention relates to a fuel cell system (100) having a fuel supply unit (8) and fuel cells (1, 2) having a cathode (4, 4?) and an anode (3, 3?), wherein the cathode (4, 4?) features a cathode feed line (40), the anode (3, 3?) features an anode feed line (30), and the flow in the anode (3, 3?) is connected with the flow in the fuel supply unit (8) via the anode feed line (30), in which a reforming apparatus (13) is arranged, and having an anode exhaust line (6) provided with at least one burner apparatus (22, 23).

Abstract: This invention concerns a fuel cell system (100a; 100b; 100c) comprising a fuel cell stack (1) having an anode portion (2) and a cathode portion (3), a reformer (4) for supplying reformed anode gas to the anode portion (2), and an exhaust gas burner (5) for burning anode exhaust gas from the anode portion (2) and/or cathode exhaust gas from the cathode portion (3), wherein the reformer (4) is arranged at least in sections annularly around the exhaust gas burner (5), wherein an inner wall portion of the reformer (4) is arranged completely or at least substantially around an outer wall portion of the exhaust gas burner (5). The invention also concerns a method for operating a fuel cell system conforming to the invention (100a; 100b; 100c) and a motor vehicle (1000) with a fuel cell system conforming to the invention (100a; 100b; 100c).

Abstract: The invention relates to a fuel cell system (100) having a fuel supply unit (8) and fuel cells (1, 2) having a cathode (4, 4?) and an anode (3, 3?), wherein the cathode (4, 4?) features a cathode feed line (40), the anode (3, 3?) features an anode feed line (30), and the flow in the anode (3, 3?) is connected with the flow in the fuel supply unit (8) via the anode feed line (30), in which a reforming apparatus (13) is arranged, and having an anode exhaust line (6) provided with at least one burner apparatus (22, 23).