Abstract: A deduplicated microservices-based storage system and method running in a cloud includes frontend and backend microservice nodes that process requests from a plurality of clients and interface with a master node and one or more worker nodes connected as a network for deduplicating, storing and retrieving data from object storage. A custom metric compares demand on system resources to thresholds and dynamically scales resources to add or eliminate resources according to demand. The master node partitions the range of values identifying data similarity groups across the worker nodes, reassigns ranges of values using consistent hashing as worker nodes are scaled, and maintains a mapping of ranges of values to worker IP addresses.

Abstract: A fuel gas-operated vehicle heater includes a burner area with a combustion chamber (60) formed in a combustion chamber housing (58). The combustion chamber housing (58) includes a circumferential wall (62) defining the combustion chamber (60) in relation to a housing longitudinal axis radially outwards and a bottom area (64) axially defining the combustion chamber (60). The bottom area (64) has a fuel gas feed chamber (116) between a first bottom wall (106) defining the combustion chamber (60) and a second bottom wall (112). A fuel gas feed line (118) opens into the fuel gas feed chamber (116). A fuel gas inlet opening assembly is provided in the first bottom wall (106) for the entry of fuel gas from the fuel gas feed chamber (116) into the combustion chamber (60).

Abstract: In a method of processing data similarity groups, a combined read/write cache comprises an in-memory data structure having a fixed allocation of physical memory that includes a write portion comprising memory allocated to write entries and a read portion comprising memory allocated to read entries. Similarity group entries are written into the cache using keys based upon an identifier of a similarity group, and similarity group entries are read from the cache using keys based upon both similarity group and subgroup identifiers. The sizes of memory allocated to the write portion and to the read portion are dynamically varied within the fixed memory allocation based upon demand while maintaining the fixed memory allocation constant.

Abstract: A deduplicated microservices-based storage system and method running in a cloud includes frontend and backend microservice nodes that process requests from a plurality of clients and interface with a master node and one or more worker nodes connected as a network for deduplicating, storing and retrieving data from object storage. A custom metric compares demand on system resources to thresholds and dynamically scales resources to add or eliminate resources according to demand. The master node partitions the range of values identifying data similarity groups across the worker nodes, reassigns ranges of values using consistent hashing as worker nodes are scaled, and maintains a mapping of ranges of values to worker IP addresses.

Abstract: A fuel gas-operated vehicle heater includes a burner area with a combustion chamber (60) formed in a combustion chamber housing (58). The combustion chamber housing (58) includes a circumferential wall (62) defining the combustion chamber (60) in relation to a housing longitudinal axis radially outwards and a bottom area (64) axially defining the combustion chamber (60). The bottom area (64) has a fuel gas feed chamber (116) between a first bottom wall (106) defining the combustion chamber (60) and a second bottom wall (112). A fuel gas feed line (118) opens into the fuel gas feed chamber (116). A fuel gas inlet opening assembly is provided in the first bottom wall (106) for the entry of fuel gas from the fuel gas feed chamber (116) into the combustion chamber (60).

Abstract: The present invention relates to a residual gas burner (13) for a fuel cell system (1) having to educt gas feeds (11, 12) for feeding an educt gas each to a combustion chamber (14) of the residual gas burner (13). An improved operation of the residual gas burner (13) is obtained when the educt gas feeds (11, 12) each comprise outlet openings (22, 27), wherein the outlet openings (22, 27) face the combustion chamber (14) and the outlet openings (22, 27) of one of the educt gas feeds (11, 12) face a first bottom surface (29) of the other educt gas feed (11, 12). In addition, the invention relates to a fuel cell system (1) having such a residual gas burner (13).

Abstract: A process is provided for operating a fuel cell system (1), especially in a motor vehicle, wherein the fuel cell system (1) includes at least one reformer (2) and at least one fuel cell (3). To prolong the service life of the system (1), a warm-holding mode is carried out after switching off the fuel cell system (1). During the warm-holding mode an educt containing hydrogen and carbon monoxide is fed to the reformer (2) and reacted with air in reformer (2) at a catalyst (5) of reformer (2) in an exothermal reaction.

Abstract: A process for operating a fuel cell system (1), especially in a motor vehicle. The fuel cell system (1) includes at least one fuel cell (3) as well as at least one reformer (2). To improve the possibility of warm start, a warm-holding mode, in which heat transfer takes place from the fuel cell (3) to the reformer (2), is activated after switching off the fuel cell system (1).

Abstract: A process for operating a fuel cell system (1), especially in a motor vehicle. The fuel cell system (1) includes at least one fuel cell (3) as well as at least one reformer (2). To improve the possibility of warm start, a warm-holding mode, in which heat transfer takes place from the fuel cell (3) to the reformer (2), is activated after switching off the fuel cell system (1).

Abstract: A process is provided for operating a fuel cell system (1), especially in a motor vehicle, wherein the fuel cell system (1) includes at least one reformer (2) and at least one fuel cell (3). To prolong the service life of the system (1), a warm-holding mode is carried out after switching off the fuel cell system (1). During the warm-holding mode an educt containing hydrogen and carbon monoxide is fed to the reformer (2) and reacted with air in reformer (2) at a catalyst (5) of reformer (2) in an exothermal reaction.

Abstract: The present invention relates to a fuel cell for a fuel cell system, in particular in a motor vehicle, having a plurality of fuel cell elements that form a fuel cell stack, and furthermore having respectively precisely four through openings that align with one another in the fuel cell stack, forming an anode gas inlet canal, an anode gas outlet canal, a cathode gas inlet canal, and a cathode gas outlet canal. In each fuel cell element, the anode gas inlet and the anode gas outlet are diametrically opposite from one another. In each fuel cell element, the cathode gas inlet and the cathode outlet lie diametrically with respect to one another. The fuel cell stack has two end plates on which an anode gas inlet connection, an anode gas outlet connection, a cathode gas inlet connection, and a cathode gas outlet connection are configured, wherein the anode gas inlet connection is configured on the one end plate, while the cathode gas inlet connection is configured on the other end plate.

Abstract: A user interface system decreases the number of user interactions with a computer user interface, used to select items in multiple related menus, through a comprehensive heuristic menu arrangement control by providing several discrete, yet complementary, features. The system enables user selection of related parameters identifying an order for providing an item. A repository includes information identifying candidate items for order and associated corresponding related order parameters. An individual item for order is associated with multiple related order parameters. A user interface processor provides data representing a display image identifying an initial complete candidate order including multiple related parameters, in response to user entry of order-associated data.