Abstract: A catalyst unit (1; 1?) configured for the reduction of NOx compounds in a gas stream and which includes a catalytically active material of the silver/alumina type. The catalyst unit (1; 1?) has at least one first reaction zone (3a, 3b, 3c, 3d, 3e) containing the catalytically active material and at least one second reaction zone (4a, 4b, 4c, 4d, 4e; 8a, 8b, 8c, 8d, 8e) which is arranged to permit breakdown of a gas species which is formed in the first reaction zone (3a, 3b, 3c, 3d, 3e), with N2 being formed, and in that the gas stream is conducted through the first reaction zone (3a, 3b, 3c, 3d, 3e) and the second reaction zone (4a, 4b, 4c, 4d, 4e; 8a, 8b, 8c, 8d, 8e). The invention results in an improved catalyst unit which in particular provides high-grade reduction of NOx compounds in an exhaust gas stream from a combustion engine.

Abstract: Device for catalytic treatment of a gas flow including at least one body (1) that includes a catalytic material. The device has a number of first openings (5) for either entry of gas into or exit of gas from the catalyzer body (1), and a second opening (6) for either exit of the gas entering through the first openings or entry of gas into the catalyzer body (1) for subsequent exit through the first openings.

Abstract: In a system and method for reduction of nitrogen oxides from exhaust gases generated by a lean-burn internal combustion engine, a lean NOx catalyst is arranged to be connected to an exhaust conduit of the lean-burn internal combustion engine, an injector is arranged for injecting a reduction agent to be used by the lean NOx catalyst in a reduction process, and a fuel tank contains the reduction agent.

Abstract: Device for treatment of a gas flow having at least one body (3) that is adapted to cause a conversion in the composition of the gas. The device is characterized in that the body (3) has a modular construction comprising a plurality of sections (26, 26?, 27, 27?, 36) with different internal structures that allow gas to flow through the section, and that the sections (26, 26?, 27, 27?, 36) are arranged so that at least a portion of the gas flows through at least two sections with different internal structures during operation of the device.

Abstract: Device (1) for the recovery of thermal energy from a first gas flow (11) from an internal combustion engine (10), the device being designed for the transfer of thermal energy from the first gas flow (11) to a second gas flow (12). The device includes a body (2) having a zigzag-shaped structure, which forms ducts for said gas flows, and the body (2) is designed for the transfer of heat between the first gas flow (11) and the second gas flow (12).

Abstract: Porous materials are disclosed for use in the catalytic conversion of exhaust gases comprising a carrier including a first porous structure, an oxidation catalyst capable of catalyzing the oxidation of NO to NO2 in the presence of oxygen and catalyzing the oxidation of reducing agent, the oxidation catalyst enclosed within the first porous structure, the first porous structure including pores having dimensions such that the reducing agent is substantially prevented from contacting the oxidation catalyst, whereby the oxidation catalyst primarily catalyses the oxidation of NO to NO2 as compared to oxidation of the reducing agent during the catalytic conversion of the exhaust gases. Methods for catalytic conversion or exhaust gases using these materials are also disclosed.

Abstract: An electric machine including a first member and a second member. The second member is movable in relation to the first member. The first member has at least one coil and the first and the second members both include a plurality of segments, where each segment of the first member comprises a plurality of sections have a first magnetic conducting material. Each segment of the second member includes a plurality of sections having a second magnetic conducting material, and in which the first and the second member includes a closed magnetic circuit.

Abstract: Device for treatment of a gas flow having at least one body (3) that is adapted to cause a conversion in the composition of the gas. The device is characterized in that the body (3) has a modular construction comprising a plurality of sections (26, 26?, 27, 27?, 36) with different internal structures that allow gas to flow through the section, and that the sections (26, 26?, 27, 27?, 36) are arranged so that at least a portion of the gas flows through at least two sections with different internal structures during operation of the device.

Abstract: Porous material (1) for catalytic conversion of exhaust gases including a carrier with a first porous structure (2, 2?), and an oxidation catalyst (OX) which in the presence of oxygen (O2), according to a first reaction (3), has the ability to catalyze oxidation of nitrogen monoxide (NO) into nitrogen dioxide (NO2) and, according to a second reaction (4, 4?), to catalyze oxidation of a reducing agent (HC), which oxidation catalyst (OX) is enclosed inside the first porous structure (2, 2?). The invention is characterized in that the oxidation catalyst (OX) includes iron (Fe) and silver (Ag) loaded on a zeolite. The invention also relates to a method and an arrangement and a catalytic conversion device that utilizes the porous material, and indicates an advantageous use of the porous material.

Abstract: Method and apparatus for treating a gas flow including guiding the gas flow through a gas treatment unit (18) adapted for filtering particles in the gas flow, and eliminating the particles in the gas treatment unit (18). Particles are filtered from the gas flow by means of accumulating the particles in, or in connection with, a number of ducts (21) forming part of the gas treatment unit (21) during passage of the gas flow through the gas treatment unit (18). The temperature of the gas flow is controlled along the ducts (21) to a value that provides combustion of the particles, and eliminates the filtered particles in the gas treatment unit (18) by means of combustion in the ducts (21). An improved treatment of a gas flow is provided, in particular in connection with exhaust gas purification in a diesel engine, for eliminating particles in its exhaust gases.

Abstract: Device for treatment of a gas flow including at least one body (3), at least one first opening (4, 4?) for entrance of an incoming gas flow to the body (3) and at least one second opening (5, 5?) for the exit of an outgoing gas flow from the body (3). The body (3) is provided with a plurality of gas flow passages (11a, 11b) arranged to permit heat exchange between the gas flows in adjacent passages. The device has at least one distribution section (26, 26?) in communication with the first opening (4, 4?) and with the gas flow passages (11a, 11b) to distribute the incoming gas flow to the gas flow passages (11a, 11b), and at least one gas flow passage section (27, 27?) including the gas flow passages (11a, 11b), which passage section (27, 27?) primarily is adapted to permit heat exchange and to cause a conversion in the composition of the gas.

Abstract: Method and arrangement for treatment of a gas-flow in connection with a NOx reducing catalyst (18) that include guiding the gas-flow through an exhaust gas treatment unit (18) having several ducts (21) with exchange of heat between the ducts (21). The ducts (21) are connected to an inlet and an outlet, respectively, at the exhaust gas treatment unit (18) so that the gas-flow occurs during exchange of heat between incoming and outgoing flows. Reduction of NOx compounds in the gas-flow is accomplished by means of the NOx reducing catalyst (18). An adaptation of the temperature of the exhaust gas treatment unit (18) is affected to the prevailing operating condition of the NOx reducing catalyst (18). The method and apparatus enable provision of the required exhaust gas temperature for NOx reduction, while also accommodating the temperature limitations imposed by sulphur absorption and regeneration subsystems.

Abstract: Abstract of the Disclosure Method and apparatus for treating a gas flow including guiding the gas flow through a gas treatment unit (18) adapted for filtering particles in the gas flow, and eliminating the particles in the gas treatment unit (18). Particles are filtered from the gas flow by means of accumulating the particles in, or in connection with, a number of ducts (21) forming part of the gas treatment unit (21) during passage of the gas flow through the gas treatment unit (18). The temperature of the gas flow is controlled along the ducts (21) to a value that provides combustion of the particles, and eliminates the filtered particles in the gas treatment unit (18) by means of combustion in the ducts (21). An improved treatment of a gas flow is provided, in particular in connection with exhaust gas purification in a diesel engine, for eliminating particles in its exhaust gases.

Abstract: An electric machine including a first member and a second member. The second member is movable in relation to the first member. The first member has at least one coil and the first and the second members both include a plurality of segments, where each segment of the first member comprises a plurality of sections have a first magnetic conducting material. Each segment of the second member includes a plurality of sections having a second magnetic conducting material, and in which the first and the second member includes a closed magnetic circuit.

Abstract: Method and apparatus for treating a gas flow including guiding the gas flow through a gas treatment unit (18) adapted for filtering particles in the gas flow, and eliminating the particles in the gas treatment unit (18). Particles are filtered from the gas flow by means of accumulating the particles in, or in connection with, a number of ducts (21) forming part of the gas treatment unit (21) during passage of the gas flow through the gas treatment unit (18). The temperature of the gas flow is controlled along the ducts (21) to a value that provides combustion of the particles, and eliminates the filtered particles in the gas treatment unit (18) by means of combustion in the ducts (21). An improved treatment of a gas flow is provided, in particular in connection with exhaust gas purification in a diesel engine, for eliminating particles in its exhaust gases.

Abstract: Device (1) for the recovery of thermal energy from a first gas flow (11) from an internal combustion engine (10), the device being designed for the transfer of thermal energy from the first gas flow (11) to a second gas flow (12). The device includes a body (2) having a zigzag-shaped structure, which forms ducts for said gas flows, and the body (2) is designed for the transfer of heat between the first gas flow (11) and the second gas flow (12).

Abstract: Method and apparatus for establishing a fuel cell unit (10) in the form of an extruded monolith having channels (14), of which every second constitutes a fuel channel (14a) and every other second an oxygen channel (14b). The channels (14) are designed in such a manner that the fuel channels (14a) are displaced laterally in relation to the oxygen channels (14b), in such a way that all the fuel channels (14a) protrude a certain distance from the end points of all the oxygen channels 14b) and all the oxygen channels (14b) protrude a certain distance from the end points of all the fuel channels (14a). The distance is less than the length of respective channels. The invention also relates to a fuel cell device that includes several of the fuel cell units (10) that together establish an enhanced system of fuel cell units that lend themselves to compact.

Abstract: Device for catalytic treatment of a gas flow including at least one body (1) that includes a catalytic material. The device has a number of first openings (5) for either entry of gas into or exit of gas from the catalyzer body (1), and a second opening (6) for either exit of the gas entering through the first openings or entry of gas into the catalyzer body (1) for subsequent exit through the first openings.

Abstract: Method and device for reduction of a gas component in an exhaust gas flow of a combustion engine (1) that is adapted for operation by a lean air/fuel mixture. An exhaust pipe (21) is included for transport of the exhaust gas flow from the engine (1). A separation unit (22) is also included that is arranged along the exhaust pipe (21), which separation unit (22) ahs a wall structure (32) of a material which provides separation of the gas component from the exhaust gas flow by means of a selective passage of the gas component before other gas components in the exhaust gas flow. The method provides for a reduction and a separation unit that is intended to be utilized during such a reduction. An improved reduction of in particular NOx compounds from a so-called “lean-burn” engine is also provided.

Abstract: Method and arrangement for treatment of a gas-flow in connection with a NOx reducing catalyst (18) that include guiding the gas-flow through an exhaust gas treatment unit (18) having several ducts (21) with exchange of heat between the ducts (21). The ducts (21) are connected to an inlet and an outlet, respectively, at the exhaust gas treatment unit (18) so that the gas-flow occurs during exchange of heat between incoming and outgoing flows. Reduction of NOx compounds in the gas-flow is accomplished by means of the NOx reducing catalyst (18). An adaptation of the temperature of the exhaust gas treatment unit (18) is affected to the prevailing operating condition of the NOx reducing catalyst (18). The method and apparatus enable provision of the required exhaust gas temperature for NOx reduction, while also accommodating the temperature limitations imposed by sulphur absorption and regeneration subsystems.