Abstract: An adjustment element with which a component is fastenable and positionable in the space and including a sleeve-like hollow screw with a first and a second axial end and an outer thread to which a component can be retained and can be positioned in axial direction of the hollow screw, adjacent to the first axial end, the hollow screw has a fastening collar which is configured integrally and projects radially to the inside and which encompasses a tubular fastening opening of the hollow screw, and an axial support sleeve arranged within the tubular fastening opening so that the hollow screw is rotatably fastenable with a fastening means to a component in a rotatable manner, which passes through the axial support sleeve.

Abstract: The invention relates to a friction stir welding tool (1) with an essentially cylindrical shank (2), which has a peg (3) with a smaller diameter projecting on one end (5) starting from a shoulder region (4) of the shank (2). According to the invention it is provided in order to create a friction stir welding tool (1) for welding steel, that the friction stir welding tool (1), at least in the region of the peg (3) and in the shoulder region (4), is made of a hard metal containing 80% by weight to 98% by weight tungsten carbide with an average grain size of more than 1 ?m and up to 20% by weight cobalt as well as optionally a total of up to 18% by weight titanium carbide, tantalum carbide, niobium carbide and/or mixed carbides thereof and at least in one of the referenced regions has a coating of one or more layers.

Abstract: The invention relates to a device for removing soot particles from an exhaust gas stream of a motor vehicle operated with diesel, comprising a catalyst element for the at least partial oxidation of nitrogen monoxide (NO) to nitrogen dioxide (NO2) and a particulate filter arranged downstream of the catalyst element and means to guide the exhaust gas stream through the catalyst element and the particulate filter. So that a device of this type can be operated essentially free of clogs even with high sulfate and ash contents and quickly reaches an operating temperature with a cold start, it is provided according to the invention that the catalyst element is a coated open-porous metal foam body (1) and the particulate filter is an open-porous ceramic foam body (2).

Abstract: An apparatus for removing carbon particles from exhaust gas of an internal combustion engine by oxidation of carbon particles with nitrogen dioxide is provided and comprises a module through which exhaust gas flows. The module is an open, self-regenerating module in which are disposed open-pored, metallic expanded material components, including at least two first noble-metal-coated components that increase nitrogen dioxide concentration in the exhaust gas for the oxidation of carbon particles. The first components are disposed by themselves in the module, or in an alternating arrangement with uncoated and/or coated second metallic expanded material components. The first components are configured such that nitric oxide that results thereon during the oxidation of the carbon particles again reacts to form nitrogen dioxide and is thus reused multiple times.