摘要:
The invention relates to a conical honeycomb body (1), especially a catalyst support body for exhaust-gas systems of internal combustion engines, and a method for producing same which avoids the deformations occurring especially when fixing a conical lamellar body (2) in a conical jacket tube (3). To this end, clamping aids (7; 8; 9, 10; 11; 12; 13, 14) are arranged in the jacket tube (3) at a distance from its front openings (4, 5) and are configured such that at least in sections they have a ring shape. The preferred clamping aids (7; 8; 9, 10; 11; 12; 13, 14) provided for by the invention are advantageously characterized in that they allow for the economical production of conical honeycomb bodies (1) having greater mechanical strength. Their variants also make it possible to influence the function of the edge area of the conical honeycomb body (1) in a targeted manner. Especially beading (9, 11), necking (8, 12) and/or rings (7, 10) achieve, for example, a barrier effect so that no fluids are able to circulate in the channels situated in the edge area of the jacket tube (3) in which fluids would be otherwise be able to circulate. The front openings (4, 5) of the jacket tube (3) are free of inserted elements and can therefore be easily be welded to other components of the exhaust-gas system.
摘要:
The invention relates to a conical honeycomb body (1), especially a catalyst support body for exhaust-gas systems of internal combustion engines, and a method for producing same which avoids the deformations occurring especially when fixing a conical lamellar body (2) in a conical jacket tube (3). To this end, clamping aids (7; 8; 9, 10; 11; 12; 13, 14) are arranged in the jacket tube (3) at a distance from its front openings (4, 5) and are configured such that at least in sections they have a ring shape. The preferred clamping aids (7; 8; 9, 10; 11; 12; 13, 14) provided for by the invention are advantageously characterized in that they allow for the economical production of conical honeycomb bodies (1) having greater mechanical strength. Their variants also make it possible to influence the function of the edge area of the conical honeycomb body (1) in a targeted manner. Especially beading (9, 11), necking (8, 12) and/or rings (7, 10) achieve, for example, a barrier effect so that no fluids are able to circulate in the channels situated in the edge area of the jacket tube (3) in which fluids would be otherwise be able to circulate. The front openings (4, 5) of the jacket tube (3) are free of inserted elements and can therefore be easily be welded to other components of the exhaust-gas system.
摘要:
The invention relates to a particle separator (1) for treating the exhaust gases of an internal combustion engine (2), at least one metal layer (3) through which exhaust gas can flow being located in a housing (4) that comprises an inlet opening (5), an outlet opening (6) and a central axis (7). The housing is provided with at least one maintenance opening (8) that laterally penetrates the housing (4) and provides a passage (9) through to the metal layer (3). The invention discloses in particular a particle separator that can remain operational without having to be dismantled, or that autonomously remains fully open to a flow at all times.
摘要:
A particle separator for treating exhaust gases from an internal combustion engine includes a housing having an inlet opening, an outlet opening, a central axis, a first part with a first joining surface and a second part with a second joining surface. The first and second joining surfaces correspond to one another, so that the first and second parts can be positioned along the central axis relative to one another. At least one metallic layer, through which exhaust gas can flow, spaces the first and second joining surfaces apart over the entire circumference. The particle separator can be manufactured cost-effectively in a simple manner with few measures and, in particular, is suitable for retrofitting to an existing exhaust system. A method for producing the particle separator and a motor vehicle having the particle separator are also provided.
摘要:
The invention relates to a particle separator (1) for treating the exhaust gases of an internal combustion engine (2), at least one metal layer (3) through which exhaust gas can flow being located in a housing (4) that comprises an inlet opening (5), an outlet opening (6), a cross-section (25) and a central axis (7). The at least one metal layer (3) has a corrugation (9) that spans the cross-section (25) of the housing (4). A particle separator of this type has a large surface for providing the lowest possible flow resistance and a low risk of clogging.
摘要:
A device (1) for winding at least partially structured metal sheets into a honeycomb structure (2) comprises at least one winding mandrel (3) in a central region (4) of the device (1) having a receptacle (5) for at least one metal sheet; at least one shaped segment (6) having at least one guide element (7) for guiding the at least one metal sheet during winding, and at least one pivotable clamping jaw (8), the at least one guide element (7) being designed with at least one roll body (9). Also described is a process for producing a honeycomb body (13) with at least partially structured metal sheets. The invention is particularly suitable for producing large honeycomb bodies.
摘要:
A honeycomb body (1) with two opposite end faces (2) has at least one housing (3) and at least one metallic layer (5) which forms channels (4). At least one end face (2) has at least one hard-soldered zone (6) which forms a strip-shaped, solder-free zone (7) adjoining the housing (3). Also disclosed are a process for producing the honeycomb body and preferred fields of use of a corresponding honeycomb body.
摘要:
The invention relates to a catalyst carrier body (1) comprising at least one housing (2), a honeycomb body (4), and a passivation layer (14) containing a plurality of isolated crystal agglomerations (27) having an average height (30) of between 0.3 and 1.5 µm. The invention also relates to different production methods which are especially suitable for producing such catalyst carrier bodies (1). The passivation layer (14) is created by blending and/or mixing an adhesive agent (5) with a passivating substance (6) which is then applied, or by roughening a region using the vapour-blast cutting production method, corundum particles (30) being used as a blasting medium. In this way, a barrier is created in a very simple and economical manner, said barrier preventing, for example, during the creation of solder joints, the then liquid solder from being distributed over the desired joint region as a result of capillary effects.
摘要:
The invention relates to a conical honeycomb body (1), especially a catalyst support body for exhaust-gas systems of internal combustion engines, and a method for producing same which avoids the deformations occurring especially when fixing a conical lamellar body (2) in a conical jacket tube (3). To this end, clamping aids (7; 8; 9, 10; 11; 12; 13, 14) are arranged in the jacket tube (3) at a distance from its front openings (4, 5) and are configured such that at least in sections they have a ring shape. The preferred clamping aids (7; 8; 9, 10; 11; 12; 13, 14) provided for by the invention are advantageously characterized in that they allow for the economical production of conical honeycomb bodies (1) having greater mechanical strength. Their variants also make it possible to influence the function of the edge area of the conical honeycomb body (1) in a targeted manner. Especially beading (9, 11), necking (8, 12) and/or rings (7, 10) achieve, for example, a barrier effect so that no fluids are able to circulate in the channels situated in the edge area of the jacket tube (3) in which fluids would be otherwise be able to circulate. The front openings (4, 5) of the jacket tube (3) are free of inserted elements and can therefore be easily be welded to other components of the exhaust-gas system.