A thermoelectric power generator includes: a pipe in which a first fluid flows; a power generation module including a thermoelectric conversion element; and a holding member that is in contact with a one side part of the power generation module, such that heat of a second fluid that is higher in temperature than the first fluid transfers to the one side part of the power generation module. The holding member holds the power generation module and the pipe in a heat transferable state, such that the pipe is in contact with the other side part of the power generation module. The thermoelectric power generator includes a heat conductive component interposed between the holding member and the pipe to define a heat transfer course through which heat transfers from the second fluid to the first fluid, at downstream of the power generation module in a flowing direction of the second fluid.

An aftertreatment component includes an aftertreatment housing. The aftertreatment housing has a first surface positioned so as to be directly impinged by diesel exhaust fluid injected into the aftertreatment housing. The first surface is a polished surface.

A device for the aftertreatment of exhaust gases of an internal combustion engine, having at least one catalytic converter, through which exhaust gas can flow, and at least one muffler formed by a closed volume and through which exhaust gas can flow along an inflow section to an outflow section. The catalytic converter is formed by a honeycomb body that has a plurality of flow channels through which exhaust gas can flow. The honeycomb body is accommodated in a casing tube, which surrounds the honeycomb body, and is connected to the casing tube in a materially bonded manner. The catalytic converter is arranged in the interior of the muffler.

This ferritic stainless steel pipe contains, by mass %: C: 0.001% to 0.100%; Si: 0.01% to 2.00%; Mn: 0.01% to 2.00%; P: 0.001% to 0.05%; S: 0.0001% to 0.005%; Cr: 10.5% to 20.0%; Sn: 0.001% to 0.600%; Ti: 0.001% to 1.000%; Al: 0.001% to 0.100%; and N: 0.001% to 0.02%, with a balance being Fe and unavoidable impurities, the ferritic stainless steel pipe includes a pipe-end-thickened portion at a pipe end portion, and a gap distance d (μm) formed at the pipe end portion satisfies a relationship of d≥Cr.sup.2/(1000Sn) (in the expression, Cr and Sn represent amounts (mass %) of respective elements).

A muffler system with a muffler in one aspect of the present disclosure includes an outer wall, and a first separator and a second separator that partition a muffling space. An attachment member is arranged on an outer surface of the outer wall, and a muffler pipe to communicate with the muffling space is arranged to pass through an attachment member hole in the attachment member. The outer surface of the outer wall includes a first area and a second area. The first area is located between a first end of the muffling space and the first separator, and the second area is located between a second end of the muffling space and the second separator. The attachment member is welded to the first and second areas of the outer surface of the outer wall.

A process for manufacturing an exhaust system, especially for an internal combustion engine of a vehicle, includes providing an exhaust gas-guiding component (26) with a wall (38) made of a metallic material and providing a sensor-mounting connector (22), to be fixed at the wall. The sensor-mounting connector includes a sensor-mounting area (28) to be positioned outside the exhaust gas-guiding component, and a connection area (34), which is to be positioned such that the connection area meshes with the wall. The connection area is pressed against an outer surface (40) of the wall of the exhaust gas-guiding component in a fastening area (39) of the wall, and at the same time rotated about a longitudinal axis (A) of the connector to penetrate into the material forming the wall and a connection in substance is established between the metallic material of the wall and the metallic material of the sensor-mounting connector.

A shield for a diesel exhaust fluid injector is mounted in an opening in a side wall of an exhaust gas aftertreatment system of an internal combustion engine. The diesel exhaust fluid injector is configured to inject diesel exhaust fluid in a direction generally normal to the side wall into a mixer positioned in an exhaust gas stream. The shield includes a first portion extending axially and a second portion extending radially inwardly from the first portion.

A novel sound absorbing sheet material with a unique combination of micro-louver slit parameters and patterns provides superior noise attenuation and a reduced perforation area (less than 3.5%) to better protect fiberglass insulation when used in a muffler assembly. A muffler assembly is disclosed incorporating the novel sound absorbing sheet as the inner exhaust conduit.

An exhaust-gas treatment device for arrangement in an exhaust system of a motor vehicle, having a heating element, which is assigned to an exhaust-gas aftertreatment component, for example, a catalytic converter. The heating element is formed by a heating conductor and by a holder coupled to said heating conductor, wherein the holder extends over the cross-sectional area of the heating element, and the holder is formed by a lattice-like structure, wherein the lattice-like structure is formed by arcuate spokes which are coupled to one another in an irregular manner, wherein the heating conductor and the holder have a basin-like configuration as viewed in longitudinal section in an exhaust-gas flow direction.

The method for suppressing formation of a high-melting-point pipe-clogging substance includes disposing a urea-solution supply pipe (6) configured to supply pressurized air and a urea solution into a pipe through which exhaust gas flows, connecting a urea-solution spray nozzle (7) near a tip of the urea-solution supply pipe (6), providing a mixing section (8) configured to mix the exhaust gas flowing through the pipe and a sprayed urea solution sprayed from the urea-solution spray nozzle (7), circumferentially providing a metal sheet (9) on all or part of an inner wall surface of the pipe in a belt-like manner around the mixing section (8), and forming a hydrolysis catalyst layer (10) configured to promote hydrolysis of urea on an inner surface of the metal sheet (9).