An automotive vehicle includes an exhaust aftertreatment system. The exhaust aftertreatment system includes a mixer, a doser that injects a reducing agent into the mixer, and a selective catalytic reduction unit. The exhaust aftertreatment system mixes exhaust gases and the reducing agent for treatment prior to the exhaust gases being discharged into the atmosphere. Some components of the exhaust aftertreatment system are positioned proximate to an associated combustion engine to minimize thermal energy loss from the exhaust gases prior to interaction with the exhaust aftertreatment system.

An SCR exhaust aftertreatment device of an internal combustion engine, containing an injector for injecting a reductant, a mixing unit and an SCR catalytic converter disposed immediately downstream in the direction of exhaust flow, wherein the mixing unit exhibits a swirl element and an impact element positioned upstream of the swirl element in the direction of exhaust flow, whereby the swirl element is configured of two guide elements disposed inside one another and swirl vanes for creating a swirling motion are disposed in an inner guide element and swirl vanes, which create a counterswirling motion, are disposed between the inner guide element and the outer guide element.

A metal substrate for catalytic converter is characterized by: a flat foil and a corrugated metal foil arranged on a gas inlet side end section being joined to each other; the flat foil and the corrugated metal foil arranged in an outer circumferential joining section being joined to each other, said outer circumferential joining section being connected to an end section of the gas inlet side end section in the axial direction; an outer jacket and the honeycomb core being joined by interposing a bonding layer in the gas outlet side end section area P fulfilling formula (A), when P is the length of the bonding layer in the axial direction; a corrugated metal foil having an impact mitigating section; the impact mitigating section being formed in an area corresponding to at least the gas inlet side end section and the outer circumferential joining section.
2 mmP50 mm(A):

A mixer arrangement for mixing an additive with an exhaust-gas flow, having an exhaust-gas line, an exhaust gas flowing through the exhaust-gas line in a main flow direction, and having at least one exhaust-gas purification element which is arranged in the exhaust-gas line and which has a casing and, arranged within the casing, a flow-over surface for the exhaust gas. Here, the casing of the at least one exhaust-gas purification element has a guide structure.

A honeycomb body for a catalyst for aftertreatment of exhaust gas of an internal combustion engine, formed of a plurality of metal foils, which are stacked one on top of the other to form a layer stack and wound about at least one point of rotation. At least some metal foils have an at least partial structuring, by which flow channels are formed between the individual layers, through which flow channels gas can flow in a main flow direction from a gas inlet side of the honeycomb body to a gas outlet side. The honeycomb body is formed of two sub-portions over which the flow channels extend substantially without interruption, the sub-portions are positioned at an angle of at least 45 degrees relative to one another.

In one embodiment of the present disclosure, a method of manufacturing perforated metal honeycomb material includes: printing a roll of metal foil with adhesive; laser perforating the roll of metal foil to provide a plurality of holes in the metal foil; sheeting the printed and perforated roll of metal foil into a plurality of stacked sheets; and laminating the sheets of metal foil into a honeycomb before expansion block (HOBE). In another embodiment of the present disclosure, a perforated metal honeycomb structure includes a metal honeycomb structure having a plurality of laser-drilled holes wherein at least some of the plurality of holes are non-uniform in size, shape, and/or spacing between holes.

An exhaust-gas treatment unit includes: a supply line, for exhaust gas, having an entry opening and an exit opening, and a first exhaust-gas treatment body into which the exhaust gas flows through the entry opening and out of which the exhaust gas exits at the exit opening; a housing into which the supply line extends via the exit opening, the housing forming an intermediate space around the supply line; an outlet space in the housing being arranged laterally with respect to the supply line; and a dividing device arranged between the intermediate space and the outlet space. The intermediate space is configured such that the exhaust gas passes out of the intermediate space and is divided into at least two partial streams which, in the direction of the outlet space, are conducted into the outlet space in opposite directions by at least two openings formed by the dividing device.

An internal combustion engine emissions reduction system in which a emissions passing through a second catalyst element having a second catalyst function are mixed with emissions passing through a first catalyst element having a first catalyst function.

A muffler integrated type gasoline particulate filter includes a filter having first and second surfaces and first channels and second channels alternately arranged, each of the first channels being closed at the second surface and each of the second channels being closed at the first surface, the filter collecting exhaust gas particulates when exhaust gas passes through a wall surface disposed between the first and second channels. The muffler integrated type gasoline particulate filter further includes protruding walls formed on an inner wall surface of each of the first and second channels in a longitudinal direction thereof. The protruding walls reduce noise of the exhaust gas flowing along each of the first and second channels.

An SCR exhaust aftertreatment device of an internal combustion engine, containing an injector for injecting a reductant, a mixing unit and an SCR catalytic converter disposed immediately downstream in the direction of exhaust flow, wherein the mixing unit exhibits a swirl element and an impact element positioned upstream of the swirl element in the direction of exhaust flow, whereby the swirl element is configured of two guide elements disposed inside one another and swirl vanes for creating a swirling motion are disposed in an inner guide element and swirl vanes, which create a counterswirling motion, are disposed between the inner guide element and the outer guide element.