A catalysed filter system for treating particulate-containing exhaust gas from a stationary emission source comprises an elongate filter element comprising porous walls which define a hollow section and a substrate material supporting a catalyst component disposed within the hollow section, the arrangement being such that gas entering the hollow section of the elongate filter element from across the porous walls thereof must contact the substrate material supporting the catalyst component before exiting the hollow section of the elongate filter element.

A panel assembly includes a panel member, a frame member, and at least one first bar member, and at least one second bar member. The at least one first bar member and the at least one second bar member divide the panel member into a plurality of first areas defining a first height and a first width. The panel assembly also includes a plurality of support arrangements for dividing each first area into a plurality of second areas. Each support arrangement includes a first support member defining a first length such that the first width defined by the first area is greater than the first length. Each support arrangement also includes a second support member defining a second length such that the first height defined by the first area is greater than the second length.

An SCR system includes at least one catalyst, and an intake conduit. The intake conduit includes an intake conduit first sidewall, at least a portion of which defines a first curvature. An intake conduit second sidewall is coupled to the intake conduit first sidewall so as to define the intake conduit. A catalyst is fluidly coupled to the intake conduit through the intake conduit second sidewall. The intake conduit second sidewall is inclined at a first angle with respect to a longitudinal axis of the SCR system, such that an intake conduit second end cross-section of the intake conduit is smaller than an intake conduit first end cross-section. An intake conduit third sidewall is positioned at the intake conduit second end. The intake conduit is structured to produce an even flow split of the exhaust gas through the intake conduit internal volume towards the catalyst.

The invention relates to an exhaust aftertreatment system (1) for a combustion engine (110), comprising, an outer casing (2) comprising at least one exhaust gas inlet (3) and at least one exhaust gas outlet (4), at least one catalyst (6, 6′) being located in an inner volume (5) of the outer casing (2), wherein the system (1) is configured such that during use of the system (1) exhaust gas flows from the at least one exhaust gas inlet (3) at an inlet velocity, through the at least one catalyst (6, 6′) at a catalyst velocity, into the inner volume (5) outside the at least one catalyst (6, 6′) and to the at least one exhaust gas outlet (4), and further such that the exhaust gas flows in the inner volume (5) outside the at least one catalyst (6, 6) through at least one cross sectional area (A) being defined and limited by at least a perimeter surface (61, 61′) of the at least one catalyst (6, 6′) and an inner surface (21) of the outer casing (2) or by at least two catalyst parameter surfaces (61, 61′), wherein the at least one cross sectional area (A) is sized such that during use of the system (1) the exhaust gas flows through the at least one cross sectional area (A) at a first inner volume velocity being higher than the catalyst velocity, and wherein the system (1) further comprises at least one sensor (7) for measuring at least one parameter being related to the exhaust gas, said at least one sensor (7) being located in the inner volume (5) at a location where an exhaust gas flow velocity is higher than the catalyst velocity. The invention also relates to a vehicle (100) comprising such a system (1).

A honeycomb structure including: a pillar-shaped honeycomb structure body, the honeycomb structure body being configured to include a circumferential portion and a central portion, wherein a shape of the cells is a triangle or a hexagon having at least one symmetrical axis, in the shape of the cells, a number of the symmetrical axes is defined as A, a number of vertices of the shape of the cells is defined as N, and a value shown in a following Equation (1) is defined as θ, an arrangement direction of the cells in the circumferential portion is inclined in a range of θ−15° to θ+15° with respect to an arrangement direction of the cells in the central portion. $\begin{array}{cc}\theta =\frac{180}{A}.Math.\frac{N}{6}& \mathrm{Equation}\left(1\right)\end{array}$

An SCR system includes at least one catalyst, and an intake conduit. The intake conduit includes an intake conduit first sidewall, at least a portion of which defines a first curvature. An intake conduit second sidewall is coupled to the intake conduit first sidewall so as to define the intake conduit. A catalyst is fluidly coupled to the intake conduit through the intake conduit second sidewall. The intake conduit second sidewall is inclined at a first angle with respect to a longitudinal axis of the SCR system, such that an intake conduit second end cross-section of the intake conduit is smaller than an intake conduit first end cross-section. An intake conduit third sidewall is positioned at the intake conduit second end. The intake conduit is structured to produce an even flow split of the exhaust gas through the intake conduit internal volume towards the catalyst.

The invention relates to an air cleaner for a vehicle which can be installed on the rear of the vehicle, which includes a suction pipe provided with a slit having a length corresponding to a width of the vehicle, an air pump connected to inside of the suction pipe by a guide pipe, and a filter means connected to the air pump. The air cleaner is operated in a way of sucking exhaust gas and fine dust generated from an exhaust line of the vehicle together with fine dust and dust particles generated around tires of the vehicle during driving of the vehicle, removing them, and then discharging purified air to the atmosphere. The air cleaner can effectively remove the fine dust and various-shaped dust particles directly and indirectly generated from the vehicle, and remarkably reduce generation of fine dust by considerably suppressing diffusion of fine dust into atmosphere.

A vehicle engine aftertreatment system includes: a purification module including a plurality of aftertreatment devices having different characteristics, the aftertreatment devices being arranged in parallel; an upstream selection device provided at one side of the purification module for selectively supplying exhaust gas from an engine to one of the aftertreatment devices; and a downstream selection device provided at the other side of the purification module for discharging exhaust gas from one of the aftertreatment devices to out of the purification module.

An SCR after-treatment system for a locomotive engine includes an enclosure defining an exhaust flow path from an inlet to an outlet, the inlet being flexibly connected to an exhaust outlet of the engine, an injector located in the inlet and configured to provide an aerosolized reductant into the exhaust flow path, a mixing tube extending from the inlet into the enclosure towards a back wall of the enclosure; a plurality of catalyst cells extending parallel to the mixing tube; the exhaust flow path traveling through the plurality of catalyst cells between the mixing tube and the outlet, and a side channel located between the mixing tube and the plurality of catalyst cells. The enclosure is configured to create low back pressure and an even distribution of the exhaust flow path across the plurality of catalyst cells.

An element frame assembly (1) comprising an element frame (2) for holding at least one monolith (3) containing catalysts in the flow of exhaust gases from a combustion source. The element frame (2) comprising two pairs of opposing walls (10), an interior (11) formed by the walls (10), an inlet end (12) and an outlet end (13). The least one monolith (3) comprising an inlet (20), an outlet (20), four sides (22) and at least one catalyst. At least one knit wire mesh bearing element (4) is provided such that there is at least a portion of the at least one knit wire mesh bearing element (4) between the at least one monolith (3) and each adjacent wall (10) of the element frame (2).