Abstract: A diesel particulate filter coated with selective catalytic reduction includes: a support in which channels are formed from a front side to a rear side, a perovskite catalyst, and a selective catalytic reduction. In particular, the channels include an inlet channel which has an opened inlet and a closed outlet, and an outlet channel which is disposed adjacent to the inlet channel and has a closed inlet and an opened outlet. The perovskite catalyst is provided in an inner surface of the inlet channel, and the selective catalytic reduction is provided in an inner surface of the outlet channel. The perovskite catalyst is represented as La1-xAgxMnO3 (here, 0<X<1).

Abstract: An exhaust purification system is provided with a NOx-occlusion-reduction-type catalyst and a NOx purge rich control unit that executes NOx purge in a case where a catalyst temperature of the NOx-occlusion-reduction-type catalyst is equal to or higher than a catalyst temperature threshold value and a NOx occlusion amount of the NOx-occlusion-reduction-type catalyst is equal to or higher than an NOx occlusion amount threshold value and executes the NOx purge even when the catalyst temperature is lower than a catalyst temperature threshold value in a case where the NOx occlusion amount is equal to or greater than the occlusion amount threshold value, a fuel injection amount resulting from an accelerator operation is equal to or greater than an injection amount threshold value, and an exhaust temperature detected by a first exhaust temperature sensor is equal to or higher than an exhaust temperature threshold value.

Abstract: A catalyzed particulate filter includes at least one inflow channel including one end where a fluid inflows and another end that is blocked and extends in a length direction, at least one outflow channel including one end that is blocked and another end where the fluid outflows, and the other end extends in the length direction, at least one porous wall defining a boundary between the inflow channel and the outflow channel neighboring each other and extending in the length direction, and a catalyzed supporting member disposed on an inside of the outflow channel, wherein the supporting member includes a plurality of balls.

Abstract: An air cleaner for a fuel cell system includes a housing, a first filter, and a second filter. The first filter is arranged inside the housing and collects dust contained in air. The second filter is arranged side by side with the first filter in an air flowing direction inside the housing and adsorbs impure gas contained in air. The first filter includes a filtering member, which has nonwoven fabric and filter paper adhered to the nonwoven fabric. The filter paper is located on a downstream side in the air flowing direction of the nonwoven fabric and has a higher packing density than the nonwoven fabric. The second filter includes a base member having a honeycomb structure with through-holes and adsorbent, which is provided on inner surfaces of the through-holes and adsorbs the impure gas.

Abstract: Selective catalytic reduction filter (SCRF) devices and systems incorporating the same are provided. Systems can include an exhaust gas source, an exhaust gas conduit capable of receiving an exhaust gas stream from the exhaust gas source, and an SCRF device in fluid communication therewith. The SCRF device can include a filter, a selective catalytic reduction (SCR) catalyst disposed on at least portion of the filter, and a soot oxidizing catalyst (SOC) material disposed on at least a portion of one or more of the filter and the SCR catalyst. The SOC material can include one or more transition metal oxides, excluding platinum group metals. The SOC material can include one or more of a titanium oxide, an iron oxide, a tungsten oxide, a cerium oxide, and acidic zirconia. The SOC material can be in amorphous form. The SOC material can be biased towards to the upstream side of the filter.

Abstract: A catalyzed particulate filter may include at least one inlet channel extending in a longitudinal direction, and having a first end into which fluid flows and a second end which is blocked; at least one outlet channel extending in a longitudinal direction, and having a first end which is blocked and a second end through which the fluid flows out; at least one wall that defines the boundary between adjacent inlet and outlet channels and that extends in a longitudinal direction; and at least one support positioned within at least one of the at least one inlet channel and the at least one outlet channel.

Abstract: Methods and systems are provided for an exhaust gas mixer. The system comprises a urea injector injecting urea into a perforated tube having a U-shaped bend housed by the exhaust gas mixing chamber. The perforated tube further has an outlet fluidly coupled with an exhaust passage, with an SCR catalyst positioned downstream of the exhaust passage.

Abstract: Systems are provided for a urea mixer. In one example, the urea mixer may include perforated tube having a toroid shape configured to receive a urea injection and exhaust flow.

Abstract: An after-treatment device includes a first mat having an elongate shape and a second mat having an elongate shape. The first mat and the second mat are entwined, each being in contact with at least three of the four lateral surfaces of each of at least two substrates. Additionally, the first mat and the second mat at least partially overlap such that the first tongue is disposed at least partially in the second opening and the second tongue is disposed at least partially in the first opening to form a continuous layer around all lateral surfaces of each of the at least two substrates placed in an enclosure.

Abstract: An exhaust gas purification material according to the present invention is provided with a particulate filter that traps particulate matter in exhaust gas and contains an SCR catalyst for adsorbing ammonia and reducing NOx in the exhaust gas. A maximum allowable adsorption amount of ammonia adsorbable by the filter differs between an upstream portion of the filter including an exhaust gas inlet-side end, and an downstream portion of the filter including an exhaust gas outlet-side end. A maximum allowable adsorption amount of ammonia A in the upstream portion is smaller than a maximum allowable adsorption amount of ammonia B in the downstream portion (A<B).

Abstract: A retention system for use with an aftertreatment module is disclosed. The retention system may include a first support mat disposed on at least one surface of the at least one catalyst substrate. The retention system may also include at least one support plate having a corrugated portion disposed on the first support mat. The retention system may further include a second support mat disposed on the corrugated portion.

Abstract: An exhaust gas purification device includes: a wall-flow-structured base material having input-side cells, output-side cells, and a porous partition wall; and a catalyst layer formed inside the partition wall contacting the input-side cells or the output-side cells. The catalyst layer is formed in a region extending from the surface of the partition wall and covering at least 90% of the thickness of the partition wall, and is held by the surfaces of the inside pores of the partition wall in the region. Further, the average filling ratios A, B, and C of the catalyst layer held by pores in respective pore size ranges satisfy a specific relationship.

Abstract: An inorganic fiber-formed article, composed of a mat-shaped inorganic fiber assembly, the inorganic fiber-formed article including needle marks that extend in a direction including a thickness direction of the mat-shaped inorganic fiber assembly, where the needle marks include needle marks A and needle marks B having a diameter smaller than that of the needle marks A, dense portions in which a plurality of the needle marks A lie densely are arranged apart, non-dense portions in which a needle mark density of the needle marks A is lower than that in the dense portions are present between the dense portions in both a first direction which is any mat-surface direction extending through the dense portions and a second direction orthogonal to the first direction, and the needle marks B are present at least in the non-dense portions.

Abstract: A decomposition reactor for an exhaust system includes an exterior component defining an internal volume and having an inlet and an outlet with the inlet and outlet are formed on a same side of the exterior component. A flow divider is positioned within the internal volume and defines a thermal management chamber and a main flow chamber. A first flow path of exhaust flows from the inlet into the main flow chamber to mix with dosed, and a second flow path of exhaust flows from the inlet into the thermal management chamber to control a temperature of a portion of the flow divider. In some implementations, one or more swirling diverters can be coupled to the flow divider and positioned proximate the outlet of the exterior component to impart a vortical motion to a combined reductant and exhaust gas flow exiting out the outlet.

Abstract: An aftertreatment system comprises a SCR system. The SCR system includes a housing having an inlet, an outlet and defining an internal volume. At least one catalyst can be positioned within the internal volume. A mounting support is positioned around at least a portion of a perimeter of the housing. A heat shield is positioned around the perimeter of the housing such that the housing is positioned substantially within the heat shield. A portion of the heat shield is disposed on and in contact with the mounting support. A clamp is positioned around a heat shield perimeter. The clamp is positioned on the portion of the heat shield disposed on and in contact with the mounting support. The mounting support is configured to transmit a clamping force of the clamp on the heat shield to the housing to prevent buckling of the heat shield from the clamping force.

Abstract: The flue gas treatment system (1) comprises a reactor (2), a pre-separator (3) downstream of the reactor (2), a separator (4) such as a fabric filter downstream of the pre-separator (3), a humidifier (5) downstream of the separator (4), a supply (7) of a pure fresh reagent into the flue gas (FG) downstream of the pre-separator (3) and upstream of or at the separator (4).

Abstract: A dual-layer catalyst includes a substrate, a first layer disposed on the substrate, and a second layer disposed on the first layer. The first layer includes a first catalyst for storing NOx when the first catalyst has a temperature below an active temperature of a second catalyst. The first catalyst is to release the stored NOx when the first catalyst is heated to the active temperature of the second catalyst. The second layer includes the second catalyst for ammonia Selective Catalytic Reduction of the released NOx. The dual-layer catalyst is to be included in a catalytic converter and a catalyst system for reducing NOx emissions from a diesel engine, the NOx emissions including NOx emitted during a predetermined cold-start time period.

Abstract: An exhaust gas control apparatus includes a catalytic device in an exhaust passage, and the catalytic device carrying an NSR catalyst and an oxygen storage agent. A poisoning recovery control section of the catalytic device executes poisoning recovery control and includes: an oxygen storage amount estimation section that estimates an oxygen storage amount of the catalytic device; a determination section that determines timing at which an estimation value of the oxygen storage amount becomes equal to or smaller than an elimination start determination value after a start of elimination processing in the poisoning recovery control as elimination start timing; and a termination timing decision section that decides termination timing of the poisoning recovery control on the basis of a supply amount of a reducing agent to the catalytic device in a period after the elimination start timing during the elimination processing.

Abstract: The catalyst module is designed for use in an emission control system of a stationary incinerator. It comprises a stack frame, into which several mounting units are inserted strung together. The mounting units have a peripheral side wall as well as several partitions, which are entangled with one another and form a lattice with a plurality of mounting shafts, in which in each case one catalyst is inserted. The catalysts are pressed into position preferably with the interposition of an elastic fitting element.

Abstract: A vehicle exhaust system includes a mixer and a doser that sprays a reducing agent into the mixer to be thoroughly mixed with engine exhaust gases prior to introduction of the mixture into a downstream exhaust component. The mixer includes an upstream baffle with at least one inlet opening and a downstream baffle with at least one outlet opening. An outer peripheral wall surrounds the upstream and downstream baffle and includes a doser opening. A doser is mounted at the doser opening and is configured to spray a reducing agent into an area between the upstream and downstream baffles. A deflector is positioned between the inlet opening and the doser opening to protect spray at the doser opening from direct impact with exhaust gas from the inlet opening, and an impactor is positioned adjacent the deflector and faces the doser opening.