A particulate filter for a motor vehicle has a casing (2) that allows through flow. A core (4) is accommodated in the casing (2) and allows through flow. The casing (2) has a longitudinal axis (3). A through flow duct (9) is formed between the casing (2) and the core (4) to allow the through flow of exhaust gas from an internal combustion engine of the motor vehicle. A ring (7) is arranged in the through flow duct (9) and gives the through flow duct (9) a labyrinth-type configuration.

An exhaust gas pressure regulator for a combustion engine includes a regulator housing and an inner diffuser assembly arranged inside the regulator housing so that an exhaust gas flow duct is formed between an inner surface of the regulator housing and an outer surface of the inner diffuser assembly. The inner diffuser assembly includes a front portion and a regulating piston that is moveable relative to the front portion and the regulator housing between an idle position in which the exhaust gas flow duct is open, and a pressurized position in which the regulating piston at least partly closes the exhaust gas flow duct. The inner diffuser assembly includes at least one throttled flow passage between the gas flow duct and an exhaust gas pressure chamber defined by the regulating piston and an interior surface of the front portion.

A sealing device for an exhaust manifold in a vehicle having longitudinally overlapping first and second components separated by a gap includes a plurality of backing rings for positioning in the gap between the first and second components. An intumescent mat is positioned between and abuts the backing rings. A retainer connected to the first and second components covers the gap to prevent the backing rings and mat from exiting the gap while allowing for relative longitudinal and rotational movement between the first and second components.

A pipe connection structure according to an embodiment of the present invention includes: two inlet pipes through which a gas is capable of flowing; a connection pipe to which respective outlet-side end portions of the two inlet pipes are connected at a distance; and an outlet pipe connected to the connection pipe at an opposite side to a side where the two inlet pipes are connected to the connection pipe, the outlet pipe being capable of being in communication with the two inlet pipes via a space section inside the connection pipe. The two inlet pipes include a first inlet pipe disposed on a first side and a second inlet pipe disposed on a second side, in a width direction of the connection pipe, across a middle of connection positions of the two inlet pipes to the connection pipe. The outlet pipe is connected to a position offset toward the second side in the width direction of the connection pipe. Along an axial direction of the first inlet pipe, the space section inside the connection pipe has an axial length not smaller than a virtual diameter D defined by following expression (1) D=(4A/), where A is a cross-sectional area of the first inlet pipe and is pi.

An exhaust conduit for a marine exhaust system includes an inlet end portion connectable to an exhaust manifold, an outlet end portion that directs exhaust gases toward an exhaust system outlet, a catalytic converter assembly arranged between the inlet and outlet end portions, and inner and outer tubes. The inner tube directs exhaust gases from the exhaust manifold to the catalytic converter assembly, and the outer tube surrounds the inner tube to define a cooling liquid passage between the inner and outer tubes. A flange is secured to the inner and outer tubes at inlet ends thereof, the flange being connectable to an outlet of the exhaust manifold. The inner tube has a uniform diameter between the flange and the catalytic converter assembly, and is welded to the flange independently of the outer tube. First and second welds join the inner and outer tubes to the flange at radially inner and outer faces, respectively, of a flange rim.

A mobile emissions control system is provided for diesel engines operated on ocean-going ships at-berth. The emissions control system comprises two essential elements: an emissions capturing system and an emissions control system. The emissions control system may be mounted on a towable chassis or mounted on a barge, allowing it to be placed alongside ocean-going ships at-berth. The emission capturing system captures exhaust from a ship's diesel engine and conducts it into the emissions control system, which cleans the exhaust and then passes clean air into the atmosphere through an exhaust outlet.

A flow device, a stem flow guide for an air-free reactant doser (230), and an exhaust gas aftertreatment system including same; in which a bowl (910) extends along the reactant doser (230) surrounding a doser axis defined by the air-free reactant doser. The bowl (910) defines a plurality of slots (810) at a downstream edge thereof and spaced circumferentially around the doser axis. The flow device includes the stem flow guide. The exhaust gas aftertreatment system includes a mixing tube (220).

An after-treatment system includes, in series along an exhaust gas flow direction through the after-treatment system: a diesel oxidation catalyst (DOC), a diesel exhaust fluid (DEF) delivery device, a soot-reducing device and a selective catalytic reduction (SCR) catalyst.

Provided are an inorganic fiber-formed article having both high basis weight and excellent peel strength and a mat for an exhaust gas cleaning apparatus and an exhaust gas cleaning apparatus including the inorganic fiber-formed article. The inorganic fiber-formed article includes inorganic fibers and needle marks extending in the thickness direction and including vertical bundles composed of the inorganic fibers extending in the thickness direction, in which the average volume of the vertical bundles per needle mark measured by a prescribed peel test is 1.0 mm.sup.3 or more.

Included are: a CO2 adsorber 7 including a plurality of adsorption passages 71 allowing exhaust gas to flow through and an adsorbent, on its wall surface, capable of adsorbing and desorbing CO2 depending on a temperature, and a heat exchanger 6 including a plurality of heat exchange passages 61 allowing the exhaust gas to flow through, being disposed in contact with the CO2 adsorber 7, and, when the exhaust gas flows through the heat exchange passages 61, transferring the heat to the CO2 adsorber 7 for heating it while removing the heat of the exhaust gas. The numbers of adsorption cells 72 and heat exchange cells 62 per unit area in a transverse section C are each set to a predetermined number and/or the sizes of the adsorption cell 72 and the heat exchange cell 62 in the transverse section C are each set to a predetermined size.