A pillar shaped honeycomb structure includes: a porous partition wall that defines a plurality of cells, the cells forming flow paths for a fluid, the cells extending from an inflow end face to an outflow end face; and an outer peripheral wall located at the outermost circumference. At least a part of surfaces of the partition walls has a surface layer, and the surface layer includes magnetic particles and has permeability.

An exhaust-gas aftertreatment device (10) for an internal combustion engine, particularly for a marine diesel internal combustion engine operated using heavy fuel oil, includes a housing (11); an exhaust-gas chamber (12) defined by the housing (11), for permitting exhaust gas to flow continuously through the housing (11), an inlet (13) for permitting exhaust gas to flow into the housing and an outlet (14) for permitting exhaust gas to flow out of the housing (11); a sound damping chamber (15), defined by the housing (11) and coupled with the exhaust-gas chamber (12). The sound dampening chamber (15) is constructed to receive a fluid or a pourable solid at a fill level depending on the frequency of an exhaust sound to be damped.

A honeycomb body includes wound and/or stacked layers having a geometric center axis, a cavity rotationally symmetrically around the center axis and an outer lateral surface. Each layer extends approximately concentrically around the axis. At least one of the layers is at least partially structured forming channels through which a fluid can flow. The channels extend from the cavity outward to the outer lateral surface at a non-right cone angle to the axis. The channels have a cross-section changing along the channels from inside to outside. At least one structured layer and at least one intermediate layer are alternatingly disposed and helically layered. The structure height of the structured sheet-metal layer forming the channels is substantially constant and channel cross-sectional areas increase from inside to outside. The intermediate layer can be made of simple wires or of specially cut or folded smooth sheet-metal layers.

An exhaust purification system of the internal combustion engine, is provided with: an exhaust purification catalyst having a catalytic function; a particulate filter arranged at a downstream side from the exhaust purification catalyst; an oxygen feed device feeding gas containing oxygen into exhaust gas flowing into the particulate filter; a detection device detecting a concentration of ammonia in exhaust gas flowing out from the particulate filter; and a control device. The control device controls the oxygen feed device so as to feed oxygen from the oxygen feed device to the particulate filter if a temperature of the exhaust purification catalyst is equal to or greater than an activation temperature and an air-fuel ratio of exhaust gas is a rich air-fuel ratio, and estimates the amount of deposition of particulate matter on the particulate filter based on the output of the detection device when feeding oxygen.

A vehicle exhaust system includes a hot end having one or more hot end exhaust components that treat emissions generated by an engine and a cold end that includes at least one cold end component that attenuates noise. At least one acoustic volume is in parallel or serial to the hot end to further attenuate noise.

A pillar shaped honeycomb structure includes: a porous partition wall that defines a plurality of cells, the cells forming flow paths for a fluid, the cells extending from an inflow end face to an outflow end face; and an outer peripheral wall located at the outermost circumference. At least a part of surfaces of the partition walls has a surface layer, and the surface layer includes magnetic particles and has permeability.

A vehicle has an internal combustion engine and an exhaust system. The exhaust system has a first exhaust tract with a first exhaust outlet extending into the atmosphere as well as a second exhaust tract with a second exhaust outlet extending into the atmosphere. The second exhaust outlet is located in front of the first exhaust outlet in the direction of travel of the vehicle.

A vehicle exhaust system includes a component housing defining an internal cavity, a first exhaust gas treatment element positioned within the internal cavity, a second exhaust gas treatment element positioned within the internal cavity and axially spaced from the first exhaust gas treatment element by a gap, and a resonator volume in communication with the internal cavity.

An object is to provide an industrial vehicle whereby it is possible to arrange an exhaust purifying apparatus in an efficient layout, and to achieve a high purifying performance. An industrial vehicle includes: a cargo loading device disposed on a front part of a vehicle; a counter weight disposed on a rear part of the vehicle; an engine housed in an engine room formed in front of the counter weight inside the vehicle; and an exhaust purifying device disposed inside the engine room and configured to purify exhaust gas of the engine.

A silencer for an exhaust gas system of a motor vehicle has an external housing that has at least one inlet opening and at least one outlet opening for exhaust gas. The silencer includes a silencer chamber and a filter monolith through which exhaust gas flows, and which is circumferentially surrounded by the silencer chamber. Also disclosed is a motor vehicle with at least one silencer.