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.

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.

An aftertreatment system for treating constituents of an exhaust gas includes: a housing defining a first internal volume and a second internal volume; an oxidation catalyst in the first internal volume and extending along a first axis, the oxidation catalyst configured to receive at least a portion of the exhaust gas via an inlet conduit fluidly coupled to the oxidation catalyst; a filter in the first internal volume and extending along a second axis parallel to and offset from the first axis, wherein an outlet of the filter is disposed within the second internal volume and configured to emit the exhaust gas into the second internal volume; at least one selective catalytic reduction (SCR) catalyst in the second internal volume and extending along a third axis that is perpendicular to the first axis; and a decomposition tube in the second internal volume in a direction parallel to the third axis.

An exhaust gas purification system of a working machine is operable to reduce a loss of a working time caused by a point that it takes a long time to renew an exhaust gas purification device by throttle devices. The exhaust gas purification system of the working machine is provided with a common rail type engine which is mounted to the working machine, an exhaust gas purification device which is arranged in an exhaust system of the engine, and at least one of the intake air throttle device and the exhaust gas throttle device. It is provided with mode selection input means which selects whether an auxiliary renewing mode is executed or a forced renewing mode is executed in the case that a clogged state of the exhaust gas purification device is equal to or more than a prescribed level.

Implementations described herein relate to features for a single module aftertreatment system. The single module aftertreatment system includes a casing, a catalyst within the casing, and a sensor mount coupled to the casing. The sensor mount is angled relative to a portion of the casing at a position where the sensor mount is coupled to the casing. The sensor mount includes a first attachment leg, a second attachment leg, and an angled mounting portion. The angled mounting portion connects the first attachment leg to the second attachment leg. The sensor mount is coupled to the casing by the first attachment leg and the second attachment leg such that the first attachment leg, the second attachment leg, and the angled mounting portion form an air gap relative to the casing.

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.

An exhaust gas purification system of a working machine is operable to reduce a loss of a working time caused by a point that it takes a long time to renew an exhaust gas purification device by throttle devices. The exhaust gas purification system of the working machine is provided with a common rail type engine which is mounted to the working machine, an exhaust gas purification device which is arranged in an exhaust system of the engine, and at least one of the intake air throttle device and the exhaust gas throttle device. It is provided with mode selection input means which selects whether an auxiliary renewing mode is executed or a forced renewing mode is executed in the case that a clogged state of the exhaust gas purification device is equal to or more than a prescribed level.

A silencing accessory or specially designed muffler to be attached to the exhaust of a portable generator, which is specially designed to reduce or eradicate excessive noise, as well as filter emissions. The present invention comprises a replaceable filter to provide a product that solves the problems of noise and air pollution created by these necessary units

An exhaust gas treatment system comprising a first and a second structure being in fluid communication and defining a flow path of the exhaust gases, the second structure being supported by the first structure, the first structure comprising a first catalytic converter downstream a mixing chamber, the first catalytic converter having a fluid connection to an outlet of exhaust gases, the second structure including a filter unit housing removably connected to the first structure and to an inlet module by a filter unit housing fixing, the second structure defining a longitudinal axis, the filter unit housing including a filter unit, and the inlet module including a second catalytic converter and having a fluid connection to an inlet of exhaust gases, the filter unit housing and/or the inlet module being configured to allow its removal from the exhaust gas treatment system.

An aftertreatment system for treating constituents of an exhaust gas includes: a housing defining a first internal volume and a second internal volume; an oxidation catalyst in the first internal volume and extending along a first axis, the oxidation catalyst configured to receive at least a portion of the exhaust gas via an inlet conduit fluidly coupled to the oxidation catalyst; a filter in the first internal volume and extending along a second axis parallel to and offset from the first axis, wherein an outlet of the filter is disposed within the second internal volume and configured to emit the exhaust gas into the second internal volume; at least one selective catalytic reduction (SCR) catalyst in the second internal volume and extending along a third axis that is perpendicular to the first axis; and a decomposition tube in the second internal volume in a direction parallel to the third axis.