Purem Gmbh

Eberspächer Exhaust Technology Gmbh & Co. Kg

Volvo Truck Corporation

Markus Henzler

Wolfgang Datz

Tobias Wolf

Arthur Wieland

Peter Kast

Oleksandr Velyaev

Silas Bräuning

Michael Mayer

Simon Ehrler

Oleksander Vyelyayev

Carsten Kohberg

Torsten Bucher

Olexander Vyelyayev

Oleksandr Vyelyayev

An exhaust-gas treatment arrangement for an exhaust system of an internal-combustion engine includes a diesel internal-combustion engine. The arrangement includes a first exhaust-gas treatment unit and, downstream of the first exhaust-gas treatment unit, an exhaust-gas treatment assembly. The first exhaust-gas treatment unit and the exhaust-gas treatment assembly are arranged axially succeeding one another in the direction of a longitudinal axis of a flow path encompassing the first exhaust-gas treatment unit and the exhaust-gas treatment assembly. A hydrocarbon-feeding assembly is provided for feeding hydrocarbon into exhaust gas flowing in the flow path. The hydrocarbon-feeding assembly includes a hydrocarbon-dispensing unit dispensing hydrocarbon into the flow path downstream of the first exhaust-gas treatment unit and upstream of the exhaust-gas treatment assembly. A swirl-flow-generating unit is provided in the flow path upstream of the hydrocarbon-dispensing unit.

Exhaust-gas treatment arrangement

An exhaust-gas treatment arrangement for an exhaust-gas system of a combustion engine has a first exhaust-gas treatment unit and, downstream thereof, an exhaust-gas treatment assembly. The treatment unit and the treatment assembly are arranged axially one after the other in the direction of a flow-path longitudinal axis of a flow path including the treatment unit and the treatment assembly. A hydrocarbon introducer for introducing hydrocarbon into exhaust gas flowing in the flow path is in the flow path substantially axially between the treatment unit and the treatment assembly. The hydrocarbon introducer includes an introduction ring flow channel annularly surrounding the flow-path longitudinal axis. The channel is open in an upstream end region toward an outlet region of the treatment unit and is open in a downstream end region toward an inlet region of the treatment assembly. The hydrocarbon introduction assembly includes a discharging unit for discharging hydrocarbon into the channel.

An exhaust gas treatment arrangement for an exhaust gas system of an internal combustion engine includes an exhaust gas channel leading to a flow path switching unit. The flow path switching unit is configured for changing exhaust gas parts of an exhaust gas stream flowing through the exhaust gas channel, which are conducted into first and second exhaust gas flow paths downstream of the flow path switching unit. The first exhaust gas flow path and the second exhaust gas flow path lead to an exhaust gas outlet. An SCR catalyst unit is in the first exhaust gas flow path upstream of the exhaust gas outlet. A liquid bypass line drains liquid from a liquid collection region in the exhaust gas channel upstream relative to the switching unit. The liquid is drained to a liquid discharge region for discharging liquid into the second flow path downstream of the switching unit.

Exhaust gas treatment arrangement for an exhaust gas system of an internal combustion engine

An exhaust gas treatment assembly unit for an exhaust system of an internal combustion engine includes a tubular outer housing () elongated in a direction of an outer housing longitudinal axis (L), a tubular inner housing () elongated in the direction of an inner housing longitudinal axis (L), an exhaust gas treatment unit () being carried in the inner housing (), and a locking fixing device () detachably fixing the inner housing in the outer housing. The locking fixing device () includes a locking fixing element () held at the inner housing () in both axial directions with a radially outwards prestressed locking meshing area (). In association with the locking meshing area (), a locking receiving area () at the outer housing (), interacts with the locking meshing area () for holding the inner housing () in the outer housing () in at least one axial direction.

Exhaust gas treatment assembly unit

An internal combustion engine, exhaust system, exhaust gas treatment device includes an housing () including a housing inlet () and a housing outlet (). An exhaust gas treatment unit (), in the housing, includes an inlet () following the housing inlet and an outlet (). An SCR catalytic converter device (), in the housing, includes an SCR catalytic converter device inlet () following the exhaust gas treatment unit outlet and an SCR catalytic converter device outlet (). A reactant releasing device () releases reactant upstream of the SCR catalytic converter device inlet. An exhaust gas duct (), formed in an exhaust gas pipe (), leads in the housing from the exhaust gas treatment unit outlet to the SCR catalytic converter device inlet, whereby exhaust gas leaving the SCR catalytic converter device at the SCR catalytic converter device outlet flows around the exhaust gas pipe in at least some areas.

Exhaust gas treatment device

An exhaust system for an internal combustion engine includes an exhaust gas flow duct (), through which exhaust gas can flow in an exhaust gas main flow direction (A), and a reactant injection device () for injecting reactant in a reactant injection area () of the exhaust gas flow duct () in a reactant main injection direction (R). The reactant main injection direction (R) and the exhaust gas main flow direction (A) in the reactant injection area () are not parallel and not at right angles to one another.

Exhaust system

An exhaust gas treatment device (), for an exhaust system of an internal combustion engine, includes a tubular housing () and an insert () arranged replaceably in the housing (). The insert () has an exhaust gas treatment element () fixed in a tubular jacket () and is able to be pushed into the housing () in a pushing-in direction (), which extends parallel to a central longitudinal axis () of the housing (). The jacket () has, on an outer side (), an axial stop (), axially in contact with an axial counterstop () in the pushing-in direction () and is formed on the housing () on an inner side (). A locking element () is axially supported on a support contour (), is formed on the jacket () in the pushing-in direction (), and is provided on the inner side () of the housing.

Growing community of inventors

Grafenberg, Germany

Markus Henzler