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1.发明授权公开(公告)号：US11591945B2
公开(公告)日：2023-02-28
申请号：US17694189
申请日：2022-03-14
Applicant: Purem GmbH
Inventor： Carsten Kohberg , Markus Henzler , Arthur Wieland
Abstract: 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.
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Patent Agency Ranking
公开(公告)号：US20240183299A1
公开(公告)日：2024-06-06
申请号：US18528551
申请日：2023-12-04
Applicant: Purem GmbH
Inventor： Silas Bräuning , Wolfgang Datz , Markus Henzler , Oleksandr Velyaev , Tobias Wolf , Arthur Wieland
CPC classification number: F01N3/2033 , B01D53/9418 , B01D53/9436 , B01D53/944 , B01F25/30 , B01F25/431 , F01N3/2066 , F01N3/2892 , F01N13/009 , B01D2251/2067 , B01D2251/208 , B01D2257/404 , B01D2257/406 , B01D2258/012 , F01N2610/02 , F01N2610/03
Abstract: 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.
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公开(公告)号：US11536179B2
公开(公告)日：2022-12-27
申请号：US16986618
申请日：2020-08-06
Applicant: Purem GmbH
Inventor： Wolfgang Datz , Markus Henzler , Peter Kast
Abstract: An exhaust gas treatment assembly unit for an exhaust system of an internal combustion engine includes a tubular outer housing (12) elongated in a direction of an outer housing longitudinal axis (LA), a tubular inner housing (14) elongated in the direction of an inner housing longitudinal axis (LI), an exhaust gas treatment unit (16) being carried in the inner housing (14), and a locking fixing device (24) detachably fixing the inner housing in the outer housing. The locking fixing device (24) includes a locking fixing element (26) held at the inner housing (14) in both axial directions with a radially outwards prestressed locking meshing area (28). In association with the locking meshing area (28), a locking receiving area (42) at the outer housing (12), interacts with the locking meshing area (28) for holding the inner housing (14) in the outer housing (12) in at least one axial direction.
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公开(公告)号：US20240183305A1
公开(公告)日：2024-06-06
申请号：US18528470
申请日：2023-12-04
Applicant: Purem GmbH
Inventor： Silas Bräuning , Wolfgang Datz , Markus Henzler , Oleksandr Velyaev , Tobias Wolf , Arthur Wieland
CPC classification number: F01N13/009 , F01N3/2066 , F01N2240/20 , F01N2610/03
Abstract: 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.
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公开(公告)号：US20240183297A1
公开(公告)日：2024-06-06
申请号：US18528504
申请日：2023-12-04
Applicant: Purem GmbH
Inventor： Silas Bräuning , Wolfgang Datz , Markus Henzler , Oleksandr Velyaev , Tobias Wolf , Arthur Wieland
CPC classification number: F01N3/0835 , F01N13/001 , F01N2610/03
Abstract: An exhaust-gas treatment arrangement for an exhaust gas system of an internal combustion engine includes a first exhaust-gas treatment unit and an exhaust-gas treatment assembly being arranged axially one after the other in the direction of a longitudinal axis of a flow path. The flow path includes the first exhaust-gas treatment unit and the exhaust-gas treatment assembly. A hydrocarbon introduction assembly for introducing hydrocarbon into exhaust gas flowing through the exhaust-gas treatment arrangement is provided. The hydrocarbon introduction assembly includes a bypass flow channel which includes a flow-channel inlet region for receiving exhaust gas upstream of the first exhaust-gas treatment unit and a flow-channel outlet region for discharging exhaust gas or/and hydrocarbon into the flow path downstream of the first exhaust-gas treatment unit and upstream of the exhaust-gas treatment assembly. The hydrocarbon introduction assembly includes a hydrocarbon discharging unit for discharging hydrocarbon into the bypass flow channel.
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6.发明申请公开(公告)号：US20220290598A1
公开(公告)日：2022-09-15
申请号：US17694189
申请日：2022-03-14
Applicant: Purem GmbH
Inventor： Carsten Kohberg , Markus Henzler , Arthur Wieland
Abstract: 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.
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