Device to convey a chemical reactant into the exhaust gas stream of a combustion engine

    公开(公告)号:US11473473B2

    公开(公告)日:2022-10-18

    申请号:US17420512

    申请日:2020-01-14

    IPC分类号: F01N3/28 F01N3/035 F01N3/20

    摘要: A device for supplying a chemical reactant into the exhaust system of an internal combustion engine, comprising: a mixer housing; a metering pipe passing through the mixer housing, towards which the exhaust flow flowing into the mixer housing flows in a transverse direction, and having a first end and a second end; a metering unit arranged at the first end of the metering pipe and connected to a reactant supply for discharging reactant into the metering pipe; and means for generating a swirl flow of the exhaust flow within the metering pipe. The metering pipe has at least one inflow opening extending over a casing surface segment of no less than 45° in the circumferential direction and extending over at least one section of the length of the metering pipe, said inflow opening having a shovel-like hood arranged on the metering pipe and directing the exhaust flow eccentrically into the inflow opening.

    Electrical heating unit
    4.
    发明授权

    公开(公告)号:US11795851B2

    公开(公告)日:2023-10-24

    申请号:US17783084

    申请日:2021-08-20

    摘要: An electrical heating unit H for introduction into the exhaust gas system of an internal combustion engine, in particular upstream with respect to an exhaust gas purification unit, for instance a catalytic converter, which for its operation requires a temperature higher than the ambient temperature, comprises a casing (13) and at least one resistance heating element (14) which is designed as a band and is retained inside the casing (13), wherein the at least one heating band (14) is arranged so that it runs in a meandering pattern and with its flat face parallel or substantially parallel to the longitudinal axis of the casing (13). The heating unit H also comprises at least one support structure (19, 19.1) which is arranged on the end face relative to the heating band (14) and mechanically connected to the casing (13) and has slot-shaped heating band bearings (27) to retain the heating band (14) inside the casing (13), into which slot-shaped heating band bearings (27) the heating band (14) engages by an edge portion and via which support structure (19) the heating band (14) is electrically insulated from the casing (13).

    Device To Convey A Checmical Reactant Into The Exhaust Gas Stream Of A Combustion Engine

    公开(公告)号:US20220090530A1

    公开(公告)日:2022-03-24

    申请号:US17420512

    申请日:2020-01-14

    IPC分类号: F01N3/28 F01N3/20 F01N3/035

    摘要: A device for supplying a chemical reactant into the exhaust system of an internal combustion engine, comprising: a mixer housing having an inlet opening through which the exhaust flow enters the mixer housing; a metering pipe passing through the mixer housing, towards which the exhaust flow flowing into the mixer housing flows in a transverse direction, and having a first end and a second end; a metering unit which is arranged at the first end of the metering pipe and can be connected to a reactant supply for discharging reactant into the metering pipe; and means for generating a swirl flow of the exhaust flow within the metering pipe. For this purpose, the metering pipe has at least one inflow opening extending over a casing surface segment of no less than 45° in the circumferential direction and extending over at least one section of the length of the metering tube located within the mixer housing, said in-flow opening having a shovel-like hood arranged on the metering pipe and directing the exhaust flow eccentrically into the in-flow opening.

    Electrical Heating Unit
    8.
    发明申请

    公开(公告)号:US20230129655A1

    公开(公告)日:2023-04-27

    申请号:US17783084

    申请日:2021-08-20

    IPC分类号: F01N3/20 H05B3/32

    摘要: An electrical heating unit H for introduction into the exhaust gas system of an internal combustion engine, in particular upstream with respect to an exhaust gas purification unit, for instance a catalytic converter, which for its operation requires a temperature higher than the ambient temperature, comprises a casing (13) and at least one resistance heating element (14) which is designed as a band and is retained inside the casing (13), wherein the at least one heating band (14) is arranged so that it runs in a meandering pattern and with its flat face parallel or substantially parallel to the longitudinal axis of the casing (13). The heating unit H also comprises at least one support structure (19, 19.1) which is arranged on the end face relative to the heating band (14) and mechanically connected to the casing (13) and has slot-shaped heating band bearings (27) to retain the heating band (14) inside the casing (13), into which slot-shaped heating band bearings (27) the heating band (14) engages by an edge portion and via which support structure (19) the heating band (14) is electrically insulated from the casing (13).

    Particulate Filter Designed as a Partial Filter
    9.
    发明申请
    Particulate Filter Designed as a Partial Filter 审中-公开
    颗粒过滤器设计为部分过滤器

    公开(公告)号:US20150132193A1

    公开(公告)日:2015-05-14

    申请号:US14398711

    申请日:2013-03-11

    摘要: The invention relates to a particulate filter (1) designed as a partial filter, particularly as a soot particulate filter for removing soot particles from the exhaust gas flow of an internal combustion engine, said filter comprising a filter block unit (3) that is held in a filter housing (2), is designed as a channel filter and comprises a plurality of parallel channels (6, 6.1) which are separated from one another by filter walls (7). The filter block unit (3) comprises at least two filter blocks (5, 5.1) connected one behind the other in the direction of the exhaust gas flow. Each filter block (5, 5.1) is designed as a partial filter, with a first plurality of the channels of each filter block (5, 5.1) being open on the outflow side, and a further plurality thereof being closed on said outflow side.

    摘要翻译: 本发明涉及一种设计为部分过滤器的颗粒过滤器(1),特别是作为用于从内燃机的废气流中除去烟灰颗粒的烟灰颗粒过滤器,所述过滤器包括保持的过滤器块单元(3) 在过滤器壳体(2)中,被设计为通道过滤器,并且包括通过过滤器壁(7)彼此分离的多个平行通道(6,6.1)。 过滤器块单元(3)包括在废气流动方向上一个接一个地连接的至少两个过滤器块(5,51)。 每个过滤器块(5,5.1)被设计为部分过滤器,每个过滤器块(5,5.1)的第一多个通道在流出侧打开,并且其余多个在所述流出侧关闭。