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    Method, apparatus, and system to control selective catalytic reduction (SCR) catalyst ammonia slip during high temperature transitions
    5.
    发明授权
    Method, apparatus, and system to control selective catalytic reduction (SCR) catalyst ammonia slip during high temperature transitions 有权
    在高温过渡期间控制选择性催化还原（SCR）催化剂氨滑移的方法，装置和系统

    公开(公告)号：US09097163B2

    公开(公告)日：2015-08-04

    申请号：US13837492

    申请日：2013-03-15

    申请人： Corning Incorporated

    发明人： Sam George ,  Achim Karl-Erich Heibel

    IPC分类号： F01N3/00 ,  F01N3/02 ,  F01N3/10 ,  F01N3/20 ,  F01N9/00

    CPC分类号： F01N3/208 ,  F01N9/00 ,  F01N2430/00 ,  F01N2610/02 ,  F01N2900/08 ,  F01N2900/1616 ,  F01N2900/1812 ,  Y02T10/24 ,  Y02T10/47

    摘要： Method, apparatus, and system to control ammonia slip in a selective catalytic reduction (SCR) system. The method includes detecting an engine operation transition event, increasing NOx to the SCR catalyst, and decreasing a reductant dose. The system includes a controller to receive an engine transition signal, anticipate a temperature transition at the SCR catalyst in response to the engine transition signal, and cause a NOx increase in the exhaust gas stream to the SCR catalyst and a decrease of reductant to the SCR catalyst coinciding with the temperature transition at the SCR catalyst. The apparatus includes a NOx increase module to cause the NOx increase in the exhaust gas stream to the SCR catalyst in response to the engine transition signal. The apparatus also includes a reductant shut-off module configured to cause the reductant addition to the exhaust gas stream to turn off in response to the engine transition signal.

    摘要翻译： 用于控制选择性催化还原（SCR）系统中氨滑移的方法，装置和系统。 该方法包括检测发动机操作转变事件，增加SCR至SCR催化剂的NOx，并减少还原剂剂量。 该系统包括控制器，用于接收发动机转换信号，预测响应于发动机转换信号的SCR催化剂的温度转变，并引起排放气体向SCR催化剂的NOx增加以及对SCR的还原剂的减少 催化剂与SCR催化剂的温度转变一致。 该装置包括NOx增加模块，以响应于发动机转换信号而使排气流中的NOx增加到SCR催化剂。 该装置还包括还原剂切断模块，该还原剂切断模块被配置成响应于发动机转换信号而使排气流中的还原剂加入而关闭。

    CERAMIC PARTIAL WALL-FLOW FILTER WITH LOW DEEP BED
    6.
    发明申请
    CERAMIC PARTIAL WALL-FLOW FILTER WITH LOW DEEP BED 审中-公开
    陶瓷部分壁流过滤器与低深度床

    公开(公告)号：US20140238242A1

    公开(公告)日：2014-08-28

    申请号：US14108444

    申请日：2013-12-17

    申请人： Corning Incorporated

    发明人： Suhao He ,  Achim Karl-Erich Heibel

    IPC分类号： F01N3/022 ,  B01D46/24

    CPC分类号： F01N3/0222 ,  B01D46/2459 ,  F01N3/031 ,  F01N2410/08 ,  Y02T10/20

    摘要： A partial wall-flow filter, having a honeycomb structure including an inlet end, an outlet end, and parallel channels disposed and configured to flow fluid from the inlet end to the outlet end. The channels are defined by a plurality of intersecting porous walls. The partial wall-flow filter has a filtration region of channels plugged at the outlet end and a bypass region of unplugged channels. An N/S ratio of the filter material is less than or equal to about 0.5, less than or equal to about 0.3, less than or equal to about 0.1, or even 0, where N is a pressure drop difference induced by deep bed soot and S is a pressure drop change from 0 grams per liter (g/l) to about 5 g/l for a conditioned curve induced by cake bed soot, where N and S are measured on a full wall-flow filter of the filter material.

    摘要翻译： 一种部分壁流式过滤器，其具有蜂窝结构，该蜂窝结构包括入口端，出口端和平行通道，该通道设置并构造成使流体从入口端流到出口端。 通道由多个相交的多孔壁限定。 部分壁流过滤器具有在出口端堵塞的通道的过滤区域和未插入通道的旁路区域。 过滤材料的N / S比小于或等于约0.5，小于或等于约0.3，小于或等于约0.1，甚至0，其中N是由深床烟灰引起的压差差 并且S是由饼床烟灰诱导的调节曲线从0克/升（g / l）至约5g / l的压降变化，其中在过滤材料的全壁流过滤器上测量N和S 。