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    Catalyst degradation detecting device and method thereof in internal combustion engine
    73.
    发明授权
    Catalyst degradation detecting device and method thereof in internal combustion engine 失效
    催化降解检测装置及其在内燃机中的应用

    公开(公告)号：US06797517B1

    公开(公告)日：2004-09-28

    申请号：US09561003

    申请日：2000-04-28

    Applicant: Koichi Hoshi ,  Kazuhiro Sakurai ,  Takashi Watanabe

    Inventor： Koichi Hoshi ,  Kazuhiro Sakurai ,  Takashi Watanabe

    IPC: G01N3110

    CPC classification number: F02D41/1441 ,  F01N3/0807 ,  F01N3/0835 ,  F01N3/101 ,  F01N11/002 ,  F01N11/007 ,  F01N13/009 ,  F01N13/0093 ,  F01N2250/12 ,  F01N2370/24 ,  F01N2390/02 ,  F01N2410/12 ,  F01N2550/02 ,  F01N2550/03 ,  F01N2560/023 ,  F01N2560/025 ,  F01N2560/14 ,  Y02T10/22 ,  Y02T10/47

    Abstract: It is an object of the present invention to contribute to prevention of worsening an exhaust gas emission at the time of cold starting up of an internal combustion engine by providing a technology for accurately determining the degradation of an exhaust gas purifying catalyst provided in an exhaust passage of the internal combustion engine, specifically, the degradation of a low temperature activation capability of the exhaust gas purifying catalyst. In order to achieve this object, the catalyst degradation detecting device of the internal combustion engine of the present invention includes an adsorbent provided in the exhaust passage at downstream of the exhaust gas purifying catalyst, for adsorbing a predetermined component contained in the exhaust gas when a temperature is lower than a predetermined temperature range, and desorbing the adsorbed predetermined component when the temperature is within the predetermined temperature range; an adsorbing amount detector for detecting the amount of the predetermined component adsorbed in the adsorbent; and a catalyst degradation determining device for determining the degradation of the exhaust gas purifying catalyst based on a predetermined component adsorbing amount detected by the adsorbing amount detector.

    Abstract translation: 本发明的目的是通过提供一种用于精确地确定设置在排气通道中的排气净化催化剂的劣化的技术来有助于防止内燃机的冷启动时的废气排放恶化 特别是废气净化催化剂的低温活化能力的劣化。 为了达到这个目的，本发明的内燃机的催化剂劣化检测装置包括在废气净化催化剂的下游设置在排气通路中的吸附剂，用于吸附废气中包含的预定成分 温度低于预定温度范围，并且当温度在预定温度范围内时解吸吸附的预定组分; 用于检测吸附剂中吸附的预定成分的量的吸附量检测器; 以及催化剂劣化测定装置，用于根据由吸附量检测器检测出的规定成分吸附量来求出废气净化用催化剂的劣化。

    Continuous flow, NOx-reduction adsorption unit for internal combustion engines
    74.
    发明授权
    Continuous flow, NOx-reduction adsorption unit for internal combustion engines 失效
    内燃机连续流量，NOx还原吸附装置

    公开(公告)号：US06775973B2

    公开(公告)日：2004-08-17

    申请号：US10309712

    申请日：2002-12-04

    Applicant: Ke Liu ,  Peter F. Foley ,  Eric A. Rohrbach ,  Wayne G. Wnuck

    Inventor： Ke Liu ,  Peter F. Foley ,  Eric A. Rohrbach ,  Wayne G. Wnuck

    IPC: F01N310

    CPC classification number: F01N3/0842 ,  F01N3/0807 ,  F01N3/0871 ,  F01N3/0878 ,  F01N2290/02 ,  F01N2290/06 ,  F01N2610/04 ,  Y02T10/24

    Abstract: Oxides of nitrogen are adsorbed onto the surfaces of gas passages (68) in a bed (57, 100) that has relative rotation with respect to a gas inlet distributor (76, 101). The manifold has a baffle (85) or ribs (121, 122) that causes constantly flowing engine exhaust (53) to enter the gas passages over a large portion of a revolution of the adsorption bed or the distributor, and causes constantly flowing regeneration gas (54) to thereafter pass through those passages during a small portion of each revolution. The passages may be formed by planar (66a) or helical (66b) radial walls (66), a serpentine wall (70), a monolith (126), or a honeycomb (127). Either the distributor (101) or the bed (57) may be rotated to distribute the gases.

    Abstract translation: 氮气的氧化物被吸附在相对于气体入口分配器（76,101）具有相对旋转的床（57,100）中的气体通道（68）的表面上。 歧管具有挡板（85）或肋（121,122），其使得始终流动的发动机排气（53）在吸附床或分配器的大部分旋转中进入气体通道，并且导致恒定流动的再生气体 （54）之后，在每一圈的一小部分期间通过这些通道。 通道可以由平面（66a）或螺旋（66b）径向壁（66），蛇形壁（70），整料（126）或蜂窝（127）形成。 分配器（101）或床（57）可以被旋转以分配气体。

    Exhaust gas cleaner for internal combustion engine
    76.
    发明申请
    Exhaust gas cleaner for internal combustion engine 失效
    内燃机排气净化器

    公开(公告)号：US20040112043A1

    公开(公告)日：2004-06-17

    申请号：US10474727

    申请日：2003-10-14

    Inventor： Shogo Matsubayashi ,  Tohru Nakazono

    IPC: F01N009/00 ,  F01N011/00

    CPC classification number: F01N3/0842 ,  B01D53/346 ,  B01D53/9431 ,  B01D53/9495 ,  F01N3/0807 ,  F01N3/0814 ,  F01N3/30 ,  F01N11/007 ,  F01N13/009 ,  F01N2550/03 ,  F01N2570/16 ,  F02D41/0275 ,  F02D2200/0811 ,  Y02T10/22 ,  Y02T10/47

    Abstract: In an internal combustion engine (100) provided with an NOX absorbing reduction catalyst (2) in an exhaust gas passage (1), there are arranged: an oxygen sensor (3) which is mounted downstream of the NOX absorbing reduction catalyst (2) in the exhaust gas passage (1); and a determination means for determining a condition of degradation of the NOX absorbing reduction catalyst (2) on the basis of a time length, during which a voltage value, having a small amount of variation before the voltage value outputted from the oxygen sensor (3) is recorded as a maximum value when executing a rich spike, is recorded.

    Abstract translation: 在排气通道（1）中设置有NO x吸收还原催化剂（2）的内燃机（100）中，设置有安装在NO x吸收还原催化剂（2）的下游的氧传感器（3） 在废气通道（1）中; 以及确定装置，用于基于时间长度来确定NO x吸收还原催化剂（2）的劣化状况，在该时间长度下，在从氧传感器（3）输出的电压值之前具有小的变化量的电压值 ）被记录为执行丰富尖峰时的最大值。

    CONTINUOUS FLOW, NOX-REDUCTION ADSORPTION UNIT FOR INTERNAL COMBUSTION ENGINES
    77.
    发明申请
    CONTINUOUS FLOW, NOX-REDUCTION ADSORPTION UNIT FOR INTERNAL COMBUSTION ENGINES 失效
    连续流量，内燃机用减压吸附装置

    公开(公告)号：US20040107697A1

    公开(公告)日：2004-06-10

    申请号：US10309712

    申请日：2002-12-04

    Inventor： Ke Liu ,  Peter F. Foley ,  Eric A. Rohrbach ,  Wayne G. Wnuck

    IPC: F01N005/04 ,  F01N003/00 ,  F01N003/10

    CPC classification number: F01N3/0842 ,  F01N3/0807 ,  F01N3/0871 ,  F01N3/0878 ,  F01N2290/02 ,  F01N2290/06 ,  F01N2610/04 ,  Y02T10/24

    Abstract: Oxides of nitrogen are adsorbed onto the surfaces of gas passages (68) in a bed (57, 100) that has relative rotation with respect to a gas inlet distributor (76, 101). The manifold has a baffle (85) or ribs (121, 122) that causes constantly flowing engine exhaust (53) to enter the gas passages over a large portion of a revolution of the adsorption bed or the distributor, and causes constantly flowing regeneration gas (54) to thereafter pass through those passages during a small portion of each revolution. The passages may be formed by planar (66a) or helical (66b) radial walls (66), a serpentine wall (70), a monolith (126), or a honeycomb (127). Either the distributor (101) or the bed (57) may be rotated to distribute the gases.

    Abstract translation: 氮气的氧化物被吸附在相对于气体入口分配器（76,101）具有相对旋转的床（57,100）中的气体通道（68）的表面上。 歧管具有挡板（85）或肋（121,122），其使得始终流动的发动机排气（53）在吸附床或分配器的大部分旋转中进入气体通道，并且导致恒定流动的再生气体 （54）之后，在每一圈的一小部分期间通过这些通道。 通道可以由平面（66a）或螺旋（66b）径向壁（66），蛇形壁（70），整料（126）或蜂窝（127）形成。 分配器（101）或床（57）可以被旋转以分配气体。

    Adsorber aftertreatment system having dual soot filters
    78.
    发明授权
    Adsorber aftertreatment system having dual soot filters 有权
    吸附器后处理系统具有双烟尘过滤器

    公开(公告)号：US06745560B2

    公开(公告)日：2004-06-08

    申请号：US10192969

    申请日：2002-07-11

    Applicant: Bradlee J. Stroia ,  Robert C. Yu ,  Rahul Mital ,  Michael J. Cunningham

    Inventor： Bradlee J. Stroia ,  Robert C. Yu ,  Rahul Mital ,  Michael J. Cunningham

    IPC: F01N300

    CPC classification number: F01N3/0878 ,  B01D53/9431 ,  F01N3/032 ,  F01N3/0807 ,  F01N3/0814 ,  F01N3/0821 ,  F01N3/085 ,  F01N3/0871 ,  F01N13/011 ,  F01N2250/14 ,  F01N2570/04 ,  F01N2570/14 ,  F01N2610/03

    Abstract: Exhaust flow from an internal combustion engine is divided in a predetermined ratio between two adsorber catalysts arranged in parallel during lean operation. A regeneration cycle time is predetermined and regeneration is accomplished by injecting hydrocarbons into a catalyst leg having a reduced exhaust flow. Upon regeneration of the catalyst, the exhaust gas flow distribution is reversed and the opposite catalyst is regenerated while the regenerated catalyst bears the brunt of the exhaust flow. The exhaust flow then reverts to a normal (e.g. 50—50) flow distribution until another regeneration cycle is warranted. A catalytic soot filter placed upstream of each adsorber is also regenerated by hydrocarbon injection. The addition of the catalytic soot filter provides more time and surface area for the hydrocarbon to react with the oxygen. Some of the diesel fuel is reformulated into hydrogen and carbon monoxide for superior regeneration.

    Abstract translation: 来自内燃机的排气流在稀薄运转期间平行排列的两个吸附剂催化剂之间以预定比例分配。 再生循环时间是预定的，并且通过将烃注入具有减少的排气流量的催化剂支管中来实现再生。 催化剂再生时，排气流量分布相反，相反的催化剂再生，同时再生催化剂首当其冲。 然后排气流回到正常（例如50-50）的流量分布，直到需要另外一个再生循环。 置于每个吸附器上游的催化烟灰过滤器也通过烃注入再生。 催化烟灰过滤器的添加为烃与氧气反应提供了更多的时间和表面积。 一些柴油被重新配制成氢气和一氧化碳，以获得更好的再生。

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