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    Exhaust gas purification apparatus for internal combustion engine
    71.
    发明授权
    Exhaust gas purification apparatus for internal combustion engine 有权
    内燃机废气净化装置

    公开(公告)号：US09199197B2

    公开(公告)日：2015-12-01

    申请号：US12087509

    申请日：2007-09-06

    申请人： Kohei Yoshida ,  Yasuaki Nakano ,  Tadashi Watanabe ,  Kotaro Hayashi ,  Takamitsu Asanuma

    发明人： Kohei Yoshida ,  Yasuaki Nakano ,  Tadashi Watanabe ,  Kotaro Hayashi ,  Takamitsu Asanuma

    IPC分类号： F01N3/28 ,  B01D53/94 ,  F01N3/08 ,  F01N13/00

    CPC分类号： B01D53/9422 ,  B01D53/9477 ,  B01D2255/1021 ,  B01D2255/1023 ,  F01N3/0807 ,  F01N3/0814 ,  F01N3/0821 ,  F01N13/009 ,  F01N13/0093 ,  Y02C20/10

    摘要： A fuel addition valve that adds fuel into the exhaust gas passage of the engine in the form of fine fuel droplets, an upstream NOx adsorption-reduction catalyst, and a downstream NOx adsorption-reduction catalyst are arranged in this order. Platinum Pt and palladium Pd, as noble metal, are supported on the downstream NOx adsorption-reduction NOx catalyst such that the ratio of the mole number of the platinum Pt to the sum of the mole numbers of the platinum Pt and the palladium Pd is approx. 50% to approx. 80%. Only platinum Pt is supported on the upstream NOx adsorption-reduction catalyst. According to this structure, even when liquid fuel is supplied into exhaust gas, NOx can be effectively released from the NOx adsorption-reduction catalyst, and further the amount of NOx that the NOx adsorption-reduction catalyst can adsorb at a low temperature increases.

    摘要翻译： 按照该顺序排列燃料添加阀，其将燃料添加到发动机的废气通道中，其形式为精细的燃料液滴，上游的NOx吸附还原催化剂和下游的NOx吸附还原催化剂。 作为贵金属的铂Pt和钯Pd负载在下游NOx吸附还原NOx催化剂上，使得铂Pt的摩尔数与铂Pt和钯Pd的摩尔数的和的比率约为 。 50％〜约 80％。 在上游NOx吸附还原催化剂上仅负载铂Pt。 根据该结构，即使向排气供给液体燃料，也可以从NOx吸附还原催化剂中有效地释放NOx，并且进一步降低NOx吸附还原催化剂在低温下吸附的NOx量。

    Exhaust gas purification system for internal combustion engine
    72.
    发明申请
    Exhaust gas purification system for internal combustion engine 有权
    内燃机排气净化系统

    公开(公告)号：US20090151332A1

    公开(公告)日：2009-06-18

    申请号：US12227376

    申请日：2007-07-12

    申请人： Shunsuke Toshioka ,  Takamitsu Asanuma ,  Morio Narita

    发明人： Shunsuke Toshioka ,  Takamitsu Asanuma ,  Morio Narita

    IPC分类号： F01N9/00

    CPC分类号： F02D41/0275 ,  F01N3/0885 ,  F01N3/106 ,  F01N11/00 ,  F01N2550/05 ,  F01N2560/025 ,  F01N2560/026 ,  F01N2560/06 ,  F01N2610/03 ,  F01N2610/1493 ,  F01N2900/0421 ,  F02B37/00 ,  F02D41/1454 ,  Y02T10/20 ,  Y02T10/47

    摘要： The task for the present invention is to reduce more of an oxide that is stored in a NOx storage reduction catalyst, even in a case where a clogging has occurred in a reducing agent adding valve that is provided in an exhaust passage of an internal combustion engine. The present invention is provided with rich spike control performing means that, when an oxide that is stored in the NOx storage reduction catalyst is reduced, performs a rich spike control and that, when lowering the air-fuel ratio in the exhaust gas, performs addition of a reducing agent by the reducing agent adding valve multiple times, which is performed when a crank angle of the internal combustion engine is in a specified range. When the clogging has occurred in the reducing agent adding valve, the number of times the air-fuel ratio in the exhaust gas is lowered while the rich spike control is being performed by the rich spike control performing means is increased.

    摘要翻译： 本发明的任务是减少存储在NOx储存还原催化剂中的氧化物，即使在设置在内燃机的排气通道中的还原剂添加阀中发生堵塞的情况下 。 本发明提供了丰富的尖峰控制执行装置，当减少存储在NOx存储还原催化剂中的氧化物时，执行浓穗控制，并且当降低排气中的空燃比时，进行附加 通过还原剂添加阀多次的还原剂，其在内燃机的曲柄角处于规定范围内时进行。 当还原剂添加阀发生堵塞时，增加了由富穗控制执行装置进行富穗控制时排气中的空燃比降低的次数。

    Exhaust gas control apparatus for internal combustion engine
    74.
    发明授权
    Exhaust gas control apparatus for internal combustion engine 有权
    内燃机排气控制装置

    公开(公告)号：US07509801B2

    公开(公告)日：2009-03-31

    申请号：US10560733

    申请日：2005-06-06

    申请人： Takamitsu Asanuma

    发明人： Takamitsu Asanuma

    IPC分类号： F01N3/00

    CPC分类号： F01N3/0885 ,  F01N3/0842 ,  F01N11/00 ,  F01N2550/03 ,  F01N2560/027 ,  F01N2570/04 ,  Y02T10/47

    摘要： There are provided a NOx storage reduction catalyst which is provided in an exhaust passage for an engine, and a sulfur concentration sensor which can detect a total concentration of SOx and H2S in exhaust gas that has passed through the NOx catalyst, and a concentration of SOx in the exhaust gas. An operating state of the engine is controlled such that SOx is released from the NOx catalyst (sulfur poisoning recovery process). When a concentration of the hydrogen sulfide obtained based on the total concentration and the concentration of SOx that are detected by the sulfur concentration sensor during the sulfur poisoning recovery process exceeds a permissible limit, an operating state of the engine is controlled such that the sulfur oxide is released from the NOx catalyst, an amount of the released sulfur oxide is in a predetermined range, and the concentration of the hydrogen sulfide is reduced.

    摘要翻译： 提供了一种设置在用于发动机的排气通道中的NOx储存还原催化剂，以及能够检测通过NOx催化剂的废气中的SO x和H 2 S的总浓度的硫浓度传感器，以及SO x的浓度 在废气中。 控制发动机的运转状态使得SO x从NOx催化剂中释放出来（硫中毒恢复过程）。 当在硫中毒恢复过程中基于硫浓度传感器检测到的总浓度和SO x浓度获得的硫化氢浓度超过许可极限时，控制发动机的运行状态，使得硫氧化物 从NOx催化剂释放，释放的硫氧化物的量处于预定范围内，并且硫化氢的浓度降低。

    Exhaust Purification System of Internal Combustion Engine
    75.
    发明申请
    Exhaust Purification System of Internal Combustion Engine 审中-公开
    内燃机排气净化系统

    公开(公告)号：US20090049826A1

    公开(公告)日：2009-02-26

    申请号：US12083873

    申请日：2007-05-24

    申请人： Shunsuke Toshioka ,  Shinya Hirota ,  Takamitsu Asanuma

    发明人： Shunsuke Toshioka ,  Shinya Hirota ,  Takamitsu Asanuma

    IPC分类号： F01N3/08

    CPC分类号： F01N3/0871 ,  F01N3/0821 ,  F01N3/0842 ,  F01N11/00 ,  F01N13/0097 ,  F01N2550/05 ,  F01N2560/025 ,  F01N2560/026 ,  F01N2560/06 ,  F01N2610/03 ,  F01N2610/146 ,  Y02T10/47

    摘要： An NOx adsorbent is arranged in an exhaust passage of an internal combustion engine, a fuel addition valve (28) is arranged in the exhaust passage upstream of the NOx adsorbent, and, when the NOx adsorbent should be made to release the NOx, the fuel addition valve (28) adds fuel to the NOx adsorbent in the required fuel addition amount to make the air-fuel ratio of the exhaust gas flowing into the NOx adsorbent temporarily rich. In this case, the required fuel addition amount is added divided into a plurality of operations. The fuel addition rate of the fuel addition valve (28) is detected and the overall addition time from the start of the initial divided addition to the end of the final divided addition is corrected in accordance with the fuel addition rate. Further, the divided addition time, interval, or number of divided additions is corrected so that the amount of fuel actually added from the fuel addition valve (28) is maintained at the required fuel addition amount.

    摘要翻译： NOx吸附剂配置在内燃机的排气通路中，燃料添加阀（28）配置在NOx吸附剂上游侧的排气通路中，在使NOx吸附剂排出NOx时， 添加阀（28）以所需的燃料添加量向NOx吸附剂添加燃料，以使流入NOx吸附剂的废气的空燃比暂时变浓。 在这种情况下，所需的燃料添加量被分成多个操作。 检测燃料添加阀（28）的燃料添加率，并且根据燃料添加率校正从初始分配添加开始到最终分配加法的结束的总添加时间。 此外，分配的加法时间，间隔或分开的加法次数被校正，使得从燃料添加阀（28）实际添加的燃料量保持在所需的燃料添加量。

    Device for Purifying Exhaust Gas of an Internal Combustion Engine
    76.
    发明申请
    Device for Purifying Exhaust Gas of an Internal Combustion Engine 有权
    净化内燃机废气的装置

    公开(公告)号：US20080314025A1

    公开(公告)日：2008-12-25

    申请号：US11885153

    申请日：2006-10-04

    申请人： Shunsuke Toshioka ,  Takamitsu Asanuma

    发明人： Shunsuke Toshioka ,  Takamitsu Asanuma

    IPC分类号： F01N9/00

    CPC分类号： B01D53/9431 ,  B01D53/9495 ,  B01D2255/91 ,  F01N3/0814 ,  F01N3/0842 ,  F01N3/0871 ,  F01N9/00 ,  F01N2550/03 ,  F01N2560/026 ,  F01N2570/14 ,  F01N2610/03 ,  F01N2610/146 ,  Y02A50/2344 ,  Y02T10/47

    摘要： A device for purifying exhaust gas of an internal combustion engine comprising a NOx catalyst device, fuel feeding means for feeding additional fuel into combusted gas flowing into the NOx catalyst device during the regeneration treatment, and a NOx concentration sensor arranged on the exhaust downstream of the NOx catalyst device, wherein when the NOx concentration detected by the NOx concentration sensor is lower than a preset concentration during the regeneration treatment of this time, the amount of NOx absorbed by the NOx catalyst device during a preset period until the regeneration treatment of the next time is estimated by utilizing the NOx concentration sensor, and when the absorbed amount of NOx is smaller than a preset amount, it is decided that the amount of additional fuel fed during the regeneration processing of this time had been abnormally decreased.

    摘要翻译： 一种用于净化内燃机废气的装置，包括NOx催化装置，用于在再生处理期间将附加燃料供给到流入NOx催化剂装置的燃烧气体中的燃料供给装置，以及配置在排气下游的排气口的NOx浓度传感器 NO x催化剂装置，其中，当在该再生处理期间，由NOx浓度传感器检测到的NOx浓度低于预先设定的浓度时，由NOx催化剂装置吸收的NOx的量在下一次的再生处理之前的预设期间内 通过利用NOx浓度传感器来估计时间，并且当NOx的吸收量小于预设量时，判定在该时间的再生处理中供给的附加燃料量已经异常地降低。

    Exhaust gas control apparatus for internal combustion engine
    78.
    发明申请
    Exhaust gas control apparatus for internal combustion engine 有权

    公开(公告)号：US20060230749A1

    公开(公告)日：2006-10-19

    申请号：US10562900

    申请日：2005-06-09

    申请人： Takamitsu Asanuma

    发明人： Takamitsu Asanuma

    IPC分类号： F01N3/00 ,  F01N3/10

    CPC分类号： F01N3/0885 ,  F01N3/0842 ,  F01N11/00 ,  F01N2550/03 ,  F01N2570/04 ,  F01N2900/0422 ,  Y02T10/47

    摘要： There are provided a NOx storage reduction catalyst which is provided in an exhaust passage for an internal combustion engine, and concentration detection means whose detection state can be changed between a first detection state in which a total concentration of sulfur oxide and hydrogen sulfide in exhaust gas that has passed through the NOx catalyst is detected, and a second detection state in which a concentration of the sulfur oxide in the exhaust gas is detected. An operating state of the internal combustion engine is controlled such that the sulfur oxide is released from the NOx catalyst (sulfur poisoning recovery process). The detection state of the concentration detection means is alternately changed between the first detection state and the second detection state after the concentration detection means which is caused to remain in the second detection state detects release of the sulfur oxide from the NOx catalyst during the sulfur poisoning recovery process, whereby the concentration of the sulfur oxide and a concentration of the hydrogen sulfide are obtained.

    Exhaust emission purification apparatus of compression ignition type internal combustion engine
    79.
    发明申请
    Exhaust emission purification apparatus of compression ignition type internal combustion engine 有权
    压燃式内燃机排气净化装置

    公开(公告)号：US20060053778A1

    公开(公告)日：2006-03-16

    申请号：US10542595

    申请日：2004-11-29

    申请人： Takamitsu Asanuma ,  Shinya Hirota ,  Tomihisa Oda

    发明人： Takamitsu Asanuma ,  Shinya Hirota ,  Tomihisa Oda

    IPC分类号： F01N3/00 ,  F01N3/10

    CPC分类号： F01N3/0814 ,  F01N3/0835 ,  F01N3/0842 ,  F01N13/009 ,  F01N2610/03 ,  F02B29/0406 ,  F02B37/00 ,  F02M26/05 ,  F02M26/28

    摘要： A fuel adding valve (14), an HC adsorbing and oxidation catalyst (11), and a NOx storing catalyst (12) are successively arranged in an exhaust passage of an internal combustion engine toward the downstream side. When the NOx storing catalyst (12) should release NOx, particulate fuel is added from the fuel adding valve (14). This fuel is adsorbed once at the HC adsorbing and oxidation catalyst (11), then gradually evaporates to make the air-fuel ratio of the exhaust gas flowing into the NOx storing catalyst (12) rich. Due to this, NOx is released from the NOx storing catalyst (12).

    摘要翻译： 燃料添加阀（14），HC吸附和氧化催化剂（11）以及NO x存储催化剂（12）依次排列在内燃机的排气通道中，朝向下游侧 。 当NO x X存储催化剂（12）释放NO x时，从燃料添加阀（14）中加入微粒燃料。 该燃料在HC吸附和氧化催化剂（11）上被吸附一次，然后逐渐蒸发，使得流入NO 2 x储存催化剂（12）的废气的空燃比变浓。 由此，NO NO x x从NO x存储催化剂（12）释放。