利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

137 条记录 (耗时 0.033 秒)

    Exhaust gas control apparatus for internal combustion engine
    22.
    发明申请
    Exhaust gas control apparatus for internal combustion engine 有权
    内燃机排气控制装置

    公开(公告)号：US20070089405A1

    公开(公告)日：2007-04-26

    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，以及能够检测已经通过的废气中的SO x和H 2 S的总浓度的硫浓度传感器 NOx催化剂和废气中的SO x浓度。 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 gas purification apparatus for internal combustion engine
    28.
    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 PURIFICATION SYSTEM OF INTERNAL COMBUSTION ENGINE
    29.
    发明申请
    EXHAUST PURIFICATION SYSTEM OF INTERNAL COMBUSTION ENGINE 有权
    内燃机排气净化系统

    公开(公告)号：US20130121885A1

    公开(公告)日：2013-05-16

    申请号：US13257789

    申请日：2010-07-28

    申请人： Hiromasa Nishioka ,  Kohei Yoshida ,  Yoshihisa Tsukamoto ,  Yuki Bisaiji ,  Junichi Matsuo ,  Takamitsu Asanuma

    发明人： Hiromasa Nishioka ,  Kohei Yoshida ,  Yoshihisa Tsukamoto ,  Yuki Bisaiji ,  Junichi Matsuo ,  Takamitsu Asanuma

    IPC分类号： B01D53/94

    CPC分类号： B01D53/9422 ,  B01D53/9409 ,  B01D2251/208 ,  B01D2255/102 ,  B01D2255/9022 ,  B01D2255/91 ,  B01D2255/912 ,  B01D2258/012 ,  F01N3/0814 ,  F01N3/0842 ,  F01N3/28 ,  F01N2240/30 ,  F01N2430/06 ,  F01N2510/0684

    摘要： In an internal combustion engine, inside of an engine exhaust passage, a hydrocarbon feed valve (15) and an exhaust treatment catalyst (13) are arranged. On a substrate (45) of the exhaust treatment catalyst (13), a coat layer comprised of at least two layers of a top coat layer (46) and a bottom coat layer (47) is formed. The top coat layer (46) is comprised of an exhaust purification catalyst for reacting NOx contained in exhaust gas and reformed hydrocarbons, while the bottom coat layer (47) is comprised of an NOx absorption catalyst. The concentration of hydrocarbons which flows into the exhaust treatment catalyst (13) is made to vibrate within a predetermined range of amplitude and within a predetermined range of period. Due to this, NOx contained in exhaust gas and NOx desorbed from the NOx absorption catalyst (47) are reduced in the exhaust purification catalyst (46).

    摘要翻译： 在内燃机中，配置发动机排气通路内部的烃供给阀（15）和排气处理催化剂（13）。 在排气处理催化剂（13）的基板（45）上形成由至少两层顶涂层（46）和底涂层（47）构成的涂层。 顶涂层（46）由用于使废气中所含的NOx和重整烃反应的排气净化催化剂构成，而底涂层（47）由NOx吸收催化剂构成。 使流入排气处理催化剂（13）的烃的浓度在预定的振幅范围内振动并且在预定的周期范围内。 由此，在排气净化催化剂（46）中减少了废气中所含的NOx和从NOx吸收催化剂（47）脱附的NOx。

    Exhaust purification system of internal combustion engine
    30.
    发明授权
    Exhaust purification system of internal combustion engine 有权
    内燃机排气净化系统

    公开(公告)号：US08434297B2

    公开(公告)日：2013-05-07

    申请号：US12673888

    申请日：2009-06-15

    申请人： Takamitsu Asanuma ,  Kohei Yoshida ,  Hiromasa Nishioka ,  Daichi Imai ,  Kazuhiro Umemoto

    发明人： Takamitsu Asanuma ,  Kohei Yoshida ,  Hiromasa Nishioka ,  Daichi Imai ,  Kazuhiro Umemoto

    IPC分类号： F01N3/10 ,  F01N3/20

    CPC分类号： F01N3/0871 ,  B01D53/9409 ,  B01D2251/208 ,  B01D2255/91 ,  B01D2257/402 ,  B01D2257/404 ,  B01D2258/012 ,  F01N3/0828 ,  F01N3/36 ,  F01N2570/145 ,  F01N2610/03 ,  Y02A50/2344 ,  Y02C20/10 ,  Y02T10/20

    摘要： An electronic control unit executing an algorithm so as to operate an exhaust purification system of an engine. The algorithm (1) commences a regeneration treatment by causing an amount of fuel supplied to a combustion process of the engine to increase so as to change an air-fuel ratio of exhaust gas of the engine from a first lean air-fuel ratio to a set rich air-fuel ratio and (2) causes uncombusted fuel to be supplied to a NOx catalyst device during at least one of: a first period in which an air-fuel ratio of the exhaust gas within the NOx catalyst device changes from the first lean air-fuel ratio to the set rich air-fuel ratio when the regeneration treatment is started; and a second period after an air-fuel ratio of the exhaust gas within the NOx catalyst device becomes a ratio indicating completion of the regeneration treatment.

    摘要翻译： 一种执行算法以操作发动机的排气净化系统的电子控制单元。 算法（1）通过使供给到发动机的燃烧过程的燃料量增加而开始再生处理，以将发动机的排气的空燃比从第一稀空燃比改变为 设定浓空燃比，（2）在NOx催化剂装置中的排气的空燃比从第一时间变化的第一期间中的至少一个期间使未燃燃料供给到NOx催化剂装置 当再生处理开始时，稀空燃比与设定的浓空燃比; 并且在NOx催化剂装置内的排​​气的空燃比成为表示再生处理完成的比例的第二期间。