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    ABNORMALITY DIAGNOSIS APPARATUS FOR EXHAUST GAS PURIFICATION APPARATUS
    74.
    发明申请
    ABNORMALITY DIAGNOSIS APPARATUS FOR EXHAUST GAS PURIFICATION APPARATUS 有权
    异常气体净化装置异常诊断装置

    公开(公告)号：US20150337707A1

    公开(公告)日：2015-11-26

    申请号：US14718374

    申请日：2015-05-21

    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA ,  KABUSHIKI KAISHA TOYOTA JIDOSHOKKI

    Inventor： Yoshitaka NAKAMURA ,  Satoshi ENDO

    IPC: F01N3/20 ,  F01N11/00 ,  F01N3/08

    CPC classification number: F01N3/0842 ,  F01N3/0828 ,  F01N3/2066 ,  F01N3/208 ,  F01N9/00 ,  F01N11/00 ,  F01N13/009 ,  F01N2550/00 ,  F01N2550/02 ,  F01N2550/05 ,  F01N2560/026 ,  F01N2560/06 ,  F01N2560/07 ,  F01N2570/18 ,  F01N2610/02 ,  F01N2610/146 ,  F01N2900/0601 ,  F01N2900/08 ,  F01N2900/1402 ,  F01N2900/1602 ,  F01N2900/1616 ,  F01N2900/1621 ,  F01N2900/1622 ,  Y02T10/24 ,  Y02T10/47

    Abstract: The present invention provides an abnormality diagnosis apparatus for an exhaust gas purification apparatus having an SCR catalyst, with which a misdiagnosis of an abnormality in the SCR catalyst even though the SCR catalyst is normal can be suppressed. In the present invention, a NOx purification ratio is determined using an estimated NOx inflow amount as a parameter, and an abnormality in the SCR catalyst is diagnosed on the basis of the NOx purification ratio. According to the present invention, a minimum NH3 adsorption amount is determined as an NH3 adsorption amount of the SCR catalyst in a condition where an actual NOx inflow amount reaches a maximum. When the minimum NH3 adsorption amount equals or exceeds a predetermined amount, a determination is made as to whether or not a NOx purification ability of the SCR catalyst has deteriorated from a normal condition by comparing the NOx purification ratio with a first threshold. When the minimum NH3 adsorption amount is smaller than the predetermined amount, a determination is made as to whether or not the NOx purification ability of the SCR catalyst has been completely lost by comparing the NOx purification ratio with a second threshold that is smaller than the first threshold.

    Abstract translation: 本发明提供一种具有SCR催化剂的排气净化装置的异常诊断装置，即使SCR催化剂正常也能够对SCR催化剂的异常进行误诊。 在本发明中，使用估计的NOx流入量作为参数来确定NOx净化率，并且基于NOx净化率来诊断SCR催化剂的异常。 根据本发明，在实际NOx流入量达到最大的条件下，将最小NH 3吸附量确定为SCR催化剂的NH 3吸附量。 当最小NH 3吸附量等于或超过预定量时，通过将NOx净化率与第一阈值进行比较，确定SCR催化剂的NOx净化能力是否从正常状态劣化。 当最小NH 3吸附量小于预定量时，通过将NOx净化率与小于第一氮气的第二阈值进行比较，确定SCR催化剂的NOx净化能力是否已经完全消失 阈。

    Exhaust purification system of internal combustion engine
    76.
    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

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

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

    IPC: F01N3/10 ,  F01N3/20

    CPC classification number: 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

    Abstract: 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.

    Abstract translation: 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。

    Method and device for determining an oxygen storage capacity of a catalytic converter of an internal combustion engine and method and device for determining a dynamic time duration for exhaust probes of an internal combustion engine
    78.
    发明授权
    Method and device for determining an oxygen storage capacity of a catalytic converter of an internal combustion engine and method and device for determining a dynamic time duration for exhaust probes of an internal combustion engine 有权
    用于确定内燃机的催化转化器的储氧能力的方法和装置，以及用于确定内燃机排气探针的动态持续时间的方法和装置

    公开(公告)号：US07997064B2

    公开(公告)日：2011-08-16

    申请号：US11921380

    申请日：2006-05-10

    Applicant: Tino Arlt ,  Gerd Rösel

    Inventor： Tino Arlt ,  Gerd Rösel

    IPC: F01N3/00

    CPC classification number: F02D41/1454 ,  F01N3/0807 ,  F01N3/0828 ,  F01N11/00 ,  F01N11/007 ,  F01N13/009 ,  F01N2560/02 ,  F02D41/0295 ,  F02D2200/0814 ,  F02D2200/0816 ,  Y02T10/20 ,  Y02T10/47

    Abstract: An exhaust gas catalytic converter is laden with oxygen until it is saturated at least upstream of an exhaust gas probe. A predefined first rich air/fuel ration is set in a combustion chamber of a cylinder. A first oxygen storage capacity value is determined as a function of the measurement signal of an exhaust gas probe and the predefined first rich air/fuel ratio. The exhaust gas catalytic converter is laden with oxygen until it is saturated. A predefined second rich air/fuel ration is set in the combustion chamber of the cylinder. A second oxygen storage capacity value is determined as a function of the measurement signal of the exhaust gas probe and the predefined second rich air/fuel ration. A corrected oxygen storage capacity value is determined as a function of the first and second oxygen storage capacity values.

    Abstract translation: 废气催化转化器充满氧气，直到其至少在排气探针的上游饱和。 在气缸的燃烧室中设置预定义的第一浓空气/燃料比。 根据排气探头的测量信号和预先确定的第一浓空气/燃料比确定第一储氧容量值。 废气催化转化器充满氧气直至饱和。 预定义的第二浓空气/燃料比设置在气缸的燃烧室中。 根据排气探针的测量信号和预定义的第二浓空气/燃料比来确定第二储氧容量值。 作为第一和第二储氧容量值的函数确定校正的储氧容量值。

    Method and apparatus for emissions trap regeneration
    80.
    发明申请
    Method and apparatus for emissions trap regeneration 审中-公开
    排放物捕集器再生的方法和装置

    公开(公告)号：US20070095053A1

    公开(公告)日：2007-05-03

    申请号：US11262669

    申请日：2005-10-31

    Applicant: Samuel Crane ,  Navin Khadiya

    Inventor： Samuel Crane ,  Navin Khadiya

    IPC: F01N3/00

    CPC classification number: F01N3/0871 ,  F01N3/0828 ,  F01N3/0842 ,  F01N3/085 ,  F01N3/0878 ,  F01N13/011 ,  F01N2240/30 ,  F02D41/0035 ,  F02D41/027 ,  F02D41/0275

    Abstract: An apparatus comprises an emissions trap and a trap regenerator fluidly coupled to the emissions trap to advance a regenerative agent thereto to regenerate the emissions trap. The trap regenerator is configured to change a concentration of the regenerative agent advanced to the emissions trap from a first trap-regenerating level to a second trap-regenerating level different from the first trap-regenerating level. An associated method is disclosed.

    Abstract translation: 一种装置包括排放物捕集器和流体耦合到排放阱的捕集器再生器，以将再生剂推进到其中以再生排放阱。 陷阱再生器被配置为将先进到排放阱的再生剂的浓度从第一捕集器再生水平改变到与第一捕集器再生水平不同的第二捕集器再生水平。 公开了一种相关联的方法。

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