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    Abnormality detection system and abnormality detection method for internal combustion engine
    1.
    发明授权
    Abnormality detection system and abnormality detection method for internal combustion engine 有权
    内燃机异常检测系统及异常检测方法

    公开(公告)号：US08171723B2

    公开(公告)日：2012-05-08

    申请号：US12674445

    申请日：2008-12-04

    申请人： Taiga Hagimoto ,  Hiroshi Sawada ,  Daisuke Shibata

    发明人： Taiga Hagimoto ,  Hiroshi Sawada ,  Daisuke Shibata

    IPC分类号： F01N11/00 ,  F01N3/20

    CPC分类号： F01N3/2066 ,  F01N11/00 ,  F01N2550/02 ,  F01N2550/03 ,  F01N2550/05 ,  F01N2560/026 ,  F01N2560/06 ,  F01N2570/14 ,  F01N2610/02 ,  Y02A50/2344 ,  Y02T10/24 ,  Y02T10/47

    摘要： When the NOx SCR catalyst (15) deteriorates, the NOx removal efficiency increases with an increase in the catalyst temperature as indicated by the curves B1 and B2. When there is an irregularity in the amount or quality of aqueous urea solution that is supplied to the NOx SCR catalyst, the NOx removal efficiency decreases at a constant rate as indicated by the curve C. When the NOx removal efficiency is first within the region X2 and then brought into the region Y1, it is determined that the NOx SCR catalyst deteriorates. When the NOx removal efficiency is first within the region X2 and then brought into the region Y2, it is determined that there is an irregularity in the amount or quality of the aqueous urea solution that is supplied to the NOx SCR catalyst.

    摘要翻译： 当NOx SCR催化剂（15）劣化时，如由曲线B1和B2所示，NOx去除效率随着催化剂温度的升高而增加。 当供给到NOx SCR催化剂的尿素水溶液的量或质量不均匀时，NOx去除效率以曲线C所示的恒定速率降低。当NOx去除效率首先在区域X2内时 然后进入区域Y1，确定NOx SCR催化剂劣化。 当NOx去除效率首先在区域X2内并且然后进入区域Y2时，确定供应到NOx SCR催化剂的尿素水溶液的量或质量存在不规则性。

    FILTER FAILURE DETECTION APPARATUS OF AN INTERNAL COMBUSTION ENGINE
    2.
    发明申请
    FILTER FAILURE DETECTION APPARATUS OF AN INTERNAL COMBUSTION ENGINE 有权
    内燃机过滤器故障检测装置

    公开(公告)号：US20130192208A1

    公开(公告)日：2013-08-01

    申请号：US13125746

    申请日：2010-10-22

    申请人： Daisuke Shibata ,  Hiroshi Sawada ,  Toru Kidokoro ,  Taiga Hagimoto ,  Kazuya Takaoka

    发明人： Daisuke Shibata ,  Hiroshi Sawada ,  Toru Kidokoro ,  Taiga Hagimoto ,  Kazuya Takaoka

    IPC分类号： F01N3/021

    CPC分类号： F01N3/021 ,  F01N11/00 ,  F01N2550/04 ,  F01N2560/05 ,  F01N2900/0412 ,  F01N2900/0416 ,  F01N2900/0418 ,  F01N2900/0601 ,  F01N2900/08 ,  F01N2900/1411 ,  Y02T10/20 ,  Y02T10/47

    摘要： A failure of a filter is detected with a higher degree of accuracy. There are provided a filter that is arranged on an exhaust passage of an internal combustion engine for collecting a substance contained in an exhaust gas, a substance amount detection part that is arranged on the exhaust passage at a downstream side of the filter for detecting an amount of substance in the exhaust gas, a flow speed detection part that detects or estimates a flow speed of the exhaust gas which passes through the filter, and a determination part that makes a determination that the filter is in a failure, when the higher the flow speed of the exhaust gas passing through the filter, the larger a ratio of an amount of change in the amount of substance to an amount of change in the flow speed of the exhaust gas becomes.

    摘要翻译： 以更高的准确度检测滤波器的故障。 本发明提供一种过滤器，其设置在内燃机的排气通路上，用于收集废气中所含的物质，物质量检测部，其布置在过滤器的下游侧的排气通道上，用于检测废气量 废气中的物质的流量检测部，检测或估计通过过滤器的排气的流速的流量检测部以及判定为过滤器处于故障的判定部，流量越高 通过过滤器的废气的速度，物质量的变化量与排气的流速变化量的比例越大。

    Filter failure detection apparatus of an internal combustion engine
    5.
    发明授权
    Filter failure detection apparatus of an internal combustion engine 有权
    内燃机的过滤器故障检测装置

    公开(公告)号：US08656700B2

    公开(公告)日：2014-02-25

    申请号：US13125746

    申请日：2010-10-22

    申请人： Daisuke Shibata ,  Hiroshi Sawada ,  Toru Kidokoro ,  Taiga Hagimoto ,  Kazuya Takaoka

    发明人： Daisuke Shibata ,  Hiroshi Sawada ,  Toru Kidokoro ,  Taiga Hagimoto ,  Kazuya Takaoka

    IPC分类号： F01N3/00 ,  F01N3/02

    CPC分类号： F01N3/021 ,  F01N11/00 ,  F01N2550/04 ,  F01N2560/05 ,  F01N2900/0412 ,  F01N2900/0416 ,  F01N2900/0418 ,  F01N2900/0601 ,  F01N2900/08 ,  F01N2900/1411 ,  Y02T10/20 ,  Y02T10/47

    摘要： A failure of a filter is detected with a higher degree of accuracy. There are provided a filter that is arranged on an exhaust passage of an internal combustion engine for collecting a substance contained in an exhaust gas, a substance amount detection part that is arranged on the exhaust passage at a downstream side of the filter for detecting an amount of substance in the exhaust gas, a flow speed detection part that detects or estimates a flow speed of the exhaust gas which passes through the filter, and a determination part that makes a determination that the filter is in a failure, when the higher the flow speed of the exhaust gas passing through the filter, the larger a ratio of an amount of change in the amount of substance to an amount of change in the flow speed of the exhaust gas becomes.

    摘要翻译： 以更高的准确度检测滤波器的故障。 本发明提供一种过滤器，其设置在内燃机的排气通路上，用于收集废气中所含的物质，物质量检测部，其布置在过滤器的下游侧的排气通道上，用于检测废气量 废气中的物质的流量检测部，检测或估计通过过滤器的排气的流速的流量检测部以及判定为过滤器处于故障的判定部，流量越高 通过过滤器的废气的速度，物质量的变化量与排气的流速变化量的比例越大。

    ABNORMALITY DETECTION APPARATUS FOR EXHAUST GAS PURIFICATION APPARATUS AND ABNORMALITY DETECTION METHOD FOR EXHAUST GAS PURIFICATION APPARATUS
    6.
    发明申请
    ABNORMALITY DETECTION APPARATUS FOR EXHAUST GAS PURIFICATION APPARATUS AND ABNORMALITY DETECTION METHOD FOR EXHAUST GAS PURIFICATION APPARATUS 有权
    用于排气净化装置的异常检测装置和排气净化装置的异常检测方法

    公开(公告)号：US20110265461A1

    公开(公告)日：2011-11-03

    申请号：US13121782

    申请日：2009-01-19

    申请人： Daisuke Shibata ,  Satoshi Endo ,  Taiga Hagimoto ,  Hiroshi Sawada

    发明人： Daisuke Shibata ,  Satoshi Endo ,  Taiga Hagimoto ,  Hiroshi Sawada

    IPC分类号： F01N3/00

    CPC分类号： F01N11/00 ,  F01N3/208 ,  F01N2550/05 ,  F01N2560/026 ,  F01N2610/02 ,  F01N2900/1616 ,  F01N2900/1622 ,  Y02T10/24 ,  Y02T10/47

    摘要： It is determined quickly whether there is a shortage in reducing agent supplied to an NOx selective reduction catalyst. After it is determined that a quantity of reducing agent equal to or larger than a predetermined quantity is absorbed in the NOx selective reduction catalyst on the assumption that there is no abnormality in reducing agent supply unit, the supply of a quantity of reducing agent needed to reduce a quantity of NOx flowing into the NOx selective reduction catalyst is started. A determination of an abnormality in the reducing agent supply unit is made based on the NOx removal rate after the lapse of a predetermined period of time since the start of the supply of reducing agent. The NOx removal rate becomes lower when there is an abnormality in the reducing agent supply unit.

    摘要翻译： 快速确定供应给NOx选择还原催化剂的还原剂是否不足。 在假设还原剂供应单元没有异常的情况下，在NOx选择还原催化剂中确定等于或大于预定量的还原剂的量被吸收之后，需要提供一定量的还原剂 开始减少流入NOx选择还原催化剂的NOx的量。 基于从开始供给还原剂开始经过预定时间段之后的NOx去除率，确定还原剂供应单元中的异常。 当还原剂供给单元发生异常时，NOx去除率变低。

    ABNORMALITY DETECTION SYSTEM AND ABNORMALITY DETECTION METHOD FOR INTERNAL COMBUSTION ENGINE
    7.
    发明申请
    ABNORMALITY DETECTION SYSTEM AND ABNORMALITY DETECTION METHOD FOR INTERNAL COMBUSTION ENGINE 有权
    内燃机异常检测系统及异常检测方法

    公开(公告)号：US20110146235A1

    公开(公告)日：2011-06-23

    申请号：US12674445

    申请日：2008-12-04

    申请人： Taiga Hagimoto ,  Hiroshi Sawada ,  Daisuke Shibata

    发明人： Taiga Hagimoto ,  Hiroshi Sawada ,  Daisuke Shibata

    IPC分类号： F01N11/00

    CPC分类号： F01N3/2066 ,  F01N11/00 ,  F01N2550/02 ,  F01N2550/03 ,  F01N2550/05 ,  F01N2560/026 ,  F01N2560/06 ,  F01N2570/14 ,  F01N2610/02 ,  Y02A50/2344 ,  Y02T10/24 ,  Y02T10/47

    摘要： When the NOx SCR catalyst (15) deteriorates, the NOx removal efficiency increases with an increase in the catalyst temperature as indicated by the curves B1 and B2. When there is an irregularity in the amount or quality of aqueous urea solution that is supplied to the NOx SCR catalyst, the NOx removal efficiency decreases at a constant rate as indicated by the curve C. When the NOx removal efficiency is first within the region X2 and then brought into the region Y1, it is determined that the NOx SCR catalyst deteriorates. When the NOx removal efficiency is first within the region X2 and then brought into the region Y2, it is determined that there is an irregularity in the amount or quality of the aqueous urea solution that is supplied to the NOx SCR catalyst.

    摘要翻译： 当NOx SCR催化剂（15）劣化时，如由曲线B1和B2所示，NOx去除效率随着催化剂温度的升高而增加。 当供给到NOx SCR催化剂的尿素水溶液的量或质量不均匀时，NOx去除效率以曲线C所示的恒定速率降低。当NOx去除效率首先在区域X2内时 然后进入区域Y1，确定NOx SCR催化剂劣化。 当NOx去除效率首先在区域X2内并且然后进入区域Y2时，确定供应到NOx SCR催化剂的尿素水溶液的量或质量存在不规则性。

    Catalyst deterioration detection apparatus and catalyst deterioration detection method for internal combustion engine
    9.
    发明授权
    Catalyst deterioration detection apparatus and catalyst deterioration detection method for internal combustion engine 有权
    用于内燃机的催化剂劣化检测装置和催化剂劣化检测方法

    公开(公告)号：US08806928B2

    公开(公告)日：2014-08-19

    申请号：US13695372

    申请日：2010-04-30

    申请人： Daisuke Shibata ,  Hiroshi Sawada ,  Toru Kidokoro ,  Akihiko Itakura

    发明人： Daisuke Shibata ,  Hiroshi Sawada ,  Toru Kidokoro ,  Akihiko Itakura

    IPC分类号： G01M15/10

    CPC分类号： G01M15/10 ,  F01N11/002 ,  F01N2550/02 ,  Y02T10/47

    摘要： Provision is made for a catalyst that is arranged in an exhaust passage of an internal combustion engine and has an oxidation function, downstream side temperature detection means that detects the temperature of an exhaust gas at a downstream side from the catalyst, and addition means that adds a reducing agent into the exhaust gas from an upstream side from the catalyst, wherein there are also provided correlation value calculation means that calculates a correlation value which is correlated with an amount of change of the temperature detected by the downstream side temperature detection means when the reducing agent is added by the addition means and when a transient operation of the internal combustion engine is carried out, and determination means that determines a deterioration of the catalyst by making a comparison between the correlation value and a threshold value which indicates the deterioration of the catalyst.

    摘要翻译： 设置有布置在内燃机的排气通道中并具有氧化功能的催化剂，下游侧温度检测装置，其检测催化剂下游侧的废气的温度，以及添加装置 还原剂从催化剂的上游侧排入废气中，其中还提供相关值计算装置，其计算与当下游侧温度检测装置检测到的温度的变化量相关的相关值时 通过加法装置添加还原剂，并且当进行内燃机的瞬时运转时，以及通过比较相关值和指示劣化的阈值来确定催化剂的劣化的确定装置 催化剂。

    Abnormality diagnosis apparatus for exhaust purification system
    10.
    发明授权
    Abnormality diagnosis apparatus for exhaust purification system 有权
    排气净化系统异常诊断装置

    公开(公告)号：US08240130B2

    公开(公告)日：2012-08-14

    申请号：US12594753

    申请日：2008-11-14

    申请人： Hiroshi Sawada ,  Daisuke Shibata

    发明人： Hiroshi Sawada ,  Daisuke Shibata

    IPC分类号： F01N3/00 ,  F01N3/10 ,  F02B77/08 ,  F02D17/04 ,  F02M63/02

    CPC分类号： F01N3/2066 ,  B01D53/30 ,  B01D53/9409 ,  B01D53/9477 ,  B01D53/9495 ,  B01D2251/2067 ,  B01D2255/1021 ,  F01N3/035 ,  F01N3/08 ,  F01N11/00 ,  F01N2550/05 ,  F01N2560/00 ,  F01N2560/021 ,  F01N2560/026 ,  F01N2560/06 ,  F01N2560/14 ,  F01N2570/14 ,  F01N2610/02 ,  F01N2900/1808 ,  Y02A50/2344 ,  Y02T10/24 ,  Y02T10/47

    摘要： In an exhaust purification system having a urea addition device adding a urea aqueous solution to an NOx catalyst of selective reduction type provided in an exhaust passage in an internal combustion engine, a sensor detecting an ammonia concentration is provided at the downstream side of the NOx catalyst. During fuel cut, a predetermined amount of urea aqueous solution is added. Then, based on a sensor output obtained at this time, an abnormality in at least one of the urea addition device and the urea aqueous solution is detected. The addition of the urea aqueous solution during the fuel cut prevents reactive consumption between urea and NOx. The sensor output corresponding to the amount of the urea aqueous solution is obtained. This output condition is compared with a normal one to allow determination of whether or not an appropriate amount of urea aqueous solution of appropriate quality has been added.

    摘要翻译： 在具有将尿素水溶液添加到设置在内燃机的排气通路中的选择还原型的NOx催化剂的尿素添加装置的排气净化系统中，在NOx催化剂的下游侧设置有检测氨浓度的传感器 。 在燃料切断期间，加入预定量的尿素水溶液。 然后，基于此时获得的传感器输出，检测到尿素添加装置和尿素水溶液中的至少一个的异常。 在燃料切断期间加入尿素水溶液可防止尿素和NOx之间的反应性消耗。 获得对应于尿素水溶液量的传感器输出。 将该输出条件与正常输出条件进行比较，以确定是否已经添加了适当量的适当质量的尿素水溶液。