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。

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。

公开(公告)号：US08347604B2

公开(公告)日：2013-01-08

申请号：US12677267

申请日：2009-03-31

申请人： Taiga Hagimoto ,  Daisuke Shibata

发明人： Taiga Hagimoto ,  Daisuke Shibata

IPC分类号： F01N3/00

CPC分类号： F01N11/002 ,  F01N3/106 ,  F01N3/2066 ,  F01N13/009 ,  F01N2550/02 ,  F01N2560/026 ,  F01N2560/06 ,  F01N2560/14 ,  F01N2900/14 ,  Y02T10/24 ,  Y02T10/47

摘要： The degree of deterioration of a catalyst is obtained accurately in cases where a plurality of catalysts is disposed at an exhaust passage of an internal combustion engine. Under the assumption that the degree of deterioration of a catalyst which is disposed at a location upstream of an NOx selective reduction catalyst and has an oxidizing ability is at a predetermined value, the ratio of NO2 in the NOx which inflows into the NOx selective reduction catalyst is estimated; the NOx removal rate of the NOx selective reduction catalyst is calculated a plurality of times at least until a local maximum value is obtained; and the degree of deterioration of the catalyst having an oxidizing ability is determined by comparison between the ratio of NO2 observed when the NOx removal rate of the NOx selective reduction catalyst reaches the local maximum value and a reference value of the ratio.

摘要翻译： 在多个催化剂设置在内燃机的排气通道的情况下，能够精确地获得催化剂的劣化程度。 在设置在NOx选择还原型催化剂的上游并具有氧化能力的位置的催化剂的劣化程度为预定值的情况下，流入NOx选择还原催化剂的NO x的比例 估计 至少直到获得局部最大值，多次计算NOx选择还原催化剂的NOx去除速率; 并且通过将NOx选择还原催化剂的NOx去除率达到局部最大值时观察到的NO 2的比与比率的基准值进行比较来确定具有氧化能力的催化剂的劣化程度。

公开(公告)号：US08132450B2

公开(公告)日：2012-03-13

申请号：US12670927

申请日：2009-04-14

申请人： Daisuke Shibata ,  Hiroshi Sawada ,  Taiga Hagimoto ,  Kazuhiro Wakao ,  Keisuke Sano ,  Kimikazu Yoda

发明人： Daisuke Shibata ,  Hiroshi Sawada ,  Taiga Hagimoto ,  Kazuhiro Wakao ,  Keisuke Sano ,  Kimikazu Yoda

IPC分类号： G01M15/10

CPC分类号： F01N11/002 ,  F01N3/2066 ,  F01N2550/02 ,  F01N2550/05 ,  F01N2560/026 ,  F01N2560/06 ,  F01N2610/02 ,  Y02T10/24 ,  Y02T10/47

摘要： In a malfunction diagnosis device for an exhaust gas purification system including an exhaust gas purification catalyst disposed in the exhaust passage of an internal combustion engine, and a reductant supply device that supplies reductant to exhaust gas that flows in an upstream side of the exhaust gas purification catalyst, the degree of degradation of the exhaust gas purification catalyst is diagnosed by comparing the timing at which the bed temperature of the exhaust gas purification catalyst starts to rise due to the heat of moisture adsorption reaction, against a normal value.

摘要翻译： 在一种排气净化系统的故障诊断装置中，该排气净化系统包括设置在内燃机的排气通路中的废气净化催化剂，以及还原剂供给装置，其向排气净化用上游侧的废气供给还原剂 通过将排气净化催化剂的床温度由于吸湿反应的热量开始上升的时间与正常值进行比较来诊断排气净化催化剂的劣化程度。

公开(公告)号：US20120006002A1

公开(公告)日：2012-01-12

申请号：US12677267

申请日：2009-03-31

申请人： Taiga Hagimoto ,  Daisuke Shibata

发明人： Taiga Hagimoto ,  Daisuke Shibata

IPC分类号： F01N11/00 ,  F01N3/10

CPC分类号： F01N11/002 ,  F01N3/106 ,  F01N3/2066 ,  F01N13/009 ,  F01N2550/02 ,  F01N2560/026 ,  F01N2560/06 ,  F01N2560/14 ,  F01N2900/14 ,  Y02T10/24 ,  Y02T10/47

摘要： The degree of deterioration of a catalyst is obtained accurately in cases where a plurality of catalysts is disposed at an exhaust passage of an internal combustion engine. Under the assumption that the degree of deterioration of a catalyst which is disposed at a location upstream of an NOx selective reduction catalyst and has an oxidizing ability is at a predetermined value, the ratio of NO2 in the NOx which inflows into the NOx selective reduction catalyst is estimated; the NOx removal rate of the NOx selective reduction catalyst is calculated a plurality of times at least until a local maximum value is obtained; and the degree of deterioration of the catalyst having an oxidizing ability is determined by comparison between the ratio of NO2 observed when the NOx removal rate of the NOx selective reduction catalyst reaches the local maximum value and a reference value of the ratio.

摘要翻译： 在多个催化剂设置在内燃机的排气通道的情况下，能够精确地获得催化剂的劣化程度。 在设置在NOx选择还原型催化剂的上游并具有氧化能力的位置的催化剂的劣化程度为预定值的情况下，流入NOx选择还原催化剂的NO x的比例 估计 至少直到获得局部最大值，多次计算NOx选择还原催化剂的NOx去除速率; 并且通过将NOx选择还原催化剂的NOx去除率达到局部最大值时观察到的NO 2的比与比率的基准值进行比较来确定具有氧化能力的催化剂的劣化程度。

公开(公告)号：US09594065B2

公开(公告)日：2017-03-14

申请号：US14110636

申请日：2011-04-12

申请人： Taiga Hagimoto ,  Daisuke Shibata

发明人： Taiga Hagimoto ,  Daisuke Shibata

IPC分类号： G01N31/10 ,  F01N11/00 ,  F01N3/20

CPC分类号： G01N31/10 ,  F01N3/206 ,  F01N3/2066 ,  F01N11/00 ,  F01N11/002 ,  F01N2550/02 ,  F01N2560/021 ,  F01N2560/026 ,  F01N2560/06 ,  F01N2560/14 ,  F01N2610/02 ,  F01N2900/1602 ,  F01N2900/1621 ,  Y02T10/24 ,  Y02T10/47

摘要： Apparatus for detecting deterioration of an NOx selective reduction catalyst in an exhaust passage of an internal combustion engine with improved accuracy, includes an NOx purification rate calculation unit for calculating the NOx purification rate in the NOx selective reduction catalyst based on the NOx concentration in the exhaust gas flowing into and out of the NOx selective reduction catalyst. A determination as to whether the NOx selective reduction catalyst is deteriorated is made based on the NOx purification rate at a time when the temperature of the NOx selective reduction catalyst is equal to or higher than a temperature (Tc0) at which the NOx purification rate will start to decrease with a rise in the temperature of the NOx selective reduction catalyst if the degree of deterioration of the NOx selective reduction catalyst is at the upper limit of an allowable range.

摘要翻译： 用于检测内燃机的排气通道中的NOx选择还原催化剂的劣化的设备，其精度提高，包括：NOx净化率计算单元，用于基于排气中的NOx浓度计算NOx选择还原催化剂中的NOx净化率 气体流入和流出NOx选择还原催化剂。 基于NOx选择还原催化剂的温度等于或高于NOx净化速率将达到的温度（Tc0）时的NOx净化率，判定NOx选择还原催化剂是否劣化的判定 如果NOx选择还原催化剂的劣化程度处于允许范围的上限，则随着NOx选择还原催化剂的温度升高而开始下降。

公开(公告)号：US08844268B2

公开(公告)日：2014-09-30

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 ,  F01N3/10 ,  F01N11/00 ,  F01N3/20

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。

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。

公开(公告)号：US20140050623A1

公开(公告)日：2014-02-20

申请号：US14110636

申请日：2011-04-12

申请人： Taiga Hagimoto ,  Daisuke Shibata

发明人： Taiga Hagimoto ,  Daisuke Shibata

IPC分类号： G01N31/10

CPC分类号： G01N31/10 ,  F01N3/206 ,  F01N3/2066 ,  F01N11/00 ,  F01N11/002 ,  F01N2550/02 ,  F01N2560/021 ,  F01N2560/026 ,  F01N2560/06 ,  F01N2560/14 ,  F01N2610/02 ,  F01N2900/1602 ,  F01N2900/1621 ,  Y02T10/24 ,  Y02T10/47

摘要： Apparatus for detecting deterioration of an NOx selective reduction catalyst in an exhaust passage of an internal combustion engine with improved accuracy, includes an NOx purification rate calculation unit for calculating the NOx purification rate in the NOx selective reduction catalyst based on the NOx concentration in the exhaust gas flowing into and out of the NOx selective reduction catalyst. A determination as to whether the NOx selective reduction catalyst is deteriorated is made based on the NOx purification rate at a time when the temperature of the NOx selective reduction catalyst is equal to or higher than a temperature (Tc0) at which the NOx purification rate will start to decrease with a rise in the temperature of the NOx selective reduction catalyst if the degree of deterioration of the NOx selective reduction catalyst is at the upper limit of an allowable range.

摘要翻译： 用于检测内燃机的排气通道中的NOx选择还原催化剂的劣化的设备，其精度提高，包括：NOx净化率计算单元，用于基于排气中的NOx浓度计算NOx选择还原催化剂中的NOx净化率 气体流入和流出NOx选择还原催化剂。 基于NOx选择还原催化剂的温度等于或高于NOx净化速率将达到的温度（Tc0）时的NOx净化率，判定NOx选择还原催化剂是否劣化的判定 如果NOx选择还原催化剂的劣化程度处于允许范围的上限，则随着NOx选择还原催化剂的温度升高而开始下降。

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。