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1.发明授权公开(公告)号：US08806928B2
公开(公告)日：2014-08-19
申请号：US13695372
申请日：2010-04-30
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。
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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
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。
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3.发明授权公开(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
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。
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公开(公告)号：US07980059B2
公开(公告)日：2011-07-19
申请号：US12097072
申请日：2006-12-14
申请人： Daisuke Shibata , Hiroshi Sawada
发明人： Daisuke Shibata , Hiroshi Sawada
IPC分类号： F01N3/00
CPC分类号： B01D53/9431 , B01D53/9495 , F01N3/0807 , F01N3/0842 , F01N3/0878 , F01N3/2053 , F01N3/206 , F01N11/00 , F01N2550/03 , F01N2560/026 , Y02T10/47
摘要： An object is to estimate the degree of deterioration of an NOx catalyst with improved accuracy in an exhaust gas purification system having the NOx catalyst provided in an exhaust passage. According to the present invention, an NOx sensor is provided downstream of an NOx catalyst, and the difference between an estimated value of the NOx concentration in the exhaust gas in the exhaust passage upstream of the NOx catalyst and a detection value of the NOx sensor at a time when NOx in the exhaust gas is not removed in the NOx catalyst is calculated. In addition, in estimating the degree of deterioration of the NOx catalyst, the estimated value of the NOx concentration in the exhaust gas in the exhaust passage upstream of the NOx catalyst is corrected based on this difference, and the degree of deterioration of the NOx catalyst is estimated based on the difference between this corrected value and the detection value of the NOx sensor.
摘要翻译： 本发明的目的是在具有设置在排气通路中的NOx催化剂的排气净化系统中，通过提高精度来估计NOx催化剂的劣化程度。 根据本发明，NOx传感器设置在NOx催化剂的下游，NOx排出通道上游排气中的排气中NOx浓度的估计值与NOx传感器的检测值之间的差值 计算在NOx催化剂中未排出废气中的NOx的时间。 此外，在推定NOx催化剂的劣化程度时，基于该差异来校正NOx催化剂上游排气通路中的排气中的NOx浓度的推定值，NOx催化剂的劣化程度 基于该校正值与NOx传感器的检测值之间的差异来估计。
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公开(公告)号：US07849672B2
公开(公告)日：2010-12-14
申请号：US11790028
申请日：2007-04-23
申请人： Daisuke Shibata , Hiroshi Sawada , Satoru Maeda
发明人： Daisuke Shibata , Hiroshi Sawada , Satoru Maeda
IPC分类号： F01N3/00
CPC分类号： F01N11/00 , F01N3/0253 , F01N3/0814 , F01N3/0842 , F01N3/36 , F01N2550/05 , F01N2610/03 , F02D41/221 , F02D41/402 , Y02T10/47
摘要： An object of the invention is to diagnose a failure of an addition valve provided in the exhaust system of an internal combustion engine. To achieve the object, post injection through a fuel injection valve of the internal combustion engine and reducing agent addition through the reducing agent addition valve are performed at different timings, the quantity of fuel injected through the fuel injection valve when the post injection is performed and the quantity of reducing agent added through the reducing agent addition valve when the reducing agent addition is performed are estimated based on a same parameter, and it is diagnosed that the reducing agent addition valve has a failure on condition that the difference between the estimated fuel quantity and the estimated reducing agent quantity exceeds a predetermined quantity.
摘要翻译： 本发明的目的是诊断设置在内燃机的排气系统中的添加阀的故障。 为了实现该目的，通过内燃机的燃料喷射阀和通过还原剂添加阀添加的还原剂的后喷射在不同的时刻进行，在执行后喷射时通过燃料喷射阀喷射的燃料量;以及 在进行还原剂添加时，通过还原剂添加阀添加的还原剂的量基于相同的参数来推定，并且在诊断为还原剂添加阀具有失效的条件下，估计燃料量 并且估计的还原剂量超过预定量。
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公开(公告)号：US20090205318A1
公开(公告)日：2009-08-20
申请号：US12305123
申请日：2007-06-18
申请人： Daisuke Shibata , Hiroshi Sawada , Keisuke Fukuoka
发明人： Daisuke Shibata , Hiroshi Sawada , Keisuke Fukuoka
CPC分类号： B01D46/0086 , B01D2279/30 , F01N11/002 , F01N2550/04 , F01N2560/06 , Y02T10/47
摘要： An object of the present invention is to provide a technology that enables to detect a fault of a PM trapper with improved accuracy. According to the present invention, a plurality of temperature sensors 10 are provided in an exhaust passage 9 just downstream of a PM trapper 17 in such a way that their temperature detection elements are positioned on a plane that is perpendicular to an imaginary center axis of the exhaust passage 9. A change in the radial direction temperature distribution of the exhaust gas flowing out of the PM trapper 17 upon occurrence of a fault in the PM trapper 17 is detected from measurement values of the temperature sensors 10, and a fault of the PM trapper 17 is detected based on this radial direction temperature distribution. Since the measurement values of the temperature sensors 10 are unlikely to be affected by the amount of PM deposited on the PM trapper 17, detection of a fault of the PM trapper 17 can be achieved with improved accuracy.
摘要翻译： 本发明的目的是提供一种技术，其能够以提高的精度检测PM捕集器的故障。 根据本发明，多个温度传感器10设置在PM捕集器17正下游的排气通道9中，使得它们的温度检测元件位于垂直于 在PM捕集器17发生故障时从PM捕集器17流出的废气的径向温度分布的变化是从温度传感器10的测量值和PM的故障中检测出的 基于该径向温度分布检测捕集器17。 由于温度传感器10的测量值不太可能受到PM捕集器17上沉积的PM的影响，所以可以提高精度来检测PM捕集器17的故障。
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7.发明申请公开(公告)号：US20080028829A1
公开(公告)日：2008-02-07
申请号：US11630863
申请日：2005-06-29
申请人： Hiroshi Sawada , Daisuke Shibata
发明人： Hiroshi Sawada , Daisuke Shibata
IPC分类号： G01M15/10
CPC分类号： F01N3/0814 , F01N3/0842 , F01N13/0097 , F01N2550/00 , F01N2560/02 , F01N2610/03 , F02D41/0275 , F02D41/028 , F02D41/1454 , F02D41/1474 , F02D41/1495
摘要： In a compression ignition internal combustion engine provided with an NOx storage-reduction catalyst on an exhaust system, when the air fuel ratio of the exhaust gas being in a lean state is controlled to a rich state, a response time (ResS) from a time point an air fuel ratio sensor detects a first air fuel ratio (AF1), which is leaner than a stoichiometric air fuel ratio (AFS), to a time point the air fuel ratio sensor detects a second air fuel ratio (AF2), which is equal to or leaner than the stoichiometric air fuel ratio (AFS) and richer than the first air fuel ratio (AF1). When the response time (ResS) exceeds a stoichiometric air fuel ratio shift reference time (StdS), a determination is made that the air fuel ratio sensor is degraded.
摘要翻译： 在排气系统中设有NOx吸留还原催化剂的压缩点火式内燃机中，当将处于稀薄状态的排气的空燃比控制为浓状态时，从时间起响应时间（ResS） 指出空燃比传感器将空燃比传感器检测到第二空气燃料比（AF2）的时间点检测为比化学计量空燃比（AFS）更稀的第一空燃比（AF 1） 其等于或者比理论空燃比（AFS）更稀，并且比第一空气燃料比（AF 1）更浓。 当响应时间（ResS）超过理论空燃比偏移基准时间（StdS）时，确定空燃比传感器劣化。
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公开(公告)号：US08943814B2
公开(公告)日：2015-02-03
申请号：US13580325
申请日：2011-09-06
申请人： Daisuke Shibata , Toru Kidokoro , Hiroshi Sawada , Kazuya Takaoka
发明人： Daisuke Shibata , Toru Kidokoro , Hiroshi Sawada , Kazuya Takaoka
CPC分类号： F01N3/10 , F01N3/035 , F01N3/2066 , F01N11/00 , F01N13/009 , F01N2430/00 , F01N2550/00 , F01N2550/04 , F01N2560/05 , F01N2900/0422 , F01N2900/08 , F01N2900/1606 , F02D41/0255 , F02D41/1495 , F02D41/22 , Y02T10/26 , Y02T10/47
摘要： A warm-up system for an exhaust system of an internal combustion engine includes an electronic control unit that performs warm-up control for warming up an exhaust system component upon start-up of the internal combustion engine and a failure diagnosis performing module of the electronic control unit that performs failure diagnosis for the exhaust system component after the completion of warm-up of the exhaust system component. If the internal combustion engine repeatedly stops before completion of the failure diagnosis for a predetermined period of time, then the electronic control unit changes the warm-up control performed upon start-up of the internal combustion engine to a control that raises the temperature of the exhaust system component more quickly than the warm-up control performed during the predetermined period.
摘要翻译： 一种用于内燃机的排气系统的预热系统包括：电子控制单元，其在内燃机启动时进行预热排气系统部件的预热控制，电子设备的故障诊断执行模块 控制单元，其在排气系统部件的预热完成之后对排气系统部件执行故障诊断。 如果内燃机在故障诊断完成一段预定时间之前反复停止，则电子控制单元将内燃机启动时的预热控制改变为升高温度的控制 排气系统组件比在预定时段期间执行的预热控制更快。
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9.发明申请公开(公告)号：US20130098146A1
公开(公告)日：2013-04-25
申请号：US13695372
申请日：2010-04-30
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。
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10.发明授权Abnormality diagnosis apparatus and abnormality diagnosis method for NOx catalyst 有权NOx催化剂异常诊断装置及异常诊断方法公开(公告)号：US08171781B2
公开(公告)日：2012-05-08
申请号：US12747409
申请日：2008-06-11
申请人： Daisuke Shibata , Hiroshi Sawada , Toru Kidokoro
发明人： Daisuke Shibata , Hiroshi Sawada , Toru Kidokoro
IPC分类号： G01M15/10
CPC分类号： F01N3/208 , F01N11/005 , F01N2550/02 , F01N2560/06 , F01N2610/02 , F01N2610/146 , F01N2900/1602 , F01N2900/1621 , Y02T10/24 , Y02T10/47
摘要： An abnormality diagnosis apparatus for an NOx catalyst of the present invention measures an index value (R) regarding an NOx clarification capacity of an NOx catalyst and determines an abnormality of the NOx catalyst based on index values (R1, R2) respectively measured at a timing (Tc1) at which the NOx catalyst has a relatively-low activation level and a timing (Tc2) at which the NOx catalyst has a relatively-high activation level. Since the index value at the timing at which the NOx catalyst has a relatively-low activation level (i.e., a timing at which the NOx catalyst originally does not have a sufficient NOx clarification capacity) is used, the abnormality diagnosis for the NOx catalyst can be carried out without intentionally deteriorating emission.
摘要翻译： 本发明的NOx催化剂的异常诊断装置测定关于NOx催化剂的NOx澄清能力的指标值（R），并且基于在时刻分别测定的指标值（R1，R2），判定NOx催化剂的异常 （Tc1），其中NOx催化剂具有相对低的活化水平和NOx催化剂具有相对高的活化水平的定时（Tc2）。 由于使用NOx催化剂具有相对低的活化水平（即，NOx催化剂原本不具有足够的NOx澄清容量的时间）的定时的指标值，因此NOx催化剂的异常诊断 不会意图恶化排放。
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