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31. 发明授权

US07849672B2 Failure diagnosis method for reducing agent addition valve 有权
标题翻译：还原剂添加阀的故障诊断方法
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。

32. 发明申请

US20090205318A1 FAULT DETECTION SYSTEM FOR PM TRAPPER 审中-公开
标题翻译：故障检测系统
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
IPC分类号： F01N11/00 , G01M15/10
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。

33. 发明申请

US20080028829A1 Air Fuel Ratio Sensor Deterioration Determination System for Compression Ignition Internal Combustion Engine 有权
标题翻译：空气燃料比传感器劣化测定系统压缩点火内燃机
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。

34. 发明申请

US20110000290A1 ABNORMALITY DIAGNOSIS APPARATUS AND ABNORMALITY DIAGNOSIS METHOD FOR NOx SENSOR 有权
标题翻译：异常诊断装置和异常检测方法
公开(公告)号：US20110000290A1
公开(公告)日：2011-01-06
申请号：US12922146
申请日：2008-05-21
申请人： Hiroshi Sawada , Daisuke Shibata
发明人： Hiroshi Sawada , Daisuke Shibata
IPC分类号： G01M15/10
CPC分类号： F02D41/222 , F01N3/2066 , F01N2550/00 , F01N2560/026 , F02D41/0275 , F02D41/1441 , F02D41/146 , F02D41/1461 , F02D41/1463 , Y02T10/40
摘要： An exhaust passage (15) of an internal-combustion engine (10) includes a selective reduction NOx catalyst (34) and an after-catalyst NOx sensor (50) for detecting a NOx concentration Cr at the downstream thereof. Reducing agent is selectively added from an addition valve (40) to the NOx catalyst. A NOx concentration Ce at the upstream side of the NOx catalyst is detected or estimated. NOx concentrations Cr and Ce before and after the NOx catalyst, which were detected or estimated during the stoppage of an addition of the reducing agent, are compared to each other to thereby determine an abnormality of the after-catalyst NOx sensor (50). An abnormality diagnosis is executed while the addition of reducing agent is being stopped to remove an influence by the NOx catalyst.
摘要翻译：内燃机（10）的排气通路（15）包括用于检测下游的NOx浓度Cr的选择还原NOx催化剂（34）和催化剂后NOx传感器（50）。从添加阀（40）向NOx催化剂选择性地添加还原剂。检测或估计NOx催化剂上游侧的NOx浓度Ce。将在还原剂添加停止期间检测或估计的NOx催化剂之前和之后的NOx浓度Cr和Ce彼此进行比较，从而确定催化剂后NOx传感器（50）的异常。在停止添加还原剂以除去NOx催化剂的影响的同时执行异常诊断。

35. 发明授权

US07421333B2 Monitoring system for internal combustion engine 失效
标题翻译：内燃机监控系统
公开(公告)号：US07421333B2
公开(公告)日：2008-09-02
申请号：US10584775
申请日：2005-05-11
申请人： Hiroshi Sawada , Daisuke Shibata
发明人： Hiroshi Sawada , Daisuke Shibata
IPC分类号： B60T7/12 , F02M25/07
CPC分类号： F02D41/0052 , F01N3/035 , F01N3/0821 , F01N3/0842 , F02D41/1446 , F02D41/1454 , F02D41/187 , F02D41/222 , Y02T10/47
摘要： A technique is provided which can specify a member in which malfunction really occurs when there exists malfunction in at least one of a plurality of state values representing the state of an internal combustion engine. When an amount of fresh intake air is controlled by increasing and decreasing an amount of EGR gas in a feedback manner, and when an amount of fuel to be added to an exhaust gas is controlled based on an air fuel ratio sensor in a feedback manner, a determination is made, based on the result of comparison between output values and command values of members to be detected and corresponding reference values, as to in which member malfunction occurs. Such a determination is based on the fact that relations between output values and command values of the members to be detected and corresponding reference values in individual operating states are different from one another depending on sensors or devices in which malfunction occurs.
摘要翻译：提供了一种技术，其可以指定在表示内燃机的状态的多个状态值中的至少一个中存在故障时真正发生故障的构件。当通过以反馈方式增加和减少EGR气体的量来控制新鲜进气量时，并且当以反馈方式基于空燃比传感器控制添加到排气的燃料量时，基于成员故障发生的输出值和要检测的构件的指令值和对应的参考值之间的比较的结果进行确定。这样的判断基于以下事实：根据要发生故障的传感器或装置，要检测的构件的输出值和指令值之间的关系以及各个操作状态中的相应参考值彼此不同。

36. 发明授权

US08307699B2 Abnormality diagnosis apparatus and abnormality diagnosis method for NOx sensor 有权
标题翻译： NOx传感器异常诊断装置及异常诊断方法
公开(公告)号：US08307699B2
公开(公告)日：2012-11-13
申请号：US12922146
申请日：2008-05-21
申请人： Hiroshi Sawada , Daisuke Shibata
发明人： Hiroshi Sawada , Daisuke Shibata
IPC分类号： G01M15/10
CPC分类号： F02D41/222 , F01N3/2066 , F01N2550/00 , F01N2560/026 , F02D41/0275 , F02D41/1441 , F02D41/146 , F02D41/1461 , F02D41/1463 , Y02T10/40
摘要： An exhaust passage (15) of an internal-combustion engine (10) includes a selective reduction NOx catalyst (34) and an after-catalyst NOx sensor (50) for detecting a NOx concentration Cr at the downstream thereof. Reducing agent is selectively added from an addition valve (40) to the NOx catalyst. A NOx concentration Ce at the upstream side of the NOx catalyst is detected or estimated. NOx concentrations Cr and Ce before and after the NOx catalyst, which were detected or estimated during the stoppage of an addition of the reducing agent, are compared to each other to thereby determine an abnormality of the after-catalyst NOx sensor (50). An abnormality diagnosis is executed while the addition of reducing agent is being stopped to remove an influence by the NOx catalyst.
摘要翻译：内燃机（10）的排气通路（15）包括用于检测下游的NOx浓度Cr的选择还原NOx催化剂（34）和催化剂后NOx传感器（50）。从添加阀（40）向NOx催化剂选择性地添加还原剂。检测或估计NOx催化剂上游侧的NOx浓度Ce。将在还原剂添加停止期间检测或估计的NOx催化剂之前和之后的NOx浓度Cr和Ce彼此进行比较，从而确定催化剂后NOx传感器（50）的异常。在停止添加还原剂以除去NOx催化剂的影响的同时执行异常诊断。

37. 发明申请

US20110314792A1 ABNORMALITY DIAGNOSIS SYSTEM AND METHOD FOR DIAGNOSING ABNORMALITY IN FILTER REGENERATION SYSTEM 失效
标题翻译：过滤器再生系统异常诊断系统及诊断方法
公开(公告)号：US20110314792A1
公开(公告)日：2011-12-29
申请号：US12677277
申请日：2009-02-24
申请人： Daisuke Shibata , Koichi Kitaura , Hiroshi Sawada , Tatsuya Tsuji
发明人： Daisuke Shibata , Koichi Kitaura , Hiroshi Sawada , Tatsuya Tsuji
IPC分类号： F01N11/00
CPC分类号： F01N3/025 , F01N9/002 , F01N11/002 , F01N2550/04 , F01N2900/0601 , F01N2900/1606 , Y02T10/47
摘要： The invention intends to provide a technology which makes it possible to diagnose with higher accuracy whether or not abnormality occurs in a filter regeneration system causing excessive execution frequency of a regeneration process. The filter regeneration system initiates execution of the regeneration process, incase an estimated particulate matter (PM) accumulation amount at the filter reaches a pre-determined regeneration requiring accumulation amount; or in case the pressure upstream of the filter or the differential pressure across the filter reaches a pre-determined regeneration requiring value, the value being larger than the pressure or the differential pressure corresponding to the regeneration requiring accumulation amount. Then, the diagnosis is carried out based on a ratio of an estimated PM accumulation amount at the initiation of the execution of the regeneration process to the regeneration requiring accumulation amount.
摘要翻译：本发明旨在提供一种能够以更高精度诊断导致再生处理的过度执行频率的过滤器再生系统中发生异常的技术。过滤器再生系统启动再生处理的执行，使得在过滤器处的估计的颗粒物质（PM）累积量达到预定的再生需要累积量; 或者在过滤器上游的压力或过滤器上的压差达到预定的再生需求值的情况下，该值大于对应于再生需要累积量的压力或压差。然后，基于再生处理开始时的估计PM积累量与再生需求累积量的比例进行诊断。

38. 发明授权

US08074442B2 Method of determining abnormality in particulate filter 有权
标题翻译：确定微粒过滤器异常的方法
公开(公告)号：US08074442B2
公开(公告)日：2011-12-13
申请号：US11629998
申请日：2005-06-21
申请人： Hiroshi Sawada , Daisuke Shibata , Keisuke Fukuoka
发明人： Hiroshi Sawada , Daisuke Shibata , Keisuke Fukuoka
IPC分类号： F01N3/00
CPC分类号： F01N11/002 , F01N3/035 , F01N11/005 , F01N13/009 , F01N2550/04 , F01N2900/0422 , F02D41/0055 , F02D41/12 , Y02T10/47
摘要： An object of the invention is to realize a method of determining an abnormality in a particulate filter (5) capable of trapping and oxidizing particulate matter contained in exhaust gas in which even a minor abnormality in which small quantity of particulate matter can pass through the particulate filter (5) can be determined with a high degree of accuracy. To achieve this object, the abnormality determination method according to the invention, the transition of the inflowing exhaust gas temperature in and the outflowing exhaust gas temperature out of the particulate filter (5) during deceleration operating, and the degree of decrease in the outflowing exhaust gas temperature relative to the inflowing exhaust gas temperature is computed based on the transition. If the degree of decrease exceeds a threshold value, it is determined that the particulate filter (5) is abnormal.
摘要翻译：本发明的目的是实现一种确定能够捕集和氧化废气中所含的颗粒物质的颗粒过滤器（5）的异常的方法，其中即使少量颗粒物质可以通过颗粒物的微小异常过滤器（5）可以高精度地确定。为了达到这个目的，根据本发明的异常判定方法，减速运转时，从微粒过滤器（5）流出的废气温度和排出废气温度的过渡以及排出的排气量的减少程度基于转变计算相对于流入的废气温度的气体温度。如果降低程度超过阈值，则确定微粒过滤器（5）异常。

39. 发明申请

US20100115918A1 ABNORMALITY DIAGNOSIS APPARATUS FOR EXHAUST PURIFICATION SYSTEM 有权
标题翻译：异常净化系统异常诊断装置
公开(公告)号：US20100115918A1
公开(公告)日：2010-05-13
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： F01N11/00 , G01M15/10
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。

40. 发明申请

US20100089371A1 FORCED AIR INDUCTION SYSTEM FOR INTERNAL COMBUSTION ENGINE AND ABNORMALITY DIAGNOSIS METHOD FOR SAME SYSTEM 审中-公开
标题翻译：用于内燃机的强制空气感应系统和同系统异常诊断方法
公开(公告)号：US20100089371A1
公开(公告)日：2010-04-15
申请号：US12593001
申请日：2008-03-25
申请人： Daisuke Shibata , Hiroshi Sawada , Go Ohara
发明人： Daisuke Shibata , Hiroshi Sawada , Go Ohara
IPC分类号： F02M25/07 , F02B47/08
CPC分类号： F02D41/0007 , F02B29/0406 , F02B37/12 , F02D41/0072 , F02D41/18 , F02D41/221 , F02D2200/0406 , F02M26/05 , F02M26/49 , Y02T10/144 , Y02T10/47
摘要： A forced air induction system for an internal combustion engine (1) has: a forced air induction device; an EGR valve (10) provided in an EGR passage (9) connecting an intake air passage (14) and an exhaust gas passage (6); and a diagnosis device (20) adapted to execute an abnormality diagnosis for the forced air induction device based on a deviation of the actual boost pressure at the forced air induction device from a target boost pressure. The diagnosis device inhibits execution of the abnormality diagnosis when the operation state of the EGR valve is out of a normal operation range specifically determined.
摘要翻译：用于内燃机（1）的强制空气感应系统具有：强制空气感应装置; 设置在连接进气通道（14）和排气通道（6）的EGR通路（9）中的EGR阀（10）以及诊断装置（20），其适于基于强制空气感应装置处的实际增压压力与目标增压压力的偏差来执行强制空气感应装置的异常诊断。当EGR阀的操作状态不在特定确定的正常操作范围内时，诊断装置禁止执行异常诊断。

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