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公开(公告)号：US20130192208A1
公开(公告)日：2013-08-01
申请号：US13125746
申请日：2010-10-22
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。
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公开(公告)号：US08495861B2
公开(公告)日：2013-07-30
申请号：US12303500
申请日：2007-06-07
申请人： Daisuke Shibata , Hiroshi Sawada , Keisuke Fukuoka
发明人： Daisuke Shibata , Hiroshi Sawada , Keisuke Fukuoka
IPC分类号： F01N3/021
CPC分类号： B01D46/0086 , B01D2279/30 , F01N3/103 , F01N9/007 , F01N11/002 , F01N13/0097 , F01N2550/04 , F01N2560/08 , F01N2900/0412 , F01N2900/1406 , F02B37/00 , Y02T10/47
摘要： An object of the present invention is to provide a technology that enables detection of a fault of a PM trapper with improved accuracy. In the present invention, a pressure sensor 20 that measures a differential pressure across a PM trapper 11 is provided, and a fault of a PM trapper is determined based on an amount of change in the differential pressure across the PM trapper 11 between two different operation states of an internal combustion engine 1 in which the ambient temperature around the pressure sensor 20 falls within a specific temperature range. Since variations in the offset error of the differential pressure sensor 20 caused by changes in the ambient temperature around the differential pressure sensor 20 is made small, the amount of change in the differential pressure across the PM trapper 11 can be measured more accurately, and a fault of the PM trapper 11 can be detected with improved accuracy.
摘要翻译： 本发明的目的是提供一种能够以更高精度检测PM捕集器的故障的技术。 在本发明中，提供了测量PM捕集器11两端的压差的压力传感器20，根据在两个不同操作之间的PM捕集器11的差压的变化量来确定PM捕集器的故障 内燃机1的状态，其中压力传感器20周围的环境温度落在特定温度范围内。 由于差压传感器20周围的环境温度的变化引起的差压传感器20的偏移误差的偏差变小，所以可以更精确地测定PM捕集器11的差压的变化量， 可以提高精度来检测PM捕集器11的故障。
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13.发明授权公开(公告)号：US08490385B2
公开(公告)日：2013-07-23
申请号：US13055062
申请日：2009-07-22
申请人： Yuji Miyoshi , Hiroshi Sawada , Daisuke Shibata
发明人： Yuji Miyoshi , Hiroshi Sawada , Daisuke Shibata
CPC分类号： F01N11/002 , F01N3/0885 , F01N3/2033 , F01N3/2066 , F01N3/208 , F01N9/002 , F01N2550/02 , F01N2560/06 , F01N2610/03 , F02D41/1446 , F02D41/1447 , F02D2200/0804 , Y02T10/24 , Y02T10/47
摘要： A catalyst deterioration diagnosis system performs a diagnosis of deterioration of the oxidation catalyst based on a high-temperature-inflow-condition exhaust gas temperature and a low-temperature-inflow-condition exhaust gas temperature. The high-temperature-inflow-condition exhaust gas temperature is a temperature detected by a temperature sensor while the temperature of the exhaust gas that flows into the oxidation catalyst is in a high temperature region H while the reducing agent is supplied from the reducing agent supply means into the exhaust gas that flows into the oxidation catalyst. The low-temperature-inflow-condition exhaust gas temperature is a temperature detected by the temperature sensor while the temperature of the exhaust gas that flows into the oxidation catalyst is in a low temperature region L while the reducing agent is supplied from a reducing agent supply means into the exhaust gas that flows into the oxidation catalyst.
摘要翻译： 催化剂劣化诊断系统基于高温流入条件排气温度和低温流入条件排气温度来诊断氧化催化剂的劣化。 高温流入条件废气温度是由温度传感器检测的温度，而流入氧化催化剂的废气的温度处于高温区域H，同时还原剂从还原剂供给源供给 意味着流入氧化催化剂的废气。 低温流入条件废气温度是由温度传感器检测的温度，而流入氧化催化剂的废气的温度处于低温区域L，而还原剂由还原剂供给源 意味着流入氧化催化剂的废气。
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14.发明授权Abnormality diagnosis system and method for diagnosing abnormality in filter regeneration system 失效异常诊断系统及过滤器再生系统异常诊断方法公开(公告)号：US08359827B2
公开(公告)日：2013-01-29
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： F01N3/00
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。
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公开(公告)号：US20100186491A1
公开(公告)日：2010-07-29
申请号：US12666238
申请日：2008-06-19
IPC分类号： G01M15/10
CPC分类号： F02D41/221 , F02D41/1495 , F02D41/1498 , F02D2041/1431 , F02D2041/228 , Y02T10/40
摘要： An abnormality diagnosis device according to the present invention can calculate a calculation air-fuel ratio A/Fk based upon a fuel injection quantity and an intake air quantity, and determine the abnormality of the air-fuel ratio sensor based upon the calculation air-fuel ratio and an actual air-fuel ratio detected by an air-fuel ratio sensor, when an operating condition in the internal combustion engine relatively rapidly changes according to an engine operating demand and thereby the calculation air-fuel ratio relatively rapidly changes. Since the air-fuel ratio is not forcibly changed and fluctuated, deterioration of the exhaust emission and the combustion state, and deterioration of the vibration and the noise at abnormality diagnosing can be certainly prevented.
摘要翻译： 根据本发明的异常诊断装置可以基于燃料喷射量和进气量计算计算空燃比A / Fk，并且基于计算空气燃料来确定空燃比传感器的异常 当内燃机的运转状态相对快速地根据发动机运转要求而变化时，空燃比传感器检测出的实际空燃比相对快速变化。 由于空燃比没有强制变化和波动，所以可以可靠地防止排气排放和燃烧状态的劣化，异常诊断时的振动和噪声的劣化。
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公开(公告)号：US20090229253A1
公开(公告)日：2009-09-17
申请号：US12097072
申请日：2006-12-14
申请人： Daisuke Shibata , Hiroshi Sawada
发明人： Daisuke Shibata , Hiroshi Sawada
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 he 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，以提高的精度来推测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排出通道上游的排气中的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：US20080066447A1
公开(公告)日：2008-03-20
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： F01N11/00
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： 提供了一种能够指定成员的技术，当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，确实发生故障。 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。
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18.发明授权公开(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
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。
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公开(公告)号：US08656700B2
公开(公告)日：2014-02-25
申请号：US13125746
申请日：2010-10-22
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。
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20.发明申请FAILURE DETECTION APPARATUS AND FAILURE DETECTION METHOD FOR A PARTICULATE FILTER 有权一种颗粒过滤器的故障检测装置和故障检测方法公开(公告)号：US20130014641A1
公开(公告)日：2013-01-17
申请号：US13637586
申请日：2010-03-26
申请人： Kazuya Takaoka , Daisuke Shibata , Hiroshi Sawada , Toru Kidokoro
发明人： Kazuya Takaoka , Daisuke Shibata , Hiroshi Sawada , Toru Kidokoro
IPC分类号： B01D29/62
CPC分类号： F01N11/002 , F01N3/0253 , F01N3/035 , F01N9/002 , F01N11/00 , F01N2550/04 , F01N2560/05 , F01N2900/0408 , F01N2900/0412 , F01N2900/0601 , F01N2900/1606 , F02D41/1466 , F02D41/1467 , F02D2200/0812 , Y02T10/47
摘要： The present invention is intended to detect a failure of a PM filter with a higher degree of accuracy. The present invention is provided with: a PM trapping efficiency calculation part to calculate a PM trapping efficiency (which is a proportion of an amount of particulate matter trapped with respect to an amount of inflow particulate matter) based on an amount of inflow particulate matter obtained by an inflow particulate matter obtaining part, and an amount of outflow particulate matter detected by a PM sensor; and a failure detection part to make a determination that a failure has occurred in the PM filter, in cases where there has appeared a tendency for the PM trapping efficiency to decrease during a period of time until the execution of the following filter regeneration processing is started after the completion of execution of the filter regeneration processing.
摘要翻译： 本发明旨在以更高的精度检测PM滤波器的故障。 本发明提供了一种PM捕集效率计算部，其基于所获得的流入粒子物质的量，计算PM捕集效率（其相对于流入粒子物质的量捕获的颗粒物质的量的比例） 通过流入颗粒物获取部分和由PM传感器检测的流出颗粒物质的量; 以及故障检测部，在PM滤波器中发生故障发生的判定的情况下，在直到执行以下的滤波再生处理开始之前，PM捕集效率在一段时间内降低的趋势的情况下 完成执行过滤器再生处理。
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