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公开(公告)号：US20140003999A1
公开(公告)日：2014-01-02
申请号：US14006250
申请日：2011-03-22
IPC分类号： G01N31/10
CPC分类号： G01N31/10 , F01N3/0842 , F01N3/0871 , F01N9/00 , F01N11/00 , F01N2550/03 , F01N2560/021 , Y02T10/47
摘要： An accurate determination of deterioration of a NOx storage reduction catalyst. A supply device supplies a reducing agent to the NOx catalyst to change an air fuel ratio of an exhaust gas passing through the NOx catalyst, an NH3 detection device detects NH3 in the exhaust gas at the downstream side of the NOx catalyst, a control device adjusts an amount of the reducing agent so that the air fuel ratio of the exhaust gas becomes a predetermined rich air fuel ratio, and a determination device makes a determination that the NOx catalyst has deteriorated, when a detected value of the NH3 detection device becomes equal to or greater than a threshold value, at the time of supplying the reducing agent while adjusting the amount of the reducing agent so that the air fuel ratio of the exhaust gas becomes the predetermined rich air fuel ratio.
摘要翻译： 精确测定NOx储存还原催化剂的劣化。 供给装置向NO x催化剂供给还原剂以改变通过NOx催化剂的废气的空燃比，NH 3检测装置检测NOx催化剂下游侧的废气中的NH 3，控制装置调整 一定量的还原剂使得排气的空燃比成为预定的浓空燃比，并且当NH 3检测装置的检测值变为等于1时，确定装置判定为NOx催化剂已劣化 或大于阈值，同时在调节还原剂的量的同时供给还原剂，使得排气的空燃比成为预定的浓空燃比。
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2.发明授权Malfunction detection apparatus and malfunction detection method for an EGR system 有权用于EGR系统的故障检测装置和故障检测方法公开(公告)号：US08346462B2
公开(公告)日：2013-01-01
申请号：US12677194
申请日：2009-08-28
CPC分类号： F02D41/0052 , F02B29/0406 , F02D41/0065 , F02D41/18 , F02M26/05 , F02M26/06 , F02M26/10 , F02M26/15 , F02M26/23 , F02M26/48 , F02M26/49 , Y02T10/47
摘要： A determination is made more simply as to a malfunction of a low pressure EGR device that supplies an EGR gas from a low pressure EGR passage connecting between an exhaust passage at a location downstream of a turbine and an intake passage. Provision is made for a high pressure EGR device that connects between the exhaust passage at a location upstream of the turbine and the intake passage, the low pressure EGR device that connects between the exhaust passage at a location downstream of the turbine and the intake passage, and a detection unit that detects a malfunction of the low pressure EGR device from the degree of opening of a high pressure EGR valve at the time when the EGR gas is supplied from both the high pressure EGR device and the low pressure EGR device, and at the time when the high pressure EGR valve of the high pressure EGR device is controlled in a feedback manner so as to direct an amount of EGR gas in a cylinder toward a target range of the amount of EGR gas, while carrying out open loop control of a low pressure EGR valve of the low pressure EGR device.
摘要翻译： 更简单地确定从连接在涡轮机下游的排气通道和进气通道之间的低压EGR通道供应EGR气体的低压EGR装置的故障。 对于在涡轮机上游的排气通道和进气通道之间连接的高压EGR装置，连接在涡轮机下游的排气通道和进气通道之间的低压EGR装置， 以及检测单元，其从在从高压EGR装置和低压EGR装置供给EGR气体时，从高压EGR阀的开度开始，检测低压EGR装置的故障， 以反馈方式控制高压EGR装置的高压EGR阀的时间，以便将EGR气体中的EGR气体的量朝向EGR气体的量的目标范围引导，同时进行开环控制 低压EGR装置的低压EGR阀。
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公开(公告)号：US20130336841A1
公开(公告)日：2013-12-19
申请号：US14002894
申请日：2011-03-03
IPC分类号： G01N33/00
CPC分类号： G01N33/0054 , F01N3/206 , F01N11/007 , F01N2550/02 , F01N2560/021 , F01N2610/03 , F01N2900/0408 , F01N2900/1402 , Y02T10/47
摘要： The determination of deterioration of a NOx storage reduction catalyst (4) is carried out more accurately. When a reducing agent is supplied from a supply device (5) to the NOx catalyst (4), a first supply of the reducing agent and a second supply of the reducing agent are carried out in a sequential manner by adjusting an amount of the reducing agent in such a manner that an air fuel ratio of the exhaust gas becomes a predetermined rich air fuel ratio, and a determination whether or not the NOx catalyst (4) has deteriorated is made based on a detected value of a detection device (8), which detects NH3 in the exhaust gas at the downstream side of the NOx catalyst (4), after a predetermined period of time has elapsed from the start of the first supply of the reducing agent, and after the start of the second supply of the reducing agent.
摘要翻译： 进一步精确地确定NOx储存还原催化剂（4）的劣化。 当从供给装置（5）向NOx催化剂（4）供给还原剂时，通过调节还原剂的量来顺序地进行还原剂的第一次供给和还原剂的第二供给 以使得排气的空燃比成为规定的浓空燃比，并且基于检测装置（8）的检测值来判定NOx催化剂（4）是否劣化， ，其在从所述还原剂的第一次供给开始经过预定时间后，在所述NOx催化剂（4）的下游侧的废气中检测NH 3，并且在所述第二次供给所述NOx催化剂 还原剂。
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公开(公告)号：US20130330234A1
公开(公告)日：2013-12-12
申请号：US13982611
申请日：2011-03-03
IPC分类号： G01N31/10
CPC分类号： G01N31/10 , F01N3/0842 , F01N3/0871 , F01N3/101 , F01N3/206 , F01N11/00 , F01N2550/02 , F01N2550/03 , F01N2560/021 , F01N2560/026 , F01N2900/1402 , F01N2900/1616 , F01N2900/1621 , F02D41/0235 , F02D41/1444 , F02D41/146 , F02D2041/1468 , Y02T10/22 , Y02T10/47
摘要： The deterioration judgment for an absorption reduction type NOx catalyst is performed quickly and correctly. A catalyst deterioration judging system includes a judging unit which judges that the absorption reduction type NOx catalyst is deteriorated if a detected value of an NH3 detecting unit is not more than a threshold value within a predetermined time immediately after starting supply of a reducing agent from a supply unit while regulating an amount of the reducing agent so that the air-fuel ratio of an exhaust gas is a rich air-fuel ratio by means of a control unit when NOx is absorbed by the absorption reduction type NOx catalyst.
摘要翻译： 吸收还原型NOx催化剂的劣化判断快速正确地进行。 催化剂劣化判定系统包括：判断单元，其判定如果NH 3检测单元的检测值在开始从还原剂的供给开始之后的预定时间内不超过阈值，则吸收还原型NOx催化剂劣化 在通过吸收还原型NOx催化剂吸收NO x时，通过控制单元调节还原剂的量，使得排气的空燃比为浓空燃比。
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公开(公告)号：US20130216436A1
公开(公告)日：2013-08-22
申请号：US13879225
申请日：2010-10-20
IPC分类号： B01D53/94
CPC分类号： G01N33/0037 , B01D53/9495 , F01N3/0814 , F01N3/0842 , F01N11/00 , F01N11/007 , F01N2550/02 , F01N2550/03 , F01N2560/026 , F01N2900/1402 , F01N2900/1614 , F02D41/0235 , G01M15/102 , Y02A50/245 , Y02T10/47
摘要： The deterioration judgment for an absorption reduction type NOx catalyst is performed quickly and correctly. A catalyst deterioration judging system includes a supply unit which supplies a reducing agent, a measuring unit which measures a NOx concentration in an exhaust gas at a position downstream from the catalyst, a control unit which regulates an amount of the reducing agent so that an air-fuel ratio of the exhaust gas is a lean air-fuel ratio when the reducing agent is supplied from the supply unit, and a judging unit which judges deterioration of the catalyst on the basis of the NOx concentration measured by the measuring unit when the amount of the reducing agent is regulated so that the air-fuel ratio of the exhaust gas is the lean air-fuel ratio when NOx is absorbed by the catalyst.
摘要翻译： 吸收还原型NOx催化剂的劣化判断快速正确地进行。 催化剂劣化判定系统包括：供给单元，其供给还原剂，测量单元，其测量在催化剂下游的位置处的排气中的NOx浓度;调节单元，其调节还原剂的量使得空气 当从供给单元供给还原剂时，排气的燃料比是稀空燃比;判定单元，其基于由测量单元测量的NOx浓度来判定催化剂的劣化， 减压剂被调节为使得当NOx被催化剂吸收时，废气的空燃比是稀空燃比。
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6.发明申请MALFUNCTION DETECTION APPARATUS AND MALFUNCTION DETECTION METHOD FOR AN EGR SYSTEM 有权一种EGR系统的故障检测装置和故障检测方法公开(公告)号：US20120095664A1
公开(公告)日：2012-04-19
申请号：US12677194
申请日：2009-08-28
CPC分类号： F02D41/0052 , F02B29/0406 , F02D41/0065 , F02D41/18 , F02M26/05 , F02M26/06 , F02M26/10 , F02M26/15 , F02M26/23 , F02M26/48 , F02M26/49 , Y02T10/47
摘要： A determination is made more simply as to a malfunction of a low pressure EGR device that supplies an EGR gas from a low pressure EGR passage connecting between an exhaust passage at a location downstream of a turbine and an intake passage. Provision is made for a high pressure EGR device that connects between the exhaust passage at a location upstream of the turbine and the intake passage, the low pressure EGR device that connects between the exhaust passage at a location downstream of the turbine and the intake passage, and a detection unit that detects a malfunction of the low pressure EGR device from the degree of opening of a high pressure EGR valve at the time when the EGR gas is supplied from both the high pressure EGR device and the low pressure EGR device, and at the time when the high pressure EGR valve of the high pressure EGR device is controlled in a feedback manner so as to direct an amount of EGR gas in a cylinder toward a target range of the amount of EGR gas, while carrying out open loop control of a low pressure EGR valve of the low pressure EGR device.
摘要翻译： 更简单地确定从连接在涡轮机下游的排气通道和进气通道之间的低压EGR通道供应EGR气体的低压EGR装置的故障。 对于在涡轮机上游的排气通道和进气通道之间连接的高压EGR装置，连接在涡轮机下游的排气通道和进气通道之间的低压EGR装置， 以及检测单元，其从在从高压EGR装置和低压EGR装置供给EGR气体时，从高压EGR阀的开度开始，检测低压EGR装置的故障， 以反馈方式控制高压EGR装置的高压EGR阀的时间，以便将EGR气体中的EGR气体的量朝向EGR气体的量的目标范围引导，同时进行开环控制 该低压EGR装置的低压EGR阀。
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7.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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8.发明申请公开(公告)号：US20130261934A1
公开(公告)日：2013-10-03
申请号：US13871249
申请日：2013-04-26
IPC分类号： F02D41/00
CPC分类号： F02D41/00 , F02D41/0042 , F02D41/0085 , F02D41/1454 , F02D41/2441 , F02D41/2454
摘要： An apparatus for determining an air-fuel ratio imbalance among cylinders based on an output value of an air-fuel ratio sensor, an imbalance determination parameter which becomes larger or smaller as a difference among air-fuel ratios becomes larger, and performs determining an air-fuel ratio imbalance among cylinders based on a result of a comparison between the imbalance determination parameter and a imbalance determination threshold. The determining apparatus calculates a purge correction coefficient which compensates for a change in the air-fuel ratio due to an evaporated fuel gas which is generated in a fuel tank, while the evaporated fuel gas is being introduced into an intake passage, and corrects a fuel injection amount with the purge correction coefficient FPG.
摘要翻译： 一种用于基于空燃比传感器的输出值来确定气缸之间的空燃比不平衡的装置，作为空燃比之差变大或变小的不平衡确定参数变大，并且执行空气 - 基于不平衡确定参数和不平衡确定阈值之间的比较的结果，气缸之间的燃料比不平衡。 确定装置计算净化校正系数，其补偿由于在燃料箱中产生的蒸发燃料气体而引起的空燃比的变化，同时蒸发的燃料气体被引入进气通道中，并且校正燃料 喷射量与净化校正系数FPG。
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公开(公告)号：US08509984B2
公开(公告)日：2013-08-13
申请号：US13146323
申请日：2009-01-28
申请人： Toru Kidokoro , Hiroshi Sawada , Yasushi Iwazaki , Fumihiko Nakamura , Shuntaro Okazaki , Masanori Ishida
发明人： Toru Kidokoro , Hiroshi Sawada , Yasushi Iwazaki , Fumihiko Nakamura , Shuntaro Okazaki , Masanori Ishida
IPC分类号： F02D45/00
CPC分类号： F02D41/0085 , F02D41/1441 , F02D41/1495 , F02D41/2454
摘要： A monitoring apparatus including a catalytic converter, an upstream air-fuel ratio sensor, and a downstream air-fuel ratio sensor; calculates a sub feedback amount to have an air-fuel ratio represented based on an output value of the downstream air-fuel ratio sensor coincide with a stoichiometric air-fuel ratio; and controls an fuel injection amount based on an output value of the upstream air-fuel ratio sensor and the sub feedback amount, in such a manner that an air-fuel ratio of a mixture supplied to an engine coincides with the stoichiometric air-fuel ratio.
摘要翻译： 一种监测装置，包括催化转化器，上游空燃比传感器和下游空燃比传感器; 计算出具有基于下游空燃比传感器的输出值表示的空燃比与副理论空燃比一致的副反馈量; 并且以提供给发动机的混合物的空燃比与理论空燃比一致的方式控制基于上游空燃比传感器的输出值和副反馈量的燃料喷射量 。
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10.发明申请公开(公告)号：US20120173116A1
公开(公告)日：2012-07-05
申请号：US13389082
申请日：2009-08-06
IPC分类号： G01M15/10
CPC分类号： F02D41/008 , F02D41/1456
摘要： An air-fuel ratio imbalance among cylinders determining apparatus according to the present invention obtains an output Vabyfs of an air-fuel ratio sensor disposed at a portion downstream of an exhaust gas aggregated portion of an exhaust gas passage, and obtains a second-order differential value d2AF (a change rate of a change rate of a detected air-fuel ratio abyfs) of a detected air-fuel ratio abyfs represented by the air-fuel ratio sensor output Vabyfs. The imbalance determining apparatus determines that an air-fuel ratio imbalance state among cylinders is occurring when a detected air-fuel ratio second-order differential corresponding value (for example, a second-order differential value d2AF per se) obtained in accordance with the second-order differential value d2AF is larger than a first threshold value.
摘要翻译： 根据本发明的气缸确定装置之间的空燃比不平衡获得设置在排气通道的排气集中部分下游的空燃比传感器的输出Vabyfs，并获得二阶微分 由空燃比传感器输出Vabyfs表示的检测空燃比abyfs的值d2AF（检测空燃比abyfs的变化率的变化率）。 不平衡确定装置确定当根据第二个所获得的检测到的空燃比二阶差分对应值（例如，二阶差分值d2AF本身）发生气缸之间的空燃比不平衡状态时 - 阶微分值d2AF大于第一阈值。
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