公开(公告)号：US20150167521A1

公开(公告)日：2015-06-18

申请号：US14409122

申请日：2012-06-19

申请人： Kenji Sakurai ,  Yuji Miyoshi ,  Toru Kidokoro

发明人： Kenji Sakurai ,  Yuji Miyoshi ,  Toru Kidokoro

IPC分类号： F01N3/20 ,  F01N3/22 ,  B01D53/94

CPC分类号： F01N3/20 ,  B01D53/9495 ,  F01N3/0842 ,  F01N3/0885 ,  F01N3/2066 ,  F01N3/22 ,  F01N9/00 ,  F01N13/009 ,  F01N2610/02 ,  F02D41/025 ,  F02D41/028 ,  F02D2200/0808 ,  F02D2200/0811 ,  Y02A50/2325 ,  Y02T10/24 ,  Y02T10/47

摘要： An exhaust gas purification catalyst is recovered from the sulfur poisoning more appropriately. For this purpose, an exhaust gas purification apparatus for an internal combustion engine selectively executes first control in which an air-fuel ratio of an exhaust gas allowed to flow into an exhaust gas purification catalyst is set to be not more than a theoretical air-fuel ratio to remove a sulfur component from the exhaust gas purification catalyst; and second control in which the air-fuel ratio of the exhaust gas allowed to flow into the exhaust gas purification catalyst is set to an air-fuel ratio that is lower than the air-fuel ratio of the exhaust gas set in the first control to remove the sulfur component from the exhaust gas purification catalyst; wherein the exhaust gas purification apparatus for the internal combustion engine comprises a control unit which executes any one of the first control and the second control on the basis of at least one of purification performance of the exhaust gas purification catalyst, a travel distance of a vehicle that carries the internal combustion engine, and a number of times of removal of the sulfur component from the exhaust gas purification catalyst.

摘要翻译： 更适当地从硫中毒中回收废气净化催化剂。 为此，内燃机的废气净化装置选择性地执行第一控制，其中允许流入排气净化催化剂的废气的空燃比被设定为不大于理论空燃比 以从废气净化催化剂中除去硫成分; 并且允许流入排气净化催化剂的废气的空燃比被设定为低于设定在第一控制中的排气的空燃比的空燃比的第二控制， 从废气净化催化剂中除去硫成分; 其特征在于，所述内燃机的废气净化装置具有控制单元，其基于所述排气净化催化剂的净化性能，车辆的行驶距离，行驶距离，所述第一控制和所述第二控制中的至少一个， 其承载内燃机，并且从废气净化催化剂中多次除去硫成分。

公开(公告)号：US20140186220A1

公开(公告)日：2014-07-03

申请号：US14128176

申请日：2011-09-06

申请人： Kenji Sakurai ,  Toru Kidokoro ,  Yasuyuki Irisawa ,  Tuyoshi Obuchi

发明人： Kenji Sakurai ,  Toru Kidokoro ,  Yasuyuki Irisawa ,  Tuyoshi Obuchi

IPC分类号： F01N3/20

CPC分类号： F01N3/2053 ,  F01N3/0814 ,  F01N3/0885 ,  F01N3/101 ,  F01N3/2066 ,  F01N3/2073 ,  F01N11/00 ,  F01N13/009 ,  F01N2430/085 ,  F01N2550/02 ,  F01N2550/03 ,  F01N2560/06 ,  F01N2560/14 ,  F01N2610/03 ,  F01N2900/16 ,  Y02T10/22 ,  Y02T10/24 ,  Y02T10/47

摘要： In cases where an NOx selective reduction catalyst is provided at a location downstream of an NOx storage reduction catalyst, NOx purification performance in an exhaust gas purification apparatus as a whole is maintained, irrespective of deterioration of the NOx storage reduction catalyst. For this purpose, the reduction of NOx in the NOx storage reduction catalyst is promoted more when the degree of deterioration of the NOx storage reduction catalyst or the NOx selective reduction catalyst is low than when it is high, and the reduction of NOx in the NOx selective reduction catalyst is promoted more when the degree of deterioration of the NOx storage reduction catalyst or the NOx selective reduction catalyst is high than when it is low.

摘要翻译： 在NOx吸留还原催化剂的下游位置设置有NOx选择还原催化剂的情况下，与NOx吸留还原催化剂的劣化无关地维持排气净化装置的NOx净化性能。 为此，当NOx储存还原催化剂或NOx选择还原催化剂的劣化程度低于NOx时，NOx吸收还原催化剂中的NOx的还原更多，并且NOx的还原 当NOx存储还原催化剂或NO x选择还原催化剂的劣化程度高于低于低浓度催化剂时，选择还原催化剂被更多地促进。

公开(公告)号：US20130152552A1

公开(公告)日：2013-06-20

申请号：US13818394

申请日：2010-08-23

申请人： Kenji Sakurai ,  Toru Kidokoro ,  Tsuyoski Obuchi ,  Youichi Katumata

发明人： Kenji Sakurai ,  Toru Kidokoro ,  Tsuyoski Obuchi ,  Youichi Katumata

IPC分类号： F01N3/20

CPC分类号： F01N3/20 ,  F01N3/0814 ,  F01N3/0842 ,  F01N3/0885 ,  F01N3/101 ,  F01N3/2066 ,  F01N11/00 ,  F01N13/009 ,  F01N13/0097 ,  F01N2430/06 ,  F01N2550/02 ,  F02D41/008 ,  F02D41/025 ,  F02D41/028 ,  Y02T10/22 ,  Y02T10/24 ,  Y02T10/47

摘要： An exhaust emission control device of an internal combustion engine capable of effectively restoring an NSR catalyst from sulfur poisoning while suppressing reduction of fuel efficiency and worsening of emission, in the internal combustion engine including the NSR catalyst and SCR. An exhaust emission control device of an internal combustion engine capable of a lean burn operation includes a TWC that is placed in an exhaust passage of the internal combustion engine and supports a precious metal in an inside thereof, an NSR catalyst that is placed at an exhaust downstream side of the TWC and supports a precious metal and a base in an inside thereof, and an SCR that is placed in the exhaust passage at a downstream side of the NSR catalyst, wherein the NSR catalyst is placed in a region in which a bed temperature at a time of an operation thereof becomes 500° C. to 750° C. The TWC and the NSR catalyst are preferably configured as an SC of a tandem structure in which the TWC and the NSR catalyst are integrated by being serially arranged.

摘要翻译： 在包含NSR催化剂和SCR的内燃机中，能够有效地将NSR催化剂从硫中毒还原，同时抑制燃料效率的降低和排放恶化的内燃机废气排放控制装置。 能够进行稀薄燃烧操作的内燃机的废气排放控制装置包括放置在内燃机的排气通路内并在其内部支承贵金属的TWC，放置在排气口的NSR催化剂 TWC的下游侧，并且在其内部支撑贵金属和碱，以及在NSR催化剂的下游侧配置在排气通路中的SCR，其中，将NSR催化剂置于床 其操作时的温度为500℃〜750℃。TWC和NSR催化剂优选构成串联结构的SC，其中TWC和NSR催化剂通过串联排列而一体化。

公开(公告)号：US20140003999A1

公开(公告)日：2014-01-02

申请号：US14006250

申请日：2011-03-22

申请人： Yoshitaka Nakamura ,  Hirotaka Saito ,  Toru Kidokoro ,  Hiroshi Sawada ,  Kenji Sakurai

发明人： Yoshitaka Nakamura ,  Hirotaka Saito ,  Toru Kidokoro ,  Hiroshi Sawada ,  Kenji Sakurai

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。

公开(公告)号：US08485015B2

公开(公告)日：2013-07-16

申请号：US13253713

申请日：2011-10-05

申请人： Kenji Sakurai ,  Toru Kidokoro

发明人： Kenji Sakurai ,  Toru Kidokoro

IPC分类号： G01N37/00

CPC分类号： G01N33/007 ,  F01N3/0842 ,  F01N3/106 ,  F01N3/2066 ,  F02D41/1463 ,  F02D41/222 ,  F02D2041/1431 ,  Y02T10/22 ,  Y02T10/40

摘要： A NOX sensor degradation detection system includes: a three-way catalyst disposed in an exhaust passageway of an internal combustion engine; a selective reduction catalyst disposed in the exhaust passageway downstream of the three-way catalyst; a NOX sensor disposed in the exhaust passageway downstream of the selective reduction catalyst; and a controller configured to execute a rich-shift process that is a process for causing air/fuel ratio of exhaust gas that flows into the three-way catalyst to become rich, and to determine that the NOX sensor has degraded on a condition that a measurement value from the NOX sensor does not reach nor exceed a threshold value within a prescribed time that follows start of the rich-shift process. A degradation detection method for use in the system is also provided.

摘要翻译： NOX传感器劣化检测系统包括：设置在内燃机的排气通道中的三元催化剂; 选择性还原催化剂，其设置在所述三元催化剂下游的排气通路中; 设置在选择还原催化剂下游的排气通道中的NOX传感器; 以及控制器，被配置为执行作为使流入所述三元催化剂的排气的空气/燃料比变浓的处理的富变换处理，并且判定为在所述三氧化碳 来自NOX传感器的测量值在富移位处理开始之后的规定时间内不达到也不超过阈值。 还提供了一种用于系统中的劣化检测方法。

公开(公告)号：US09010093B2

公开(公告)日：2015-04-21

申请号：US14237239

申请日：2011-09-06

申请人： Kenji Sakurai ,  Toru Kidokoro ,  Yasuyuki Irisawa ,  Yuji Miyoshi

发明人： Kenji Sakurai ,  Toru Kidokoro ,  Yasuyuki Irisawa ,  Yuji Miyoshi

IPC分类号： F01N3/00 ,  F01N3/18 ,  F01N3/08 ,  F01N3/20 ,  F01N13/00 ,  F01N3/10

CPC分类号： F01N3/18 ,  F01N3/0842 ,  F01N3/085 ,  F01N3/0885 ,  F01N3/101 ,  F01N3/2073 ,  F01N13/009 ,  F01N2550/03 ,  F01N2570/24 ,  F01N2610/02 ,  F02D41/024 ,  F02D41/028 ,  Y02T10/20 ,  Y02T10/22 ,  Y02T10/24 ,  Y02T10/26

摘要： In cases where at the upstream side of an NOx selective reduction catalyst there is provided another catalyst, sulfur poisoning of both the catalysts is recovered in an appropriate manner. To this end, provision is made for an NH3 generation catalyst arranged in an exhaust passage of an internal combustion engine for generating NH3, the NOx selective reduction catalyst arranged in the exhaust passage at a location downstream of the NH3 generation catalyst for reducing NOx in a selective manner, an upstream side recovery unit to recover sulfur poisoning of the NH3 generation catalyst, and a downstream side recovery unit to recover sulfur poisoning of the NOx selective reduction catalyst after the sulfur poisoning of the NH3 generation catalyst has been recovered by the upstream side recovery unit.

摘要翻译： 在NOx选择还原催化剂的上游侧设置有另一种催化剂的情况下，以适当的方式回收两种催化剂的硫中毒。 为此，提供了排列在用于产生NH 3的内燃机的排气通道中的NH 3代催化剂，该NOx选择还原催化剂在NH 3代催化剂的下游位置排列在排气通道中，用于还原NOx 选择性地，用于回收NH 3代催化剂的硫中毒的上游侧回收单元，以及在NH 3代催化剂的硫中毒已经被上游侧回收了用于回收NOx选择还原催化剂的硫中毒的下游侧回收单元 恢复单位。

公开(公告)号：US20130336841A1

公开(公告)日：2013-12-19

申请号：US14002894

申请日：2011-03-03

申请人： Yoshitaka Nakamura ,  Hirotaka Saito ,  Toru Kidokoro ,  Hiroshi Sawada ,  Kenji Sakurai

发明人： Yoshitaka Nakamura ,  Hirotaka Saito ,  Toru Kidokoro ,  Hiroshi Sawada ,  Kenji Sakurai

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。

公开(公告)号：US09169758B2

公开(公告)日：2015-10-27

申请号：US14111428

申请日：2011-04-13

申请人： Yusuke Nakayama ,  Toru Kidokoro ,  Kenji Sakurai

发明人： Yusuke Nakayama ,  Toru Kidokoro ,  Kenji Sakurai

IPC分类号： F01N3/18 ,  F02D19/10 ,  F01N13/00 ,  F01N3/08 ,  F01N3/10

CPC分类号： F01N3/18 ,  F01N3/0814 ,  F01N3/0842 ,  F01N3/101 ,  F01N13/009 ,  F02D19/105 ,  Y02T10/22 ,  Y02T10/36

摘要： The present invention has its object to provide a technique which can eliminate HC poisoning of an exhaust gas purification catalyst in a suitable manner in a fuel injection control system of an internal combustion engine which can use a liquid fuel and a gas fuel. In order to achieve this object, the present invention is constructed such that in the fuel injection control system of an internal combustion engine capable of using a liquid fuel and a gas fuel, when HC poisoning of the exhaust gas purification catalyst has occurred, HC poisoning is intended to be eliminated by causing the internal combustion engine to operate by the use of the gas fuel if the temperature of the exhaust gas purification catalyst is less than a specified value, whereas the elimination of HC poisoning is intended by causing the internal combustion engine to operate by the use of the liquid fuel if the temperature of an exhaust gas purification device is not less than the specified value.

摘要翻译： 本发明的目的是提供一种能够以能够使用液体燃料和气体燃料的内燃机的燃料喷射控制系统中适当的方式消除排气净化催化剂的HC中毒的技术。 为了实现该目的，本发明构成为在能够使用液体燃料和气体燃料的内燃机的燃料喷射控制系统中，在已经发生排气净化催化剂的HC中毒的情况下，HC中毒 如果排气净化催化剂的温度小于规定值，则通过使用燃气燃料来使内燃机运转，而排除HC中毒的目的是通过使内燃机 如果废气净化装置的温度不小于规定值，则通过使用液体燃料进行操作。

公开(公告)号：US20140190150A1

公开(公告)日：2014-07-10

申请号：US14237239

申请日：2011-09-06

申请人： Kenji Sakurai ,  Toru Kidokoro ,  Yasuyuki Irisawa ,  Yuji Miyoshi

发明人： Kenji Sakurai ,  Toru Kidokoro ,  Yasuyuki Irisawa ,  Yuji Miyoshi

IPC分类号： F01N3/18

CPC分类号： F01N3/18 ,  F01N3/0842 ,  F01N3/085 ,  F01N3/0885 ,  F01N3/101 ,  F01N3/2073 ,  F01N13/009 ,  F01N2550/03 ,  F01N2570/24 ,  F01N2610/02 ,  F02D41/024 ,  F02D41/028 ,  Y02T10/20 ,  Y02T10/22 ,  Y02T10/24 ,  Y02T10/26

摘要： In cases where at the upstream side of an NOx selective reduction catalyst there is provided another catalyst, sulfur poisoning of both the catalysts is recovered in an appropriate manner. To this end, provision is made for an NH3 generation catalyst arranged in an exhaust passage of an internal combustion engine for generating NH3, the NOx selective reduction catalyst arranged in the exhaust passage at a location downstream of the NH3 generation catalyst for reducing NOx in a selective manner, an upstream side recovery unit to recover sulfur poisoning of the NH3 generation catalyst, and a downstream side recovery unit to recover sulfur poisoning of the NOx selective reduction catalyst after the sulfur poisoning of the NH3 generation catalyst has been recovered by the upstream side recovery unit.

摘要翻译： 在NOx选择还原催化剂的上游侧设置有另一种催化剂的情况下，以适当的方式回收两种催化剂的硫中毒。 为此，提供了排列在用于产生NH 3的内燃机的排气通道中的NH 3代催化剂，该NOx选择还原催化剂在NH 3代催化剂的下游位置排列在排气通道中，用于还原NOx 选择性地，用于回收NH 3代催化剂的硫中毒的上游侧回收单元，以及在NH 3代催化剂的硫中毒已经被上游侧回收了用于回收NOx选择还原催化剂的硫中毒的下游侧回收单元 恢复单位。

公开(公告)号：US20140023561A1

公开(公告)日：2014-01-23

申请号：US14002268

申请日：2011-04-15

申请人： Kenji Sakurai ,  Toru Kidokoro

发明人： Kenji Sakurai ,  Toru Kidokoro

IPC分类号： F01N3/20

CPC分类号： F01N3/2066 ,  B01D53/9409 ,  B01D53/9477 ,  B01D2255/1021 ,  B01D2255/1023 ,  B01D2255/1025 ,  B01D2255/2092 ,  B01D2255/91 ,  F01N3/0814 ,  F01N3/0842 ,  F01N13/009 ,  F01N13/0093 ,  F01N13/0097 ,  F01N2330/60 ,  F01N2510/0682 ,  Y02T10/22 ,  Y02T10/24

摘要： The exhaust cleaner for internal combustion engine is equipped with NOx storage reduction catalyst (161, 162) which is disposed in exhaust passage of an internal combustion engine and which absorb and reduce the NOx contained in exhaust gas. The NOx storage reduction catalyst (161, 162) each include a coating layer that has been formed on the inner wall of cells through which the exhaust passage, the coating layer having the catalytic function. The coating layers have been formed so that the thickness of the coating layer of the NOx storage reduction catalyst (161) located upstream in the flow of the exhaust gas is smaller than the thickness of the coating layer of the NOx storage reduction catalyst (162) located downstream. Due to this configuration, the NOx storage reduction ccatalyst (161, 162) are inhibit from being poisoned by sulfur and high NOx removal percentage is maintained.

摘要翻译： 用于内燃机的排气净化器配备有NOx吸留还原催化剂（161,162），其设置在内燃机的排气通道中并吸收和还原废气中所含的NOx。 NOx储存还原催化剂（161,162）各自包括已经形成在排气通道，具有催化功能的涂层的单元的内壁上的涂层。 已经形成涂层，使得位于排气流中上游的NOx存储还原催化剂（161）的涂层的厚度小于NOx储存还原催化剂（162）的涂层厚度， 位于下游。 由于这种构造，可以防止NOx储存还原催化剂（161,162）被硫中毒，并且维持高的NOx去除率。