公开(公告)号：US08187436B2

公开(公告)日：2012-05-29

申请号：US11603018

申请日：2006-11-22

申请人： Seiji Oya ,  Tomohiro Wakazono ,  Koji Shiotani ,  Tomonori Kondo ,  Mineji Nasu ,  Hiroshi Kubota ,  Kazuo Yanada ,  Koichi Awano

发明人： Seiji Oya ,  Tomohiro Wakazono ,  Koji Shiotani ,  Tomonori Kondo ,  Mineji Nasu ,  Hiroshi Kubota ,  Kazuo Yanada ,  Koichi Awano

IPC分类号： G01N27/409 ,  G01N27/417

CPC分类号： G01N33/0037 ,  G01N27/4175 ,  Y02A50/245

摘要： A gas sensor controller 190 stops an operation of pumping in or out oxygen that is being performed by a first pump cell 111 in a state that the oxygen concentration (oxygen partial pressure) of a gas to be measured is equal to a status judgment reference value (20%). The gas sensor controller 190 calculates an oxygen pressure in a second measurement chamber 161 on the basis of a second pump current Ip2. If the oxygen pressure in the second measurement chamber 161 is equal to a deterioration judgment reference value, the gas sensor controller 190 judges that the second pump cell 113 is in a normal state. If the oxygen pressure in the second measurement chamber 161 is different from the deterioration judgment reference value, the gas sensor controller 190 judges that the second pump cell 113 is in a deteriorated state.

摘要翻译： 在待测气体的氧浓度（氧分压）等于状态判定基准值的状态下，气体传感器控制器190停止泵入或输出由第一泵电池111进行的氧的操作 （20％）。 气体传感器控制器190基于第二泵电流Ip2计算第二测量室161中的氧气压力。 如果第二测量室161中的氧气压力等于劣化判定基准值，则气体传感器控制器190判断第二泵室113处于正常状态。 如果第二测量室161中的氧气压力与劣化判定基准值不同，则气体传感器控制器190判断第二泵室113处于劣化状态。

公开(公告)号：US20110099985A1

公开(公告)日：2011-05-05

申请号：US12917179

申请日：2010-11-01

申请人： Yuji YASUI ,  Kazuo YANADA

发明人： Yuji YASUI ,  Kazuo YANADA

IPC分类号： F01N3/10

CPC分类号： F01N3/208 ,  F01N2560/021 ,  F01N2900/0411 ,  F01N2900/1402 ,  F01N2900/1616 ,  F01N2900/1622 ,  Y02T10/24

摘要： An exhaust purification system is provided that can continuously maintain a NOx purification rate to be high while suppressing the occurrence of ammonia slip. The exhaust purification system includes a slip determination portion 34 that determines the occurrence of ammonia slip based on an output value NH3CONS of an ammonia sensor 26. A reference injection amount calculating portion 31 calculates a reference injection amount GUREA—BS based on a parameter correlating to an operating state of an engine. A switching injection amount calculating portion 32 decreases in amount a urea injection amount GUREA by setting a switching injection amount GUREA—SW to a negative value in response to having determined that ammonia slip has occurred, and increases in amount the injection amount GUREA by setting the switching injection amount GUREA—SW to a positive value in response to a storage amount estimated value STUREA having fallen below a predetermined switch storage amount STUREA—SW.

摘要翻译： 提供了能够在抑制氨滑移的发生的同时，将NOx净化率连续地维持为高的排气净化系统。 排气净化系统包括：滑移判定部34，其根据氨传感器26的输出值NH3CONS确定氨的滑移发生。基准喷射量计算部31基于与氨传感器26的输出值NH3CONS相关的参数，计算基准喷射量GUREA-BS 发动机的运行状态。 切换喷射量计算部32响应于已经确定发生氨滑移而将切换喷射量GUREA-SW设定为负值，从而减少尿素喷射量GUREA的量，并且通过将喷射量GUREA设定为 响应于已经低于预定开关存储量STUREA-SW的存储量估计值STUREA，切换喷射量GUREA-SW变为正值。

公开(公告)号：US08813477B2

公开(公告)日：2014-08-26

申请号：US12917179

申请日：2010-11-01

申请人： Yuji Yasui ,  Kazuo Yanada

发明人： Yuji Yasui ,  Kazuo Yanada

IPC分类号： F01N3/00 ,  F01N3/10 ,  F01N3/20

CPC分类号： F01N3/208 ,  F01N2560/021 ,  F01N2900/0411 ,  F01N2900/1402 ,  F01N2900/1616 ,  F01N2900/1622 ,  Y02T10/24

摘要： An exhaust purification system is provided that can continuously maintain a NOx purification rate to be high while suppressing the occurrence of ammonia slip. The exhaust purification system includes a slip determination portion 34 that determines the occurrence of ammonia slip based on an output value NH3CONS of an ammonia sensor 26. A reference injection amount calculating portion 31 calculates a reference injection amount GUREA—BS based on a parameter correlating to an operating state of an engine. A switching injection amount calculating portion 32 decreases in amount a urea injection amount GUREA by setting a switching injection amount GUREA—SW to a negative value in response to having determined that ammonia slip has occurred, and increases in amount the injection amount GUREA by setting the switching injection amount GUREA—SW to a positive value in response to a storage amount estimated value STUREA having fallen below a predetermined switch storage amount STUREA—SW.

摘要翻译： 提供了能够在抑制氨滑移的发生的同时，将NOx净化率连续地维持为高的排气净化系统。 排气净化系统包括：滑移判定部34，其根据氨传感器26的输出值NH3CONS确定氨的滑移发生。基准喷射量计算部31基于与氨传感器26的输出值NH3CONS相关的参数，计算基准喷射量GUREA-BS 发动机的运行状态。 切换喷射量计算部32响应于已经确定发生氨滑移而将切换喷射量GUREA-SW设定为负值，从而减少尿素喷射量GUREA的量，并且通过将喷射量GUREA设定为 响应于已经低于预定开关存储量STUREA-SW的存储量估计值STUREA，切换喷射量GUREA-SW变为正值。

公开(公告)号：US07972488B2

公开(公告)日：2011-07-05

申请号：US11602983

申请日：2006-11-22

申请人： Seiji Oya ,  Tomohiro Wakazono ,  Koji Shiotani ,  Tomonori Kondo ,  Mineji Nasu ,  Hiroshi Kubota ,  Kazuo Yanada ,  Koichi Awano

发明人： Seiji Oya ,  Tomohiro Wakazono ,  Koji Shiotani ,  Tomonori Kondo ,  Mineji Nasu ,  Hiroshi Kubota ,  Kazuo Yanada ,  Koichi Awano

IPC分类号： G01N27/417

CPC分类号： G01N33/0037 ,  G01N27/4175 ,  Y02A50/245

摘要： In a sensor diagnosis process, a controller for controlling an NOx gas sensor performs processing of changing the oxygen partial pressure in a second measurement chamber by changing the oxygen partial pressure in a first measurement chamber (S190), processing of detecting a current flowing through a second pump cell before the change of the oxygen partial pressure (S180), and processing of detecting a current flowing through the second pump cell after the change of the oxygen partial pressure (S230). Furthermore, the controller performs processing of judging whether or not the ratio between the current values detected by the respective current detecting unit falls within an allowable range, judging that the second pump cell 113 is in a normal state if the ratio between the current values falls within the allowable range, and judging that the second pump cell 113 is in a deteriorated state if the ratio between the current values is out of the allowable range (S240 and S250).

摘要翻译： 在传感器诊断过程中，用于控制NOx气体传感器的控制器执行通过改变第一测量室中的氧分压来改变第二测量室中的氧分压的处理（S190），检测流过 在氧分压变化之前的第二泵电池（S180），以及在氧分压变化之后检测流过第二泵电池的电流的处理（S230）。 此外，控制器执行判断由各个电流检测单元检测的电流值之间的比率是否落在容许范围内的判断处理，如果当前值之间的比率下降，则判定第二泵浦单元113处于正常状态 并且如果当前值之间的比值超出允许范围（S240和S250），则判定第二泵室113处于劣化状态。

公开(公告)号：US20070119708A1

公开(公告)日：2007-05-31

申请号：US11602983

申请日：2006-11-22

申请人： Seiji Oya ,  Tomohiro Wakazono ,  Koji Shiotani ,  Tomonori Kondo ,  Mineji Nasu ,  Hiroshi Kubota ,  Kazuo Yanada ,  Koichi Awano

发明人： Seiji Oya ,  Tomohiro Wakazono ,  Koji Shiotani ,  Tomonori Kondo ,  Mineji Nasu ,  Hiroshi Kubota ,  Kazuo Yanada ,  Koichi Awano

IPC分类号： G01N27/26 ,  G01F1/64

CPC分类号： G01N33/0037 ,  G01N27/4175 ,  Y02A50/245

摘要： In a sensor diagnosis process, a controller for controlling an NOx gas sensor performs processing of changing the oxygen partial pressure in a second measurement chamber by changing the oxygen partial pressure in a first measurement chamber (S190), processing of detecting a current flowing through a second pump cell before the change of the oxygen partial pressure (S180), and processing of detecting a current flowing through the second pump cell after the change of the oxygen partial pressure (S230). Furthermore, the controller performs processing of judging whether or not the ratio between the current values detected by the respective current detecting unit falls within an allowable range, judging that the second pump cell 113 is in a normal state if the ratio between the current values falls within the allowable range, and judging that the second pump cell 113 is in a deteriorated state if the ratio between the current values is out of the allowable range (S240 and S250).

摘要翻译： 在传感器诊断过程中，用于控制NOx气体传感器的控制器通过改变第一测量室中的氧分压来执行改变第二测量室中的氧分压的处理（S 190），检测流过的电流的处理 在氧分压变化之前的第二泵电池（S1080），以及在氧分压变化之后检测流过第二泵电池的电流的处理（S 230）。 此外，控制器执行判断由各个电流检测单元检测的电流值之间的比率是否落在容许范围内的判断处理，如果当前值之间的比率下降，则判定第二泵浦单元113处于正常状态 在容许范围内，如果电流值之间的比例在允许范围之外，则判定第二泵电池113处于劣化状态（S 240和S 250）。

公开(公告)号：US20070119709A1

公开(公告)日：2007-05-31

申请号：US11603018

申请日：2006-11-22

申请人： Seiji Oya ,  Tomohiro Wakazono ,  Koji Shiotani ,  Tomonori Kondo ,  Mineji Nasu ,  Hiroshi Kubota ,  Kazuo Yanada ,  Koichi Awano

发明人： Seiji Oya ,  Tomohiro Wakazono ,  Koji Shiotani ,  Tomonori Kondo ,  Mineji Nasu ,  Hiroshi Kubota ,  Kazuo Yanada ,  Koichi Awano

IPC分类号： G01N27/26

CPC分类号： G01N33/0037 ,  G01N27/4175 ,  Y02A50/245

摘要： A gas sensor controller 190 stops an operation of pumping in or out oxygen that is being performed by a first pump cell 111 in a state that the oxygen concentration (oxygen partial pressure) of a gas to be measured is equal to a status judgment reference value (20%). The gas sensor controller 190 calculates an oxygen pressure in a second measurement chamber 161 on the basis of a second pump current Ip2. If the oxygen pressure in the second measurement chamber 161 is equal to a deterioration judgment reference value, the gas sensor controller 190 judges that the second pump cell 113 is in a normal state. If the oxygen pressure in the second measurement chamber 161 is different from the deterioration judgment reference value, the gas sensor controller 190 judges that the second pump cell 113 is in a deteriorated state.

摘要翻译： 在待测气体的氧浓度（氧分压）等于状态判定基准值的状态下，气体传感器控制器190停止泵入或输出由第一泵电池111进行的氧的操作 （20％）。 气体传感器控制器190基于第二泵电流Ip 2计算第二测量室161中的氧气压力。 如果第二测量室161中的氧气压力等于劣化判定基准值，则气体传感器控制器190判断第二泵室113处于正常状态。 如果第二测量室161中的氧气压力与劣化判定基准值不同，则气体传感器控制器190判断第二泵室113处于劣化状态。