公开(公告)号：US20050217244A1

公开(公告)日：2005-10-06

申请号：US11133215

申请日：2005-05-20

申请人： Akira Kamoto ,  Toshinari Nagai ,  Yasuhiro Oi ,  Noriyasu Adachi ,  Koji Ide ,  Daisuke Kobayashi ,  Shuntaro Okazaki ,  Naoto Kato ,  Takahiro Uchida

发明人： Akira Kamoto ,  Toshinari Nagai ,  Yasuhiro Oi ,  Noriyasu Adachi ,  Koji Ide ,  Daisuke Kobayashi ,  Shuntaro Okazaki ,  Naoto Kato ,  Takahiro Uchida

IPC分类号： F02D45/00 ,  F01N3/00 ,  F01N3/20 ,  F01N3/24 ,  F01N7/00 ,  F01N11/00 ,  F02D41/14

CPC分类号： F01N3/101 ,  F01N11/00 ,  F01N11/007 ,  F01N13/009 ,  F01N13/0093 ,  F01N2550/02 ,  F02D2200/0816 ,  Y02T10/22 ,  Y02T10/47

摘要： A catalyst degradation determining method includes the steps of: controlling an upstream-of-catalyst air-fuel ratio occurring upstream of a first catalyst to an air-fuel ratio that is rich of a stoichiometric air-fuel ratio so that first and second catalysts store oxygen up to a maximum storage amount of oxygen. The method then includes the steps of controlling the upstream-of-catalyst air-fuel ratio to a first lean air-fuel ratio until an output of a downstream-of-first-catalyst sensor indicates a lean air-fuel ratio, and then to a second lean air-fuel ratio and that has a value that is determined in accordance with an oxidizing-reducing capability index value, until a time point when an output of a downstream-of-second-catalyst air-fuel ratio sensor indicates an air-fuel ratio that is lean.

公开(公告)号：US06915628B2

公开(公告)日：2005-07-12

申请号：US10606375

申请日：2003-06-26

申请人： Akira Kamoto ,  Toshinari Nagai ,  Yasuhiro Oi ,  Noriyasu Adachi ,  Koji Ide ,  Daisuke Kobayashi ,  Shuntaro Okazaki ,  Naoto Kato ,  Takahiro Uchida

发明人： Akira Kamoto ,  Toshinari Nagai ,  Yasuhiro Oi ,  Noriyasu Adachi ,  Koji Ide ,  Daisuke Kobayashi ,  Shuntaro Okazaki ,  Naoto Kato ,  Takahiro Uchida

IPC分类号： F02D45/00 ,  F01N3/00 ,  F01N3/20 ,  F01N3/24 ,  F01N7/00 ,  F01N11/00 ,  F02D41/14

CPC分类号： F01N3/101 ,  F01N11/00 ,  F01N11/007 ,  F01N13/009 ,  F01N13/0093 ,  F01N2550/02 ,  F02D2200/0816 ,  Y02T10/22 ,  Y02T10/47

摘要： A catalyst degradation determining method includes the steps of: controlling an upstream-of-catalyst air-fuel ratio occurring upstream of a first catalyst to an air-fuel ratio that is rich of a stoichiometric air-fuel ratio so that first and second catalysts store oxygen up to a maximum storage amount of oxygen. The method then includes the steps of controlling the upstream-of-catalyst air-fuel ratio to a first lean air-fuel ratio until an output of a downstream-of-first-catalyst sensor indicates a lean air-fuel ratio, and then to a second lean air-fuel ratio and that has a value that is determined in accordance with an oxidizing-reducing capability index value, until a time point when an output of a downstream-of-second-catalyst air-fuel ratio sensor indicates an air-fuel ratio that is lean.

公开(公告)号：US07117665B2

公开(公告)日：2006-10-10

申请号：US11133215

申请日：2005-05-20

申请人： Akira Kamoto ,  Toshinari Nagai ,  Yasuhiro Oi ,  Noriyasu Adachi ,  Koji Ide ,  Daisuke Kobayashi ,  Shuntaro Okazaki ,  Naoto Kato ,  Takahiro Uchida

发明人： Akira Kamoto ,  Toshinari Nagai ,  Yasuhiro Oi ,  Noriyasu Adachi ,  Koji Ide ,  Daisuke Kobayashi ,  Shuntaro Okazaki ,  Naoto Kato ,  Takahiro Uchida

IPC分类号： F01N3/00

CPC分类号： F01N3/101 ,  F01N11/00 ,  F01N11/007 ,  F01N13/009 ,  F01N13/0093 ,  F01N2550/02 ,  F02D2200/0816 ,  Y02T10/22 ,  Y02T10/47

摘要： A catalyst degradation determining method includes the steps of: controlling an upstream-of-catalyst air-fuel ratio occurring upstream of a first catalyst to an air-fuel ratio that is rich of a stoichiometric air-fuel ratio so that first and second catalysts store oxygen up to a maximum storage amount of oxygen. The method then includes the steps of controlling the upstream-of-catalyst air-fuel ratio to a first lean air-fuel ratio until an output of a downstream-of-first-catalyst sensor indicates a lean air-fuel ratio, and then to a second lean air-fuel ratio and that has a value that is determined in accordance with an oxidizing-reducing capability index value, until a time point when an output of a downstream-of-second-catalyst air-fuel ratio sensor indicates an air-fuel ratio that is lean.

摘要翻译： 一种催化剂降解测定方法，包括以下步骤：将发生在第一催化剂上游的催化剂上游空燃比控制为具有理论空燃比的空燃比，使第一催化剂和第二催化剂储存 氧气达到最大储存量的氧气。 该方法包括以下步骤：将催化剂上游空燃比控制到第一稀空燃比，直到第一催化剂下游传感器的输出表示稀空燃比，然后至 第二稀空燃比，其具有根据氧化还原能力指标值确定的值，直到下游二催化剂空燃比传感器的输出表示空气 - 精益比。

公开(公告)号：US08234853B2

公开(公告)日：2012-08-07

申请号：US11133205

申请日：2005-05-20

申请人： Akira Kamoto ,  Toshinari Nagai ,  Yasuhiro Oi ,  Noriyasu Adachi ,  Koji Ide ,  Daisuke Kobayashi ,  Shuntaro Okazaki ,  Naoto Kato ,  Takahiro Uchida

发明人： Akira Kamoto ,  Toshinari Nagai ,  Yasuhiro Oi ,  Noriyasu Adachi ,  Koji Ide ,  Daisuke Kobayashi ,  Shuntaro Okazaki ,  Naoto Kato ,  Takahiro Uchida

IPC分类号： F01N3/00

CPC分类号： F01N3/101 ,  F01N11/00 ,  F01N11/007 ,  F01N13/009 ,  F01N13/0093 ,  F01N2550/02 ,  F02D2200/0816 ,  Y02T10/22 ,  Y02T10/47

摘要： A catalyst degradation determining method includes the steps of: controlling an upstream-of-catalyst air-fuel ratio occurring upstream of a first catalyst to an air-fuel ratio that is rich of a stoichiometric air-fuel ratio so that first and second catalysts store oxygen up to a maximum storage amount of oxygen. The method then includes the steps of controlling the upstream-of-catalyst air-fuel ratio to a first lean air-fuel ratio until an output of a downstream-of-first-catalyst sensor indicates a lean air-fuel ratio, and then to a second lean air-fuel ratio and that has a value that is determined in accordance with an oxidizing-reducing capability index value, until a time point when an output of a downstream-of-second-catalyst air-fuel ratio sensor indicates an air-fuel ratio that is lean.

摘要翻译： 一种催化剂降解测定方法，包括以下步骤：将发生在第一催化剂上游的催化剂上游空燃比控制为具有理论空燃比的空燃比，使第一催化剂和第二催化剂储存 氧气达到最大储存量的氧气。 该方法包括以下步骤：将催化剂上游空燃比控制到第一稀空燃比，直到第一催化剂下游传感器的输出表示稀空燃比，然后至 第二稀空燃比，其具有根据氧化还原能力指标值确定的值，直到下游二催化剂空燃比传感器的输出表示空气 - 精益比。

公开(公告)号：US20050217242A1

公开(公告)日：2005-10-06

申请号：US11133205

申请日：2005-05-20

申请人： Akira Kamoto ,  Toshinari Nagai ,  Yasuhiro Oi ,  Noriyasu Adachi ,  Koji Ide ,  Daisuke Kobayashi ,  Shuntaro Okazaki ,  Naoto Kato ,  Takahiro Uchida

发明人： Akira Kamoto ,  Toshinari Nagai ,  Yasuhiro Oi ,  Noriyasu Adachi ,  Koji Ide ,  Daisuke Kobayashi ,  Shuntaro Okazaki ,  Naoto Kato ,  Takahiro Uchida

IPC分类号： F02D45/00 ,  F01N3/00 ,  F01N3/20 ,  F01N3/24 ,  F01N7/00 ,  F01N11/00 ,  F02D41/14

CPC分类号： F01N3/101 ,  F01N11/00 ,  F01N11/007 ,  F01N13/009 ,  F01N13/0093 ,  F01N2550/02 ,  F02D2200/0816 ,  Y02T10/22 ,  Y02T10/47

摘要： A catalyst degradation determining method includes the steps of: controlling an upstream-of-catalyst air-fuel ratio occurring upstream of a first catalyst to an air-fuel ratio that is rich of a stoichiometric air-fuel ratio so that first and second catalysts store oxygen up to a maximum storage amount of oxygen. The method then includes the steps of controlling the upstream-of-catalyst air-fuel ratio to a first lean air-fuel ratio until an output of a downstream-of-first-catalyst sensor indicates a lean air-fuel ratio, and then to a second lean air-fuel ratio and that has a value that is determined in accordance with an oxidizing-reducing capability index value, until a time point when an output of a downstream-of-second-catalyst air-fuel ratio sensor indicates an air-fuel ratio that is lean.

公开(公告)号：US20050217243A1

公开(公告)日：2005-10-06

申请号：US11133208

申请日：2005-05-20

申请人： Akira Kamoto ,  Toshinari Nagai ,  Yosuhiro Oi ,  Noriyasu Adachi ,  Koji Ide ,  Daisuke Kobayashi ,  Shuntaro Okazaki ,  Naoto Kato ,  Takahiro Uchida

发明人： Akira Kamoto ,  Toshinari Nagai ,  Yosuhiro Oi ,  Noriyasu Adachi ,  Koji Ide ,  Daisuke Kobayashi ,  Shuntaro Okazaki ,  Naoto Kato ,  Takahiro Uchida

IPC分类号： F02D45/00 ,  F01N3/00 ,  F01N3/20 ,  F01N3/24 ,  F01N7/00 ,  F01N11/00 ,  F02D41/14

CPC分类号： F01N3/101 ,  F01N11/00 ,  F01N11/007 ,  F01N13/009 ,  F01N13/0093 ,  F01N2550/02 ,  F02D2200/0816 ,  Y02T10/22 ,  Y02T10/47

摘要： A catalyst degradation determining method includes the steps of: controlling an upstream-of-catalyst air-fuel ratio occurring upstream of a first catalyst to an air-fuel ratio that is rich of a stoichiometric air-fuel ratio so that first and second catalysts store oxygen up to a maximum storage amount of oxygen. The method then includes the steps of controlling the upstream-of-catalyst air-fuel ratio to a first lean air-fuel ratio until an output of a downstream-of-first-catalyst sensor indicates a lean air-fuel ratio, and then to a second lean air-fuel ratio and that has a value that is determined in accordance with an oxidizing-reducing capability index value, until a time point when an output of a downstream-of-second-catalyst air-fuel ratio sensor indicates an air-fuel ratio that is lean.

摘要翻译： 一种催化剂降解测定方法，包括以下步骤：将发生在第一催化剂上游的催化剂上游空燃比控制为具有理论空燃比的空燃比，使第一催化剂和第二催化剂储存 氧气达到最大储存量的氧气。 该方法包括以下步骤：将催化剂上游空燃比控制到第一稀空燃比，直到第一催化剂下游传感器的输出表示稀空燃比，然后至 第二稀空燃比，其具有根据氧化还原能力指标值确定的值，直到下游二催化剂空燃比传感器的输出表示空气 - 精益比。

公开(公告)号：US07165389B2

公开(公告)日：2007-01-23

申请号：US11133208

申请日：2005-05-20

申请人： Akira Kamoto ,  Toshinari Nagai ,  Yosuhiro Oi ,  Noriyasu Adachi ,  Koji Ide ,  Daisuke Kobayashi ,  Shuntaro Okazaki ,  Naoto Kato ,  Takahiro Uchida

发明人： Akira Kamoto ,  Toshinari Nagai ,  Yosuhiro Oi ,  Noriyasu Adachi ,  Koji Ide ,  Daisuke Kobayashi ,  Shuntaro Okazaki ,  Naoto Kato ,  Takahiro Uchida

IPC分类号： F01N3/00

CPC分类号： F01N3/101 ,  F01N11/00 ,  F01N11/007 ,  F01N13/009 ,  F01N13/0093 ,  F01N2550/02 ,  F02D2200/0816 ,  Y02T10/22 ,  Y02T10/47

摘要： A catalyst degradation determining method includes the steps of: controlling an upstream-of-catalyst air-fuel ratio occurring upstream of a first catalyst to an air-fuel ratio that is rich of a stoichiometric air-fuel ratio so that first and second catalysts store oxygen up to a maximum storage amount of oxygen. The method then includes the steps of controlling the upstream-of-catalyst air-fuel ratio to a first lean air-fuel ratio until an output of a downstream-of-first-catalyst sensor indicates a lean air-fuel ratio, and then to a second lean air-fuel ratio and that has a value that is determined in accordance with an oxidizing-reducing capability index value, until a time point when an output of a downstream-of-second-catalyst air-fuel ratio sensor indicates an air-fuel ratio that is lean.

摘要翻译： 一种催化剂降解测定方法，包括以下步骤：将发生在第一催化剂上游的催化剂上游空燃比控制为具有理论空燃比的空燃比，使第一催化剂和第二催化剂储存 氧气达到最大储存量的氧气。 该方法包括以下步骤：将催化剂上游空燃比控制到第一稀空燃比，直到第一催化剂下游传感器的输出表示稀空燃比，然后至 第二稀空燃比，其具有根据氧化还原能力指标值确定的值，直到下游二催化剂空燃比传感器的输出表示空气 - 精益比。

公开(公告)号：US07032374B2

公开(公告)日：2006-04-25

申请号：US10768141

申请日：2004-02-02

申请人： Shuntaro Okazaki ,  Noriyasu Adachi ,  Naoto Kato ,  Toshinari Nagai ,  Yasuhiro Oi ,  Daisuke Kobayashi ,  Akira Ohata ,  Koji Ide

发明人： Shuntaro Okazaki ,  Noriyasu Adachi ,  Naoto Kato ,  Toshinari Nagai ,  Yasuhiro Oi ,  Daisuke Kobayashi ,  Akira Ohata ,  Koji Ide

IPC分类号： F01N3/00

CPC分类号： F02D41/0087 ,  F01N3/101 ,  F01N13/009 ,  F01N13/0093 ,  F01N2430/06 ,  F02D41/0235 ,  F02D41/024 ,  F02D41/086 ,  F02D41/12 ,  F02D41/1401 ,  F02D41/1441 ,  F02D41/1456 ,  F02D2041/1409 ,  F02D2041/1418 ,  F02D2041/1432 ,  F02D2200/0802 ,  Y02T10/22 ,  Y02T10/26

摘要： An exhaust purification apparatus for an internal combustion engine includes a catalyst unit disposed in an exhaust passage of the engine, upstream and downstream air-fuel-ratio sensors disposed upstream and downstream, respectively, of the catalyst unit, a main-feedback controller, and a sub-feedback controller. The main-feedback controller calculates a main-feedback control quantity on the basis of an output value of the upstream air-fuel-ratio sensor and a predetermined upstream-side target value, and corrects, on the basis of the main-feedback control quantity, the quantity of fuel injected by an fuel injector. The sub-feedback controller calculates a sub-feedback control quantity on the basis of an output value of the downstream air-fuel-ratio sensor and a predetermined downstream-side target value, and corrects, on the basis of the sub-feedback control quantity, the quantity of fuel injected by the fuel injector, independently of the correction of the fuel injection quantity by the main-feedback control means.

摘要翻译： 用于内燃机的排气净化装置包括设置在发动机的排气通道中的催化剂单元，分别设置在催化单元的上游和下游的上游和下游空燃比传感器，主反馈控制器和 一个子反馈控制器。 主反馈控制器基于上游空燃比传感器的输出值和规定的上游侧目标值计算主反馈控制量，并根据主反馈控制量 ，由燃料喷射器喷射的燃料量。 副反馈控制器基于下游空燃比传感器的输出值和预定的下游侧目标值计算副反馈控制量，并且基于副反馈控制量 ，由燃料喷射器喷射的燃料量与主反馈控制装置的燃料喷射量的校正无关。

公开(公告)号：US06988359B2

公开(公告)日：2006-01-24

申请号：US10464572

申请日：2003-06-19

申请人： Koji Ide ,  Toshinari Nagai ,  Yasuhiro Oi ,  Naoto Kato

发明人： Koji Ide ,  Toshinari Nagai ,  Yasuhiro Oi ,  Naoto Kato

IPC分类号： F01N3/00

CPC分类号： F02D41/1479 ,  F01N3/101 ,  F01N13/009 ,  F01N13/0093 ,  F01N2570/16 ,  F02D41/0295 ,  F02D41/2454 ,  F02D2200/0814 ,  F02D2200/0816 ,  Y02T10/22

摘要： An exhaust gas control apparatus and an exhaust gas purification method are for an internal combustion engine provided with a first catalyst portion disposed in an exhaust passage of the internal combustion engine, and a second catalyst portion disposed in the exhaust passage downstream of the first catalyst portion. A value that changes according to at least an amount of oxygen stored in the first catalyst portion is obtained as an obtained value. An air-fuel ratio of the internal combustion engine is controlled such that the obtained value matches a target value. A value that changes according to at least an amount of oxygen stored in the second catalyst portion is calculated as a calculated value, based on at least a state of exhaust gas flowing into the second catalyst portion. The target value is changed according to the calculated value. Accordingly, harmful components, such as unburned components and oxides of nitrogen, are able to be effectively purified even if the air-fuel ratio of the internal combustion engine changes abruptly.

摘要翻译： 排气控制装置和废气净化方法用于内燃机，该内燃机设置有设置在内燃机的排气通道中的第一催化剂部分和设置在第一催化剂部分下游的排气通道中的第二催化剂部分 。 获得根据至少存储在第一催化剂部分中的氧气量而变化的值。 控制内燃机的空燃比，使得获得的值与目标值一致。 基于至少流入第二催化剂部分的废气的状态，计算根据至少存储在第二催化剂部分中的氧的量而变化的值作为计算值。 目标值根据计算值进行更改。 因此，即使内燃机的空燃比突然变化，也能够有效地净化有害成分，例如未燃烧成分和氮氧化物。

公开(公告)号：US06502389B2

公开(公告)日：2003-01-07

申请号：US10025452

申请日：2001-12-26

申请人： Akihiro Katayama ,  Toshinari Nagai ,  Akira Kamoto ,  Naoto Kato ,  Shinji Kojima ,  Naoki Baba

发明人： Akihiro Katayama ,  Toshinari Nagai ,  Akira Kamoto ,  Naoto Kato ,  Shinji Kojima ,  Naoki Baba

IPC分类号： F01N300

CPC分类号： F02D41/1474 ,  F01N13/009 ,  F01N13/011 ,  F02D41/0295 ,  F02D41/1441 ,  F02D41/1456 ,  F02D2200/0802 ,  F02D2200/0814

摘要： An air-fuel ratio control system for an internal combustion engine estimates an oxygen storage amount of a catalyst based on a record of an oxygen storage amount, and controls an air-fuel ratio based on the estimated oxygen storage amount. The catalyst is divided into multiple sections in a flow direction of an exhaust gas, the oxygen storage amount in a specified section is estimated according to a behavior of an exhaust gas on upstream and downstream sides of the respective specified sections, and the air-fuel ratio is controlled based on the estimated oxygen storage amount in the specified section.

摘要翻译： 用于内燃机的空燃比控制系统基于氧气存储量的记录来估计催化剂的储氧量，并且基于估计的氧气存储量来控制空燃比。 催化剂在废气的流动方向上分为多个部分，根据在各个特定部分的上游和下游侧的废气的行为来估计特定部分中的储氧量，并且空气燃料 基于规定部分中的估计氧气存储量来控制比率。