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公开(公告)号：US06666199B2
公开(公告)日：2003-12-23
申请号：US09969642
申请日：2001-10-04
申请人： Naoto Kato , Toshinari Nagai , Akira Kamoto , Akihiro Katayama
发明人： Naoto Kato , Toshinari Nagai , Akira Kamoto , Akihiro Katayama
IPC分类号： F02D4100
CPC分类号： F02D41/1494 , F02D41/06 , F02D41/222 , Y02T10/40
摘要： In a control device, in a control device of an internal combustion engine provided with an internal combustion engine main body mounted to a vehicle and a heater operating on the basis of an output from a specific sensor given as a trigger at least before the internal combustion engine main body starts, whether or not the heater is operated before the start is stored, and it is judged that the sensor has failed when operation of the heater is not stored.
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2.发明授权公开(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。
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公开(公告)号：US06546719B2
公开(公告)日：2003-04-15
申请号：US09956992
申请日：2001-09-21
申请人： Akira Kamoto , Toshinari Nagai , Akihiro Katayama , Naoto Kato
发明人： Akira Kamoto , Toshinari Nagai , Akihiro Katayama , Naoto Kato
IPC分类号： F01N300
CPC分类号： F02D41/0295 , F01N11/007 , F01N2550/02 , F01N2570/16 , Y02T10/47
摘要： An air-fuel ratio control apparatus of an internal combustion engine according to the present invention is provided with an oxygen storage amount estimator for estimating an oxygen storage amount of an exhaust purifying catalyst and air-fuel ratio control means for controlling an air-fuel ratio, based on the oxygen storage amount. An upper threshold and a lower threshold are set for the oxygen storage amount, and the air-fuel ratio controller performs such control that, when the oxygen storage amount is larger than the upper threshold, the controller controls the air-fuel ratio to a rich region and that, when the oxygen storage amount is smaller than the lower threshold, the controller controls the air-fuel ratio to a lean region. Since this control makes the oxygen storage amount vary between the upper threshold and the lower threshold (within a predetermined range), it is feasible to promote activation of the exhaust purifying catalyst, so as to keep purification performance of the exhaust purifying catalyst high, and to implement stable control of air-fuel ratio.
摘要翻译： 根据本发明的内燃机的空燃比控制装置设置有用于估计排气净化催化剂的氧气储存量的储氧量估计器和用于控制空燃比的空燃比控制装置 ，基于氧气储存量。 对于氧气存储量设定上阈值和下阈值，空燃比控制器进行这样的控制，即当氧气存储量大于上阈值时，控制器将空燃比控制为丰富 并且当氧气存储量小于下限阈值时，控制器将空燃比控制到稀薄区域。 由于该控制使得氧气存储量在上限阈值和下限阈值之间变化（在预定范围内），因此能够促进排气净化催化剂的活化，从而使排气净化催化剂的净化性能保持在较高水平， 实现空燃比稳定控制。
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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。
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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
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。
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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
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.
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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
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.
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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。
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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。
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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
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.
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