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公开(公告)号：US20160288096A1
公开(公告)日：2016-10-06
申请号：US15035413
申请日：2014-11-10
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA , CATALER CORPORATION
Inventor： Takahiko FUJIWARA , Yuki AOKI , Hiromasa SUZUKI , Isao CHINZEI , Yuji YABUZAKI
CPC classification number: B01J23/44 , B01D53/945 , B01D2255/1021 , B01D2255/1023 , B01D2255/40 , B01D2255/407 , B01D2255/9022 , B01D2255/9032 , B01D2255/908 , B01J23/002 , B01J23/10 , B01J23/63 , B01J35/0006 , B01J35/002 , B01J37/0244 , B01J37/0248 , Y02T10/22
Abstract: Provided is an exhaust gas control catalyst in which a catalyst layer containing at least one of Pd and Pt is formed on a substrate (1), the exhaust gas control catalyst including a first OSC material having a pyrochlore structure and an OSC material whose oxygen storage rate is faster than that of the first OSC material having a pyrochlore structure in a catalyst layer front stage (21) which is in a range from an exhaust gas upstream end of the catalyst layer to a length position which is 50% or lower of a total length of the catalyst layer.
Abstract translation: 本发明提供一种废气控制催化剂，其中在基板（1）上形成有包含Pd和Pt中的至少一种的催化剂层，所述排气控制催化剂包括具有烧绿石结构的第一OSC材料和其储氧 速率比在催化剂层前段（21）中具有烧绿石结构的第一OSC材料的速率快，其范围从催化剂层的废气上游端到50％以下的长度位置 催化剂层的总长度。
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公开(公告)号：US20220186643A1
公开(公告)日：2022-06-16
申请号：US17547230
申请日：2021-12-10
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Takahiro TSUKAGOSHI , Noriyasu KOBASHI , Takahiko FUJIWARA , Teruaki HAIBARA , Taku MIURA
Abstract: The exhaust purification system of an internal combustion engine includes a filter trapping particulate matter in exhaust gas flowing through an exhaust passage of the internal combustion engine and supporting a three-way catalyst, and a filter regeneration part configured to perform regeneration processing for oxidizing and removing particulate matter deposited on the filter when predetermined conditions are satisfied. The filter regeneration part is configured to increase an NO concentration in exhaust gas flowing into the filter when the predetermined conditions are satisfied compared to when the predetermined conditions are not satisfied.
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公开(公告)号：US20200370487A1
公开(公告)日：2020-11-26
申请号：US16993169
申请日：2020-08-13
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Kazumasa KATOH , Takahiko FUJIWARA , Kenji IGAWA , Kentaro MINEO
Abstract: A control device comprising a first exhaust temperature calculation part calculating a temperature of exhaust flowing into a PM trapping device as a first exhaust temperature, a second exhaust temperature calculation part calculating a temperature of exhaust flowing out from the PM trapping device as a second exhaust temperature, a rate of change over time calculation part calculating a rate of change over time of the first exhaust temperature and a rate of change over time of the second exhaust temperature, and a judgment part judging if the PM trapping device is in a removed state removed from the exhaust passage based on a difference between the rate of change over time of the first exhaust temperature and the rate of change over time of the second exhaust temperature.
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公开(公告)号：US20170167352A1
公开(公告)日：2017-06-15
申请号：US15375800
申请日：2016-12-12
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Koji HAGIWARA , Toru KIDOKORO , Yasushi IWAZAKI , Takahiko FUJIWARA
CPC classification number: F01N11/007 , B01D53/9418 , B01D53/9431 , B01D53/9459 , B01D53/9495 , F01N3/085 , F01N3/105 , F01N3/2066 , F01N3/2073 , F01N3/208 , F01N11/002 , F01N13/009 , F01N2550/02 , F01N2560/025 , F01N2570/04 , F01N2900/0416 , F01N2900/0418 , F01N2900/1402 , F01N2900/1404 , F02D41/0235 , F02D41/027 , F02D2200/0802 , Y02T10/24 , Y02T10/47
Abstract: In a deterioration diagnosis apparatus for a selective catalytic reduction (SCR) catalyst in which when an air fuel ratio of a mixture to be combusted in an internal combustion engine is a lean air fuel ratio, inducement processing is executed which is to induce a water gas shift reaction in a pre-stage catalyst, by changing the air fuel ratio of the mixture from the lean air fuel ratio to a predetermined rich air fuel ratio, and diagnosis processing is executed which is to diagnose deterioration of the SCR catalyst based on an output difference between two air fuel ratio sensors at the time of the execution of the inducement processing, when the SCR catalyst is in a state of being subjected to sulfur poisoning resulting from the execution of the S purge processing of the pre-stage catalyst, diagnosis processing is not executed.
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5.发明申请公开(公告)号：US20160186628A1
公开(公告)日：2016-06-30
申请号：US14976585
申请日：2015-12-21
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Hirotaka SAITOH , Koji HAGIWARA , Takahiko FUJIWARA , Toru KIDOKORO , Yasushi IWAZAKI
CPC classification number: F01N3/0842 , F01N3/0814 , F01N3/0864 , F01N3/0871 , F01N3/2066 , F01N3/2073 , F01N3/208 , F01N11/007 , F01N13/009 , F01N2550/02 , F01N2900/0416 , F01N2900/1402 , F01N2900/1622 , F01N2900/1624 , F02D35/0015 , F02D41/0235 , F02D41/027 , F02D41/0275 , F02D41/0295 , F02D41/1441 , F02D41/1456 , F02D41/405 , F02D2200/0816 , Y02T10/22 , Y02T10/24 , Y02T10/47
Abstract: Deterioration of a selective catalytic reduction (SCR) catalyst can be diagnosed with sufficient accuracy, by making use of a sensor for measuring an air fuel ratio of exhaust gas flowing into an exhaust gas purification apparatus, which is equipped with the SCR catalyst, and a sensor for measuring an air fuel ratio of exhaust gas flowing out from the exhaust gas purification apparatus. In an exhaust gas purification apparatus for the exhaust gas purification apparatus, in a period of time in which inducement-processing is carried out which is to induce a water gas shift reaction in a catalyst disposed at the upstream side of the SCR catalyst, by changing an air fuel ratio of exhaust gas discharged from an internal combustion engine from a lean air fuel ratio into a predetermined rich air fuel ratio, an air fuel ratio of exhaust gas flowing into the SCR catalyst and an air fuel ratio of exhaust gas flowing out from the SCR catalyst are measured by air fuel ratio sensors, respectively, and deterioration of the SCR catalyst is diagnosed based on a difference between the measured values of these sensors, wherein the inducement-processing is carried out when the amount of NH3 adsorption in the SCR catalyst is equal to or less than a predetermined amount.
Abstract translation: 选择性催化还原（SCR）催化剂的劣化可以通过使用用于测量流入装有SCR催化剂的废气净化装置的排气的空燃比的传感器，以及 用于测量从废气净化装置流出的废气的空燃比的传感器。 在排气净化装置的排气净化装置中，在设置在SCR催化剂的上游侧的催化剂中进行水煤气变换反应的诱导处理的时间段中， 从内燃机排出的废气的空燃比从稀空燃比变为规定的浓空燃比，流入SCR催化剂的废气的空燃比和从 分别通过空燃比传感器测量SCR催化剂，并且基于这些传感器的测量值之间的差异来诊断SCR催化剂的劣化，其中当SCR中的NH 3吸附量进行诱导处理时 催化剂等于或小于预定量。
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Patent Agency Ranking
公开(公告)号：US20220034252A1
公开(公告)日：2022-02-03
申请号：US17450903
申请日：2021-10-14
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Kazumasa KATOH , Takahiko FUJIWARA , Kenji IGAWA , Kentaro MINEO
Abstract: An apparatus includes circuitry configured to: calculate a temperature of exhaust flowing into an exhaust after-treatment system as a first exhaust temperature, calculate a temperature of exhaust flowing out from the exhaust after-treatment system as a second exhaust temperature, calculate a rate of change over time of the first exhaust temperature and a rate of change over time of the second exhaust temperature, and judge if the exhaust after-treatment system is in a removed state removed from the exhaust passage based on a difference between the rate of change over time of the first exhaust temperature and the rate of change over time of the second exhaust temperature.
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公开(公告)号：US20160186638A1
公开(公告)日：2016-06-30
申请号：US14977916
申请日：2015-12-22
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Koji HAGIWARA , Hirotaka SAITOH , Toru KIDOKORO , Yasushi IWAZAKI , Takahiko FUJIWARA
CPC classification number: F01N11/007 , F01N3/208 , F01N2550/02 , F01N2610/02 , F02D41/00 , F02D41/0235 , F02D41/0295 , F02D41/1441 , F02D41/1456 , F02D2200/0816 , Y02T10/24 , Y02T10/47
Abstract: In an deterioration diagnosis device for the exhaust gas purification apparatus in which in a period of time in which inducement processing is carried out which is to induce a water-gas-shift-reaction in a catalyst disposed at the upstream side of the SCR catalyst, by changing an air fuel ratio of exhaust gas discharged from an internal combustion engine from a lean air fuel ratio into a predetermined rich air fuel ratio, an air fuel ratio of exhaust gas flowing into the SCR catalyst and an air fuel ratio of exhaust gas flowing out from the SCR catalyst are measured by the air fuel ratio sensors, respectively, so that deterioration of the SCR catalyst is diagnosed based on a difference between the measured values of these sensors, wherein an end time of the execution of the inducement processing is adjusted in such a manner that an amount of hydrogen oxidized in the SCR catalyst during the period of the execution of the inducement processing becomes constant.
Abstract translation: 在用于排气净化装置的劣化诊断装置中，其中，在设置在SCR催化剂的上游侧的催化剂中进行引起水煤气变换反应的诱导处理的时间段内， 通过将从内燃机排出的废气的空燃比从稀空燃比改变为规定的浓空燃比，流入SCR催化剂的废气的空燃比和排气的空燃比 分别通过空燃比传感器测量SCR催化剂的出口，从而基于这些传感器的测量值之间的差异来诊断SCR催化剂的劣化，其中调整诱导处理的执行结束时间 使得在诱导处理执行期间在SCR催化剂中氧化的氢的量变得恒定。
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公开(公告)号：US20220034251A1
公开(公告)日：2022-02-03
申请号：US17450896
申请日：2021-10-14
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Kazumasa KATOH , Takahiko FUJIWARA , Kenji IGAWA , Kentaro MINEO
Abstract: An apparatus includes circuitry configured to: calculate a temperature of exhaust flowing into an exhaust after-treatment system as a first exhaust temperature, calculate a temperature of exhaust flowing out from the exhaust after-treatment system as a second exhaust temperature, calculate a rate of change over time of the first exhaust temperature and a rate of change over time of the second exhaust temperature, and judge if the exhaust after-treatment system is in a removed state removed from the exhaust passage based on a difference between the rate of change over time of the first exhaust temperature and the rate of change over time of the second exhaust temperature.
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公开(公告)号：US20200378326A1
公开(公告)日：2020-12-03
申请号：US16995363
申请日：2020-08-17
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Kazumasa KATOH , Takahiko FUJIWARA , Kenji IGAWA , Kentaro MINEO
Abstract: A control device comprising a first exhaust temperature calculation part calculating a temperature of exhaust flowing into a PM trapping device as a first exhaust temperature, a second exhaust temperature calculation part calculating a temperature of exhaust flowing out from the PM trapping device as a second exhaust temperature, a rate of change over time calculation part calculating a rate of change over time of the first exhaust temperature and a rate of change over time of the second exhaust temperature, and a judgment part judging if the PM trapping device is in a removed state removed from the exhaust passage based on a difference between the rate of change over time of the first exhaust temperature and the rate of change over time of the second exhaust temperature.
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公开(公告)号：US20200370486A1
公开(公告)日：2020-11-26
申请号：US16993158
申请日：2020-08-13
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Kazumasa KATOH , Takahiko FUJIWARA , Kenji IGAWA , Kentaro MINEO
Abstract: A control device comprising a first exhaust temperature calculation part calculating a temperature of exhaust flowing into a PM trapping device as a first exhaust temperature, a second exhaust temperature calculation part calculating a temperature of exhaust flowing out from the PM trapping device as a second exhaust temperature, a rate of change over time calculation part calculating a rate of change over time of the first exhaust temperature and a rate of change over time of the second exhaust temperature, and a judgment part judging if the PM trapping device is in a removed state removed from the exhaust passage based on a difference between the rate of change over time of the first exhaust temperature and the rate of change over time of the second exhaust temperature.
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