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公开(公告)号：US20230399971A1
公开(公告)日：2023-12-14
申请号：US18329708
申请日：2023-06-06
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Toru YAEO , Yoshifumi MATSUDA , Masashi HAKARIYA , Atsushi MORIKAWA , Ikuo HODA , Noriyasu ADACHI , Masanori HAYASHI , Kenji IGAWA
CPC classification number: F01N11/005 , F02D41/0235
Abstract: A controller for an internal combustion engine is configured to execute a determination process and an anomaly diagnosing process. The determination process is a process of determining that a deviation between a first change amount and a second change amount during a fuel cutoff operation is less than or equal to a threshold. The anomaly diagnosing process is a process of determining that an exhaust purification device is in a detached state when it is determined in the determination process that the deviation is less than or equal to the threshold. The first change amount and the second change amount are change amounts per unit time of the temperature of exhaust gas on the upstream side and the downstream side of the exhaust purification device, respectively.
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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：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：US20230399965A1
公开(公告)日：2023-12-14
申请号：US18329663
申请日：2023-06-06
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Toru YAEO , Yoshifumi MATSUDA , Masashi HAKARIYA , Atsushi MORIKAWA , Ikuo HODA , Noriyasu ADACHI , Masanori HAYASHI , Kenji IGAWA
Abstract: A controller for an internal combustion engine is configured to execute a regeneration process of burning and removing particulate matter accumulated in an exhaust purification device, a determination process of determining that a deviation between a first change amount and a second change amount is less than or equal to a threshold, the first change amount and the second change amount being change amounts per unit time of the temperature of exhaust gas on the upstream side and the downstream side of the exhaust purification device, respectively, and an anomaly diagnosing process that determines that the exhaust purification device is in a detached state when the determination process determines that the deviation is less than or equal to the threshold. The controller is configured to not execute the determination process during a period from the end of the regeneration process to when a post-regeneration execution condition is met.
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公开(公告)号：US20200378325A1
公开(公告)日：2020-12-03
申请号：US16995255
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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Patent Agency Ranking
公开(公告)号：US20200370490A1
公开(公告)日：2020-11-26
申请号：US16993235
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：US20200370488A1
公开(公告)日：2020-11-26
申请号：US16993185
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：US20230399970A1
公开(公告)日：2023-12-14
申请号：US18329624
申请日：2023-06-06
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Toru YAEO , Yoshifumi MATSUDA , Masashi HAKARIYA , Atsushi MORIKAWA , Ikuo HODA , Noriyasu ADACHI , Masanori HAYASHI , Kenji IGAWA
CPC classification number: F01N11/005 , F02D41/0235 , F02D2200/0802
Abstract: A controller for an internal combustion engine is configured to execute a determination process that determines that a deviation between a first change amount and a second change amount during a fuel cutoff operation is less than or equal to a threshold, and an anomaly diagnosing process that determines that an exhaust purification device is in a detached state when the determination process determines that the deviation is less than or equal to the threshold. The first change amount and the second change amount are change amounts per unit time of the temperature of exhaust gas on the upstream side and the downstream side of the exhaust purification device, respectively. The controller is configured to interrupt the determination process when the upstream-side temperature increases within a determination period.
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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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