Patents by Inventor Kenji Igawa
Kenji Igawa has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11965444Abstract: 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.Type: GrantFiled: June 6, 2023Date of Patent: April 23, 2024Assignee: Toyota Jidosha Kabushiki KaishaInventors: Toru Yaeo, Yoshifumi Matsuda, Masashi Hakariya, Atsushi Morikawa, Ikuo Hoda, Noriyasu Adachi, Masanori Hayashi, Kenji Igawa
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Patent number: 11940704Abstract: The present disclosure provides an organic compound represented by the following general formula [1]: where Z1 and Z2 are each independently selected from an alkyl group that may have a substituent, an aryl group that may have a substituent, and an aralkyl group that may have a substituent; R11 to R17, R21, and R22 are each independently selected from a hydrogen atom and a substituent; Y1 to Y3 are each independently selected from a carbon atom, a N atom, and (N+-L)(X?); and L is any one of an alkyl group, an aryl group, and an aralkyl group.Type: GrantFiled: December 21, 2020Date of Patent: March 26, 2024Assignee: Canon Kabushiki KaishaInventors: Satoshi Igawa, Kenji Yamada
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Patent number: 11898477Abstract: 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.Type: GrantFiled: June 6, 2023Date of Patent: February 13, 2024Assignee: Toyota Jidosha Kabushiki KaishaInventors: Toru Yaeo, Yoshifumi Matsuda, Masashi Hakariya, Atsushi Morikawa, Ikuo Hoda, Noriyasu Adachi, Masanori Hayashi, Kenji Igawa
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Patent number: 11891934Abstract: 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.Type: GrantFiled: June 6, 2023Date of Patent: February 6, 2024Assignee: Toyota Jidosha Kabushiki KaishaInventors: Toru Yaeo, Yoshifumi Matsuda, Masashi Hakariya, Atsushi Morikawa, Ikuo Hoda, Noriyasu Adachi, Masanori Hayashi, Kenji Igawa
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Publication number: 20230399965Abstract: 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.Type: ApplicationFiled: June 6, 2023Publication date: December 14, 2023Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Toru YAEO, Yoshifumi MATSUDA, Masashi HAKARIYA, Atsushi MORIKAWA, Ikuo HODA, Noriyasu ADACHI, Masanori HAYASHI, Kenji IGAWA
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Publication number: 20230399970Abstract: 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.Type: ApplicationFiled: June 6, 2023Publication date: December 14, 2023Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Toru YAEO, Yoshifumi MATSUDA, Masashi HAKARIYA, Atsushi MORIKAWA, Ikuo HODA, Noriyasu ADACHI, Masanori HAYASHI, Kenji IGAWA
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Publication number: 20230399971Abstract: 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.Type: ApplicationFiled: June 6, 2023Publication date: December 14, 2023Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Toru YAEO, Yoshifumi MATSUDA, Masashi HAKARIYA, Atsushi MORIKAWA, Ikuo HODA, Noriyasu ADACHI, Masanori HAYASHI, Kenji IGAWA
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Patent number: 11286837Abstract: 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.Type: GrantFiled: August 17, 2020Date of Patent: March 29, 2022Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Kazumasa Katoh, Takahiko Fujiwara, Kenji Igawa, Kentaro Mineo
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Patent number: 11261777Abstract: 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.Type: GrantFiled: August 13, 2020Date of Patent: March 1, 2022Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Kazumasa Katoh, Takahiko Fujiwara, Kenji Igawa, Kentaro Mineo
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Patent number: 11255246Abstract: 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 exhaust after-treatment system 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.Type: GrantFiled: August 13, 2020Date of Patent: February 22, 2022Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Kazumasa Katoh, Takahiko Fujiwara, Kenji Igawa, Kentaro Mineo
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Publication number: 20220034252Abstract: 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.Type: ApplicationFiled: October 14, 2021Publication date: February 3, 2022Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Kazumasa KATOH, Takahiko FUJIWARA, Kenji IGAWA, Kentaro MINEO
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Publication number: 20220034251Abstract: 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.Type: ApplicationFiled: October 14, 2021Publication date: February 3, 2022Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Kazumasa KATOH, Takahiko FUJIWARA, Kenji IGAWA, Kentaro MINEO
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Patent number: 11236658Abstract: A control device includes 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.Type: GrantFiled: August 13, 2020Date of Patent: February 1, 2022Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Kazumasa Katoh, Takahiko Fujiwara, Kenji Igawa, Kentaro Mineo
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Patent number: 11215103Abstract: 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.Type: GrantFiled: August 13, 2020Date of Patent: January 4, 2022Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Kazumasa Katoh, Takahiko Fujiwara, Kenji Igawa, Kentaro Mineo
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Patent number: 11199119Abstract: 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.Type: GrantFiled: August 13, 2020Date of Patent: December 14, 2021Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Kazumasa Katoh, Takahiko Fujiwara, Kenji Igawa, Kentaro Mineo
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Patent number: 11149616Abstract: 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.Type: GrantFiled: August 13, 2020Date of Patent: October 19, 2021Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Kazumasa Katoh, Takahiko Fujiwara, Kenji Igawa, Kentaro Mineo
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Patent number: 11149615Abstract: 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.Type: GrantFiled: December 23, 2019Date of Patent: October 19, 2021Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Kazumasa Katoh, Takahiko Fujiwara, Kenji Igawa, Kentaro Mineo
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Patent number: 11105247Abstract: 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.Type: GrantFiled: August 17, 2020Date of Patent: August 31, 2021Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Kazumasa Katoh, Takahiko Fujiwara, Kenji Igawa, Kentaro Mineo
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Patent number: 11105248Abstract: 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.Type: GrantFiled: August 17, 2020Date of Patent: August 31, 2021Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Kazumasa Katoh, Takahiko Fujiwara, Kenji Igawa, Kentaro Mineo
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Patent number: 11073065Abstract: 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.Type: GrantFiled: August 17, 2020Date of Patent: July 27, 2021Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Kazumasa Katoh, Takahiko Fujiwara, Kenji Igawa, Kentaro Mineo