-
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.
-
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.
-
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.
-
4.发明申请公开(公告)号：US20170328810A1
公开(公告)日：2017-11-16
申请号：US15590097
申请日：2017-05-09
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Toru YAEO
CPC classification number: G01M15/02 , F02M35/10163 , G01M15/00 , G01M15/09 , Y02T10/144
Abstract: An electronic control unit diagnoses leakage abnormality in an intake system downstream from a supercharger provided in the intake system of the engine. The electronic control unit sets, as a supercharging region monitoring value, a ratio between a first air amount obtained from a detection value of an air flowmeter and a second air amount obtained from a detection value of an intake pressure sensor, the ratio being the ratio obtained when the engine is operated in a supercharging region. The electronic control unit also sets, as a non-supercharging region monitoring value, a ratio obtained when the engine is driven in a non-supercharging region. The electronic control unit determines the presence of the leakage abnormality in the intake system when the ratio of the supercharging region monitoring value to the non-supercharging region monitoring value is larger than a predetermined specified value.
-
-
-
Search Results
4
records
(took 0.017 seconds)
