Controller and control method for internal combustion engine

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United States of America Patent

PATENT NO 11965444
APP PUB NO 20230399970A1
SERIAL NO

18329624

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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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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Patent Owner(s)

Patent OwnerAddress
TOYOTA JIDOSHA KABUSHIKI KAISHA1 TOYOTA-CHO TOYOTA-SHI AICHI-KEN 471-8571

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Adachi, Noriyasu Numazu, JP 35 128
Hakariya, Masashi Nisshin, JP 21 87
Hayashi, Masanori Toyota, JP 73 817
Hoda, Ikuo Nagoya, JP 5 13
Igawa, Kenji Shizuoka-ken, JP 17 59
Matsuda, Yoshifumi Toyota, JP 17 49
Morikawa, Atsushi Toyota, JP 20 539
Yaeo, Toru Anjo, JP 5 4

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