The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 21, 2025
Filed:
Oct. 31, 2022
Kabushiki Kaisha Toyota Jidoshokki, Kariya, JP;
Norinosuke Nakatani, Kariya, JP;
Yoshitaka Takeuchi, Kariya, JP;
Takayuki Homma, Kariya, JP;
Shohei Matsumoto, Kariya, JP;
Hideaki Suzuki, Kariya, JP;
Hidehito Kubo, Kariya, JP;
Hiroyasu Kawauchi, Kariya, JP;
Makoto Koike, Nagakute, JP;
KABUSHIKI KAISHA TOYOTA JIDOSHOKKI, Kariya, JP;
Abstract
An engine system includes: a reformer including a catalyst for decomposing fuel into hydrogen and configured to reform the fuel to generate a reformed gas containing the hydrogen; a temperature detection unit configured to detect a temperature of the reformed gas; a rotation fluctuation detection unit configured to detect an amount of rotation fluctuation of an engine; and a deterioration detection unit configured to detect whether reforming performance of the catalyst of the reformer is deteriorated based on detection values of the temperature detection unit and the rotation fluctuation detection unit, wherein when, in an idling period of the engine, the amount of rotation fluctuation of the engine is equal to or greater than a second threshold in a state where the temperature of the reformed gas is equal to or higher than a first threshold, the deterioration detection unit determines that the reforming performance of the catalyst is deteriorated.