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:
Nov. 12, 2019
Filed:
Nov. 14, 2017
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, Aichi-ken, JP;
Hisaya Fujioka, Aichi-gun, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, Aichi-ken, JP;
Abstract
A fuel cell system includes: a first temperature sensor that measures the temperature of cooling water on the side of a cooling water outlet of a fuel cell; a second temperature sensor that measures the temperature of the cooling water on the side of a cooling water inlet of a water heater for heating the cooling water; a third temperature sensor that measures the temperature of the cooling water on the side of a cooling water outlet of the water heater; a cooling water pump that circulates the cooling water; and a control device. The control device is configured to determine that there is a cooling water leakage when the condition: 'measurement temperature Tmeasured by the first temperature sensor≠measurement temperature Tmeasured by the second temperature sensor' or the condition 'no temperature difference ΔT between measurement temperature Tand measurement temperature Tmeasured by the third temperature sensor' is met.