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:
Jan. 23, 2018
Filed:
Apr. 30, 2013
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, Aichi-ken, JP;
Yohei Hosokawa, Susono, JP;
Takashi Amano, Susono, JP;
Satoru Ito, Susono, JP;
Kojiro Hayakawa, Shizuoka-ken, JP;
TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota-shi, JP;
Abstract
A cooling water control apparatus is a cooling water control apparatus for controlling a cooling apparatus having a first pipe which circulates cooling water through an engine; a second pipe which circulates the cooling water not through the engine; and a switching valve whose state is changed between opened and closed states, and has: a detecting device which detects first temperature of the cooling water in a pipe portion of the first pipe between the engine and the switching valve; and a determining device which determines that there is failure of the switching valve whose state is the closed state, if required period from the output of the command for changing the state of the switching valve from the opened state to the closed state until the first temperature reaches predetermined temperature is larger than predetermined target period.