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. 20, 2015
Filed:
Feb. 07, 2011
Applicants:
Koichiro Nakatani, Mishima, JP;
Akira Yamashita, Suntou-gun, JP;
Takenori Saoda, Numazu, JP;
Inventors:
Assignee:
TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F01P 3/00 (2006.01); F01P 7/16 (2006.01);
U.S. Cl.
CPC ...
F01P 3/00 (2013.01); F01P 7/167 (2013.01); F01P 2025/30 (2013.01); F01P 2025/32 (2013.01);
Abstract
The character or nature of cooling water is correctly estimated. A cooling system for an internal combustion engine includes a radiator, a bypass passage which bypasses the radiator, a thermostat, and a control unit which changes a valve opening temperature of the thermostat. The cooling system for the internal combustion engine further includes an estimating unit which forbids valve opening of the thermostat and which estimates the character of the cooling water on the basis of temperature transition of the cooling water provided in this state.