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. 15, 2019
Filed:
Oct. 12, 2017
Subaru Corporation, Tokyo, JP;
SUBARU CORPORATION, Tokyo, JP;
Abstract
A cooling apparatus for vehicle includes a cooling system, a coolant pump, and a diagnostic controller. The cooling system includes a cooling circuit in which a coolant circulates. The coolant pump causes the coolant to circulate in the cooling circuit. The diagnostic controller diagnoses an abnormality of the cooling system on a basis of a coolant temperature. The diagnostic controller performs a first mode process that increases the coolant temperature by stopping the coolant pump, and a second mode process that causes the coolant temperature to fluctuate periodically by driving the coolant pump. Upon the second mode process, the diagnostic controller diagnoses that the cooling system is normal on a condition that a cycle of the fluctuation of the coolant temperature is shorter than a reference time, and diagnoses that the cooling system is abnormal on a condition that the cycle of the fluctuation is longer than the reference time.