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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.:

US 11118670 B1

PDFFull Text
Date of Patent:
Sep. 14, 2021

Filed:

Jan. 29, 2020

Vehicle cooling system

Applicant:

Toyota Jidosha Kabushiki Kaisha, Toyota, JP;

Inventors:

Takahisa Yashiro, Nagoya, JP;

Yoshitada Yamagishi, Okazaki, JP;

Assignee:

TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota, JP;

Attorney:

Oblon, McClelland, Maier & Neustadt, L.L.P.

Primary Examiner:

Huan Le

Int. Cl.
CPC ...
H02K 9/19 (2006.01); F16H 57/04 (2010.01); F16N 7/38 (2006.01); F01M 1/02 (2006.01); F16N 29/02 (2006.01); F01M 1/16 (2006.01); F01M 1/18 (2006.01); F01M 11/10 (2006.01); B60K 1/00 (2006.01); F16H 57/037 (2012.01); H02K 7/116 (2006.01); B60K 17/16 (2006.01); F16H 57/02 (2012.01);
U.S. Cl.
CPC ...
F16H 57/0476 (2013.01); B60K 1/00 (2013.01); B60K 17/16 (2013.01); F01M 1/02 (2013.01); F01M 1/16 (2013.01); F01M 1/18 (2013.01); F01M 11/10 (2013.01); F16H 57/037 (2013.01); F16H 57/0436 (2013.01); F16H 57/0483 (2013.01); F16N 7/38 (2013.01); F16N 29/02 (2013.01); H02K 7/116 (2013.01); H02K 9/19 (2013.01); B60K 2001/001 (2013.01); F01M 2001/0253 (2013.01); F01M 2250/60 (2013.01); F16H 2057/02052 (2013.01); F16N 2200/10 (2013.01); F16N 2210/04 (2013.01); F16N 2250/08 (2013.01); F16N 2270/70 (2013.01);
Abstract

A vehicle cooling system comprises an oil circulation circuit in which a cooling oil is circulated by an electric oil pump to cool a predetermined cooling target with the cooling oil; an oil temperature sensor detecting an oil temperature that is a temperature of the cooling oil; and a control device including a cooling control portion outputting a rotation command for operating the electric oil pump so as to cool the cooling target. The control device includes a pump abnormality determination portion outputting the rotation command to the electric oil pump to determine a presence/absence of abnormality based on a rotation state of the electric oil pump when an operation stop time of the vehicle is longer than a predefined determination permission time and an oil temperature detection value detected by the oil temperature sensor is higher than a predefined determination permission temperature.

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