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. 23, 2018
Filed:
Jun. 23, 2015
Applicant:
Toyota Jidosha Kabushiki Kaisha, Tokoyta-shi, JP;
Inventors:
Assignee:
TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota-shi, JP;
Primary Examiner:
Int. Cl.
CPC ...
F16H 57/04 (2010.01); F01M 5/00 (2006.01); F28D 21/00 (2006.01); B60K 6/44 (2007.10); F16H 45/02 (2006.01);
U.S. Cl.
CPC ...
F16H 57/0417 (2013.01); F01M 5/005 (2013.01); F16H 57/04 (2013.01); F16H 57/0413 (2013.01); F16H 57/0435 (2013.01); F16H 57/0436 (2013.01); F16H 57/0475 (2013.01); F16H 57/0476 (2013.01); B60K 6/44 (2013.01); B60Y 2200/92 (2013.01); B60Y 2306/05 (2013.01); F16H 45/02 (2013.01); F16H 2045/0215 (2013.01); F28D 2021/0089 (2013.01); Y10S 903/903 (2013.01);
Abstract
A vehicular drive system includes an engine having a first oil, a transmission having a second oil, and a heat exchangerthat exchanges heat between the first oil and the second oil. The magnitude of the amount of reduction of loss torque in the transmission per unit amount of reduction of the kinetic viscosity of the second oil is larger than the magnitude of the amount of increase of loss torque in the engine per unit amount increase of the kinetic viscosity of the first oil.