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:
Aug. 19, 2025
Filed:
Jan. 11, 2024
Mazda Motor Corporation, Hiroshima, JP;
Keitaro Kageyama, Aki-gun, JP;
Shinichi Hikitani, Aki-gun, JP;
Tomohiro Koguchi, Aki-gun, JP;
Yukio Jo, Aki-gun, JP;
Daisuke Shimo, Aki-gun, JP;
Masahiro Miyazaki, Aki-gun, JP;
Daisuke Fukuda, Aki-gun, JP;
Akira Tsuda, Aki-gun, JP;
Kenji Tanaka, Aki-gun, JP;
Kazufumi Kumakura, Aki-gun, JP;
Hiroaki Gotan, Aki-gun, JP;
Takahiro Okazaki, Aki-gun, JP;
Kenta Honda, Aki-gun, JP;
Yoshie Kakuda, Aki-gun, JP;
Toshiaki Tohoda, Aki-gun, JP;
Kenta Kobayashi, Aki-gun, JP;
Aki Murai, Aki-gun, JP;
Masaki Yamamoto, Aki-gun, JP;
Michiyuki Miura, Hiroshima, JP;
Yusaku Takahashi, Hiroshima, JP;
Mazda Motor Corporation, Hiroshima, JP;
Abstract
A cooling device of a vehicle is provided, which includes a transmission, a first coolant circuit where a first coolant which cools the internal combustion engine circulates, a second coolant circuit independent from the first coolant circuit, where a second coolant which cools the electric drive system circulates, and a fluid circuit where fluid which lubricates and cools friction engagement elements in the transmission circulates. The fluid circuit includes a first heat exchanger which exchanges heat between the fluid and the first coolant, a second heat exchanger in-series with the first heat exchanger which exchanges heat between the fluid and the second coolant, a first adjuster which changes a flow rate of the fluid passing through the first heat exchanger, and a second adjuster which changes a flow rate of the fluid passing through the second heat exchanger.