US 12,392,274 B2
Vehicle cooling device
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); and Yusaku Takahashi, Hiroshima (JP)
Assigned to Mazda Motor Corporation, Hiroshima (JP)
Filed by Mazda Motor Corporation, Hiroshima (JP)
Filed on Jan. 11, 2024, as Appl. No. 18/410,176.
Claims priority of application No. 2023-012227 (JP), filed on Jan. 30, 2023.
Prior Publication US 2024/0254911 A1, Aug. 1, 2024
Int. Cl. F01P 7/16 (2006.01); B60K 1/00 (2006.01); B60K 11/02 (2006.01); F01P 3/12 (2006.01); F01P 3/20 (2006.01); F01P 5/12 (2006.01); F01P 7/14 (2006.01); F16H 57/04 (2010.01)
CPC F01P 7/165 (2013.01) [B60K 11/02 (2013.01); F01P 3/12 (2013.01); F01P 3/20 (2013.01); F01P 5/12 (2013.01); F01P 7/14 (2013.01); F01P 7/167 (2013.01); F16H 57/0413 (2013.01); B60K 2001/003 (2013.01); F01P 2007/146 (2013.01); F01P 2050/24 (2013.01); F01P 2060/045 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A cooling device of a vehicle, comprising:
a transmission connected to an internal combustion engine and an electric drive system, and configured to change a gear of an output of at least one of the internal combustion engine and the electric drive system and transfer the output to a driving wheel of the vehicle;
a first coolant circuit through which a first coolant configured to cool the internal combustion engine circulates;
a second coolant circuit independent from the first coolant circuit, through which a second coolant configured to cool the electric drive system circulates; and
a fluid circuit through which fluid configured to lubricate and cool friction engagement elements in the transmission circulates, the fluid circuit including:
a first heat exchanger configured to exchange heat between the fluid and the first coolant;
a second heat exchanger that is arranged in series with the first heat exchanger, and configured to exchange heat between the fluid and the second coolant;
a first adjuster valve configured to change a flow rate of the fluid passing through the first heat exchanger; and
a second adjuster valve configured to change a flow rate of the fluid passing through the second heat exchanger,
wherein the first adjuster valve changes the flow rate of the fluid passing through the first heat exchanger, independently from the flow rate of the fluid passing through the second heat exchanger.