Mazda Motor Corporation

Kentaro Ota

Yuki Ikawa

Masahiro Nagoshi

Shinichi Hikitani

Masanobu Koutoku

Toshinori Ueno

Keisuke Tanaka

Hironobu Sakashita

Yoji Kawamoto

Natsumi Sato

Shunsaku Shibata

Tomoki Nakayama

Junki Yoshizako

Shoji Goto

A disk rotor of a vehicle brake with improved efficiency in cooling the disk rotor by a synergy effect that comes from ensuring velocity of airflow flowing between cooling fins, ensuring surface areas of the cooling fins, and generating turbulent flow by second fins. A plurality of cooling fins each extending radially from an inner peripheral edge to an outer peripheral edge of a disk rotor are provided inside the disk rotor at intervals in the circumferential direction. Each of the plurality of the cooling fins includes a radial fin extending radially and a second fin spaced apart from the radial fin in the radial direction.

Disk rotor of vehicle brake

A grille shutter control device of a vehicle includes an encapsulation structure covering an engine, a grille shutter provided at an opening formed at a front wall portion of the encapsulation structure, an actuator configured to move the grille shutter to open/close the opening, and a controller configured to control the actuator. The controller determines whether or not heat damage occurs on a related component relating to the engine upon key OFF, closes the grille shutter upon key OFF in the case of determining that the heat damage will not occur, and opens the grille shutter upon key OFF in the case of determining that the heat damage will occur.

Grille shutter control device of vehicle

Growing community of inventors

Hiroshima, Japan

Kentaro Ota