Mazda Motor Corporation

Yusuke Marutani

Yusuke Koike

Yuma Yamaga

Takafumi Tanehira

Tomohiro Koguchi

Toshiki Takahashi

Haruki Misumi

Kanichi Yamaguchi

Wataru Masuda

Yusuke Mikuni

Katsutoshi Taninaka

Shinji Wakamoto

A battery temperature adjusting device for a vehicle on which a battery is mounted, the battery being a lithium ion battery disposed near a powertrain unit inside an engine bay, is provided. The device includes a first air duct provided to an intake passage configured to lead intake air to a combustion chamber of an engine, a second air duct provided to the intake passage and provided with an intake opening that opens toward a space between the powertrain unit and the battery, an intake-air-amount adjusting part, and a controller configured to acquire an ambient temperature of the powertrain unit. The controller increases a ratio of the second intake air amount relative to the sum of the first intake air amount and the second intake air amount, when the ambient temperature exceeds a first threshold temperature, compared with when the ambient temperature is below the first threshold temperature.

Battery temperature adjusting device for vehicle, vehicle, and method of adjusting battery temperature for vehicle

A cooling system configured to cool an engine of a vehicle is provided, which includes a cooling water passage through which cooling water is supplied to a water jacket in the engine, and having an undercover cooling water passage provided in an undercover and where the cooling water is cooled by exchanging heat with air below the undercover, a radiator provided in the cooling water passage and configured to cool the cooling water by exchanging heat with air flowing into an engine bay from a grille, a flow rate adjuster, a grille shutter provided to the grille and configured to change an effective opening area of the grille, and a controller configured to determine abnormality of the grille shutter and control, when determined as abnormal, the flow rate adjuster to increase the flow rate of the cooling water supplied to the undercover cooling water passage.

Cooling system and cooling method

A cooling structure of a multi-cylinder engine is provided. The engine has cylinders and a cylinder block formed with a cylinder bore wall. The cooling structure includes a water jacket formed in the cylinder block and defined by the cylinder bore wall and a jacket outer surface surrounding the cylinder bore wall, a water pump for feeding a coolant to the water jacket, an introduction portion formed in the cylinder block, having an introduction port opening to the jacket outer surface, and for introducing the coolant to the water jacket, and a spacer member accommodated inside the water jacket. The spacer member has a spacer main body surrounding the cylinder bore wall, and a dividing wall protruding toward the jacket outer surface from an outer circumferential surface of the spacer main body. The dividing wall extends in a circumferential direction at a position opposing the introduction port.

Cooling structure of multi-cylinder engine

Growing community of inventors

Aki-gun, Japan

Yusuke Marutani