Mazda Motor Corporation

Yusuke Koike

Yuma Yamaga

Takafumi Tanehira

Yusuke Mikuni

Kanichi Yamaguchi

Katsutoshi Taninaka

Yusuke Marutani

Hiroshi Yamada

Ryohei Ono

Masahiko Shigetsu

Takeo Yamauchi

Yoshihisa Nakamoto

Hisaya Kawabata

Kazuya Yokota

Kota Maekawa

Toshiki Takahashi

Masaharu Marumoto

Yasuhiro Matsumura

Wataru Masuda

Tohru Hokazono

Toshihiko Ohsumi

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 is provided to cool fluid used in a device mounted on a vehicle, by exchanging heat with cooler cooling water in a cooler. The system includes a cooling water passage connected to the cooler and having an undercover cooling water passage provided to an undercover, a cooler radiator configured to cool the cooler cooling water by exchanging heat between the cooler cooling water and air flowing into an engine bay from a grille, a flow rate adjuster configured to adjust a flow rate of the cooler cooling water supplied the undercover cooling water passage, and a controller configured to acquire at least a pressure or a temperature of the fluid, and control the flow rate adjuster to increase the flow rate of the cooler cooling water supplied to the undercover cooling water passage based on an increase in the pressure or the temperature of the fluid.

Cooling system and cooling method

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.

A cooling system is provided to cool an engine of a vehicle, which includes a cooling water passage through which cooling water is supplied to a water jacket formed in the engine, and having an undercover cooling water passage provided in an 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 configured to adjust a cooling water flow rate supplied to the undercover cooling water passage, and a controller configured to acquire a temperature of the cooling water of the water jacket in the engine and, when the temperature is above a temperature threshold, control the flow rate adjuster to increase the flow rate of the cooling water supplied to the undercover cooling water passage compared to when the acquired temperature is below the temperature threshold.

A premixed compression ignition engine system includes an engine, a fuel injector, a water injector, and a controller. The controller conducts: a compression-stroke mid-period injection that causes a fuel injector to inject fuel to form a fuel-air mixture in a surrounding space of a combustion chamber; a compression top-dead-center injection that causes the fuel injector to inject fuel to form a fuel-air mixture in the central space of the combustion chamber after the compression-stroke mid-period injection; and a water injection that causes a water injector to inject water to the surrounding space of the combustion chamber at a timing from commencement of the compression-stroke mid-period injection to commencement of the compression top-dead-center injection.

Premixed compression ignition engine system

An exhaust gas purification catalytic devicecontains Pt, Pd, and Rh as catalytic metals. The catalytic metal Pt is loaded on silica-alumina which serves as a support, and Pt-loaded silica-alumina obtained by loading the Pt on the silica-alumina is contained in a catalytic layer with which an exhaust gas contacts first.

Catalyst device for exhaust gas purification and method for exhaust gas purification

Growing community of inventors

Aki-gun, Japan

Yusuke Koike