Mazda Motor Corporation

Chinami Morishima

Kazuaki Narahara

Masaharu Marumoto

Tohru Hokazono

Kota Maekawa

Takafumi Tanehira

Yusuke Mikuni

A cooling system for an electric vehicle is provided, which includes a drive unit disposed in a front part of a vehicle, a charger disposed rearward of the drive unit, a coolant circuit connected to the drive unit and the charger and having a bypass route bypassing the charger, a pump, a heat exchanger, at least one temperature sensor, and a control device which controls circulation of the coolant to the coolant circuit based on the temperature of the drive unit. The control device sends the coolant to the bypass route, when the charger is not in operation, and when the temperature of the drive unit is below a given temperature, and sends the coolant to the drive unit after sending the coolant to the charger, when the charger is not in operation, and when the temperature of the drive unit is above the given temperature.

Electric vehicle cooling system

A control device for an engine is provided, which includes a combustion chamber formed by a cylinder and a piston, an intake air amount adjuster that adjusts an intake air amount supplied to the combustion chamber, a controller switchable of a combustion mode between a fuel-lean first combustion mode and a stoichiometric second combustion mode based on an engine operating state, and an intake air cooler that cools the intake air supplied to the combustion chamber. The controller controls the intake air cooler to start intake air cooling in response to a request for switching the combustion modes, and after the intake air cooling is started, controls the intake air amount adjuster to start the switching of the combustion modes, and then controls the intake air cooler and the intake air amount adjuster so that the switching of the combustion modes ends after the intake air cooling is finished.

Control device for engine

An intake system of an engine mounted on a vehicle where a cabin is air-conditioned by an air conditioner, is provided. A heat exchanger of an evaporator of the air conditioner is divided into a first heat exchanger and a second heat exchanger that are mutually independent, and an air passage includes a first division passage and a second division passage. The intake system cools intake air utilizing a part of the air conditioner, and includes a connecting passage that guides first air cooled by passing through the first heat exchanger, a passage switch, and a controller. When the controller determines that a cooling demand for the intake air exists, it controls the first air to flow into an intake passage through the connecting passage, and when the controller determines that there is no cooling demand, it controls the first air to flow into the first division passage.

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Aki-gun, Japan

Chinami Morishima