Nissan Motor Company Limited

Ryo Sano

Motoyuki Hattori

Hiromoto Shimizu

Yuuichi Hosaka

Takayuki Iwasaki

Masaya Furushou

Toshihiko Ootsuka

An engine starting device is provided with a battery, a starter motor, an inrush current limit circuit and a control unit. The inrush current limit circuit has a resistor and a bypass relay connected in parallel. The inrush current limit circuit is interposed between the battery and the starter motor. The bypass relay has a normally open contact that is configured to be closed at a time of engine startup. The control unit is programmed to include a fault identification unit that identifies a location of fault occurrence in the inrush current limit circuit based on a minimum voltage of the battery existing while the starter motor is determined to be in operation and an amount of decrease in voltage of the battery existing while the normally open contact is determined to be actuated in a closing direction.

Engine starting device and engine automatic stop and restart control device

A current is supplied to a driving relay that drives a bypass relay when restarting an engine after idle reduction, and the current supply to the driving relay is interrupted when the engine is started for the first time based on operation of a driver.

Engine starting device of idle reduction vehicle

An engine starting device is basically provided with a resistor, a bypass circuit and a switch. The resistor is configured to be disposed in series between a starter motor and a battery. The bypass circuit is disposed in parallel with respect to the resistor. The switch is configured to selectively open and close the bypass circuit, the switch opening the bypass circuit in response to commencement of engine startup, and closing the bypass circuit in response to the battery voltage approaches a maximum value during engine startup.

Engine starting device

A vehicular engine automatic stop control apparatus has a coast stop controller that performs a coast stop control of stopping an engine in response to a situation where driver's brake pedal operation is above a predetermined threshold value while a vehicle is traveling, a road surface gradient sensor that senses a road surface gradient, and a coast stop control cancellation unit that cancels the coast stop control in response to a situation where a first sensed value of the road surface gradient is above a predetermined cancellation threshold value in absolute value. The first sensed value of the road surface gradient is obtained at a first time instant when the vehicle becomes stationary in a situation where the engine has been stopped by the coast stop controller.

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Kawasaki, Japan

Ryo Sano