Hitachi, Ltd.

Hitachi Car Engineering Co., Ltd.

Keisuke Nishidate

Hisaya Shimizu

Toshiyuki Innami

Keiichi Mashino

Tatsuyuki Yamamoto

Yoshinori Fukasaku

Susumu Tajima

Yuuji Maeda

Kazuo Tahara

Shinichi Fujino

Kenichi Yoshida

Shigeru Yumiyama

Koki Ueta

To provide a vehicle driving apparatus capable of providing a sufficient driving force. A driving high-power generator is driven by an engine. A DC motor is driven directly by energy from the generator. A driving generator output voltage control circuit controls output voltage of the generator in accordance with the demanded driving force from the vehicle to control the motor.

Electric generating system for automobiles and its control method

A vehicle electric drive system and a hybrid engine-motor type vehicle drive system realizing simplification and miniaturization of electric parts and, moreover, reduction in cost while maintaining performances can be provided. A partof wheels is driven by an engine. The wheels are driven by a motor as necessary. The motor, a generator, and an accessory battery are connected to each other via a voltage step-up/step-down device. The voltage step-up/step-down device has a function of stepping up power of the battery and supplying the stepping up power to the motor, and a function of stepped down power of the generator and supplying the stepped down power to the battery and the accessories.

Electric drive device for vehicle and hybrid engine/motor-type four wheel drive device

The present invention provides a vehicle driving apparatus capable of being mounted easily even in a narrow space such as under-floor of the vehicle. The vehicle driving apparatus comprises a first and a second generators driven by an engine for driving front wheels, and a motor driven by receiving a power supply from the second generator to drive rear wheels, the first and second generators being installed in the vicinity of an engine within an engine room, the motor being arranged in the vicinity of a differential gear with which a reduction mechanism is integrated and is positioned substantially in a central part of the rear wheels.

Starting system for internal combustion engine

Growing community of inventors

Hitachinaka, Japan

Keisuke Nishidate