Mitsubishi Heavy Industries Limited

Mitsubishi Nichiyu Forklift Co., Ltd.

Nippon Yusoki Co., Ltd.

Mitsubishi Logisnext Co. Ltd.

Toshiyuki Honda

Masataka Kawaguchi

Kensuke Futahashi

Fujio Eguchi

Kazuhito Kawashima

Ryuichi Umehara

Hiroshi Satou

Keizo Ogino

Shingo Yuguchi

Michio Akao

Osamu Nakakita

Wataru Mizunuma

The electric-vehicle control device is used in an electric vehicle which is provided with a vehicle body having a driving tire and an axle shaft and with a driving motor which imparts torque to the driving tire. The electric-vehicle control device issues a motor control command to the driving motor. The electric-vehicle control device is provided with a control unit, and the control unit gives feedback control to the driving motor by vibration parameters indicating vertical vibration of the electric vehicle at the center of the axle shaft.

Electric-vehicle control device, and electric vehicle and forklift truck having the same

An energy recovering system of a hydraulic lift device for a battery operated industrial truck. With the system, working oil can be supplied to other hydraulic actuators while energy recovering operation is performed by the hydraulic lift device, and energy recovering efficiency is increased. A hydraulic motor () is disposed in a fluid path for recovering pressurized working fluid from a lift cylinder () via a control valve () to a working fluid reservoir tank () so that the hydraulic motor () is driven by the pressurized working fluid returning from the lift cylinder (). The hydraulic motor () is connected to an electric motor () for driving a hydraulic pump (), which supplies pressurized fluid to the lift cylinder (), by means of a one-way clutch () which performs torque transmission only from the hydraulic motor () to the electric motor ().

Energy recovering system of hydraulic lift device for battery operated industrial trucks

Growing community of inventors

Tokyo, Japan

Toshiyuki Honda