Mitsubishi Heavy Industries Limited

Mitsubishi Nichiyu Forklift Co., Ltd.

Kiyomitsu Ogawa

Kensuke Futahashi

Masataka Kawaguchi

Naoki Shibata

Hideki Hashimoto

Takaharu Hiroe

Megumu Tsuruta

Yusuke Kinouchi

Koichi Yamada

Hiroyuki Kanazawa

Yoshimi Okazaki

Yasutaka Fuke

Tomohiro Akaki

Nobutaka Umezawa

Hiroyuki Sugiura

A hybrid industrial vehicle () has as a main configuration: an engine (); a cargo handling generator motor () used for cargo handling; a cargo handling apparatus () that can be driven by power received from both the engine () and the cargo handling generator motor (); and a hybrid control system (). The hybrid control system () suppresses an output of the cargo handling generator motor () according to a temperature of the cargo handling generator motor () during powering of the cargo handling generator motor (), and suppresses a regeneration amount of the cargo handling generator motor () according to the temperature of the cargo handling generator motor () during regeneration of the cargo handling generator motor ().

Hybrid industrial vehicle

In a vehicle and a method of controlling the same, a controller determines whether an idle-stop condition is satisfied or not when an engine is driven, and stops idling of the engine when it is determined that the idle-stop condition is satisfied. In addition, while the idling of the engine is stopped, when an operation order given to a fork driving cylinder by manipulation of a cargo handling lever is received, the controller starts the engine, and switches an oil pump for cargo handling of the fork driving cylinder to an on-load state before an engine revolution number reaches an idling revolution number region.

Vehicle and method for controlling same

An object of the present invention is to provide a battery cooling structure of a hybrid industrial vehicle such as a hybrid forklift, the battery cooling structure being capable of sufficiently cooling a battery and also of eliminating the possibility that the battery receives heat from its peripheral devices. To achieve the object, a second cooling air flow passage () for battery is provided separately from a first cooling air flow passage () in which a radiator () is disposed. A battery packor a battery is disposed in the second cooling air flow passage (). The second cooling air flow passage () is connected to the first cooling air flow passage () at a position upstream of a cooling fan () disposed in the first cooling air flow passage (), so that the cooling fan () sucks cooling air in the first cooling air flow passage () and also sucks cooling air in the second cooling air flow passage ().

Battery cooling structure of hybrid industrial vehicle

A hybrid industrial vehicle performs steering operation and the like during idling stop, without using a complicated mechanism. The hybrid industrial vehicle configured to transmit power of a first electric motor () and power of an engine () to a drive wheel () through a first gear train () comprises: a second electric motor () actuated when supplied with electric power from a battery (); a first hydraulic pump () supplying pressure oil to a cargo handling hydraulic system; a second gear train () interposed among the engine and the second electric motor and the first hydraulic pump and capable of mutual power transmission among the engine, the second electric motor and the first hydraulic pump; a second hydraulic pump () supplying pressure oil to a steering hydraulic system; and a third electric motor () actuated to drive the second hydraulic pump when supplied with electric power from the battery.

A fuel tank mounting mechanism which enhances backward visibility of an operator and performs the loading/unloading work of a fuel tank by a single motion to improve replacement workability. In the mechanism for mounting a fuel tank () on a counterweight () provided in the rear of an industrial vehicle, the front upper surface of the counterweight () is dented to form a recess () for receiving the fuel tank () in the width direction of the body. The recess () is provided with an arm () having a member () for fixing the fuel tank (), and the arm () is supported rotatably for the body fixing portion through an arm rotating shaft () and arranged to rotate about the shaft () as the center of rotation to the right or left side in a vertical plane. The arm () hangs down from the body side when it rotates.

Fuel tank mounting device and an industrial use vehicle therewith

An object is to provide a work vehicle whose drive portion can be downsized. An engine having an engine output shaft, an electric motor driven by a battery which is attached integrally to the engine output shaft so as to drive the engine output shaft, a traveling drive portion having a transmission connected to the engine output shaft and a traveling drive shaft which is rotated by the transmission and which moves the traveling wheels, a work drive portion selectively performing work by means of power from the engine output shaft, a generator charging the battery, a traveling regeneration portion transmitting regenerative energy of the traveling drive portion to the generator, a work regeneration portion transmitting regenerative energy of a fork drive portion to the generator, and a one-way clutch for traveling and a one-way clutch for work provided, respectively, to the traveling regeneration portion and the work regeneration portion, which suppress transmission of motive power from the generator, are included.

Work vehicle

An industrial vehicle having a hybrid system controls a distribution of power generated by an engine and power generated by an electric motor. The vehicle includes an engine for supplying power to one of a running unit and a loading-and-unloading unit; a first motor for supplying power to one of the running unit and the loading-and-unloading unit; a second motor for supplying power to the running unit; a required-power calculating unit for calculating running power, and loading-and-unloading power; a clutch unit for controlling the power transmitted from the engine to the running unit; and a power-distribution calculating unit for selecting a destination to be supplied with power from the engine and the first motor based on the control status of the clutch unit, and for calculating a distribution of power which the engine, the first motor, and the second motor supply based on the calculating running power and loading-and-unloading power.

Growing community of inventors

Sagamihara, Japan

Kiyomitsu Ogawa