Hitachi Construction Machinery Co., Ltd.

Keisuke Naitou

Tetsuji Tanaka

Kazuyuki Ito

Isamu Aoki

Masaki Yoshikawa

Masaki Nukii

Kouji Shimazaki

Takuya Shimomura

Ryou Taniguchi

Provided is a work vehicle capable of reducing the fuel consumption while maintaining the working efficiency. A wheel loadercomprising a vehicle body controllerA for controlling an engine, wherein the vehicle body controllerA limits an upper limit rotational speed of the enginebased on an accelerator pedal step-on amount α, a brake pedal step-on amount β, a torque converter speed ratio e which is a ratio of a rotational speed of a torque converter, a discharge pressure Pof a loading hydraulic pump, and a stroke amount Sof lift arm cylindersor a stroke amount Sof a bucket cylinder

Work vehicle

Provided is a wheel loader capable of automatically decreasing vehicle speed without making an operator feel discomfort during a loading operation. A wheel loadermounted with a torque converter type traveling drive system comprises a controllerconfigured to control shifting of a transmission. When a vehicle body travels forward at vehicle speed corresponding to a second speed stage set greater by one speed stage than the lowest speed stage of the transmissionwhile operating the lift armupwardly, the controllersets, as a gear ratio of the transmission, an intermediate gear ratio between a gear ratio corresponding to the second speed stage and a gear ratio corresponding to a first speed stage, and outputs a signal for selecting a combination of a plurality of gears corresponding to the set gear ratio to each first to fifth solenoid control valvesA toE.

Wheel loader

Provided is a wheel loader capable of exhibiting sufficient excavation performance while suppressing slip during excavation. A control device provided on a wheel loader according to the present invention is configured to determine a reduction value (&#x394;f') of traveling drive force based on first vehicle body acceleration (av) of a vehicle body calculated from acceleration detected by an acceleration sensor, second vehicle body acceleration (av) of the vehicle body calculated from rotational speed of wheels detected by a rotational speed sensor, and thrust (ph) of a hydraulic cylinder detected by a thrust sensor, and reduce the traveling drive force based on the reduction value and output the reduced traveling drive force.

Wheel loader configured to determine a reduction value of a traveling drive force

Provided is a wheel loader in which the speed position of the transmission can be easily changed with a small number of switches. The wheel loaderincludes a tilting angle sensorfor detecting the tilting angle of the vehicle body. In case that the vehicle body is traveling on an uphill or a downhill with a transmissionin a higher speed position than the lowest speed position, and the tilting angle detected by the tilting angle sensoris not smaller than a prescribed threshold value, a transmission control devicesends the transmissiona command to downshift the transmissionone speed position by each operation of a shiftdown switch

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Kobe, Japan

Keisuke Naitou