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发明授权
CN105074157B 作业车辆 有权

作业车辆
摘要：
本发明提供一种作业车辆，具有：发动机；利用发动机驱动的风扇用可变容量泵和第一行驶用可变容量泵；利用第一行驶用可变容量泵的压力油旋转的第一行驶用可变容量马达；利用第一行驶用可变容量马达驱动的行驶装置；利用风扇用可变容量泵的压力油旋转的风扇用马达；利用风扇用马达驱动的风扇；检测行驶装置的超限运行状态的超限运行状态检测部；控制部。控制部在利用超限运行状态检测部检测的检测值在第一阈值以上时，进行控制，使风扇的转速上升，而成为第一风扇转速。控制部在检测值成为比第一阈值大的第二阈值以上时，进行控制，使风扇的转速成为比第一风扇转速大的第二风扇转速。
摘要（英）：

A work vehicle includes a drive unit, a fan motor, a fan configured to be driven by the fan motor, an overrun state detecting unit configured to detect an overrun state of the drive unit, and a control unit. The control unit is configured to control a rotational speed of the fan to reach a first fan rotational speed by increasing the rotational speed of the fan when a detection value detected by the overrun state detecting unit becomes greater than or equal to a first threshold. The control unit is configured to control the rotational speed of the fan to reach a second fan rotational speed higher than the first fan rotational speed when the detection value becomes greater than or equal to a second threshold greater than the first threshold.

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