Patent ID: 8868306
Filing Date: 2014-10-21
Classification: E02F,F16H

Abstract:
1. A wheel loader comprising: an engine; a hydraulic pump configured and arranged to be driven by the engine; a variable capacity hydraulic motor configured and arranged to be driven by hydraulic oil discharged from the hydraulic pump; a motor capacity control section configured to control a capacity of the hydraulic motor; a plurality of moving wheels configured and arranged to be driven by the hydraulic motor; an oil temperature detecting section configured and arranged to detect a temperature of the hydraulic oil; an accelerator opening detecting section configured and arranged to detect an accelerator opening degree; a forward and reverse switching operation member configured and arranged to perform a switching operation in order to output an instruction for switching a moving state of the wheel loader to one of a forward state, a reverse state or a neutral state; an operation detecting section configured and arranged to detect a switching instruction from the forward and reverse switching operation member; and a control section configured to selectively execute one of a first control and a second control in a case where the accelerator opening degree is less than a first opening degree which is set in advance and the switching operation is performed by the forward and reverse switching operation member, the control section being configured to control the motor capacity control section in the first control so as to maintain the capacity of the hydraulic motor before and after the switching operation, the control section being configured to control the motor capacity control section in the second control such that the capacity of the hydraulic motor is a minimum value which is set in advance at each speed level, the control section being configured to execute the first control in a case where the temperature of the hydraulic oil is equal to or less than a first temperature which is set in advance and to execute the second control in a case where the temperature of the hydraulic oil is higher than the first temperature.