| 摘要 |
<P>PROBLEM TO BE SOLVED: To prevent engine stall and improve a travelling speed while keeping the travelling speed during no-load, in a work machine equipped with a HST for driving a travel device. <P>SOLUTION: The work machine includes a pressure control valve 34 for controlling a travelling primary side pressure and a control device CU for controlling the pressure control valve 34. The control device CU controls the pressure control valve 34 to create a non-load characteristic line X showing a relationship between an actual engine speed and the travelling primary side pressure during non-load on an engine 29 and a drop characteristic line Z showing a relationship between the actual engine speed and the travelling primary side pressure when a predetermined or greater load works on the engine 29. <P>COPYRIGHT: (C)2013,JPO&INPIT |
