| 摘要 |
<P>PROBLEM TO BE SOLVED: To smoothly perform a steering operation from the starting time of a hydraulic motor. <P>SOLUTION: A direction lever 18 is set at a traveling position in a stopping state of the hydraulic motor, and the hydraulic motor 22 is rotated at a high rotation speed before a lapse of a certain time since the starting (S14). Otherwise, after a lapse of the certain time since the direction lever 18 is switched to the traveling position to start the hydraulic motor 22, the hydraulic motor 22 is rotated at a rotation speed not higher than that at the starting in response to tire angular velocity(S15). <P>COPYRIGHT: (C)2004,JPO&NCIPI |
