| 摘要 |
PROBLEM TO BE SOLVED: To prevent excessive rotation of a hydraulic pump of an HST and its pump input shaft, when a main clutch is disengaged in traveling, in a working vehicle having the HST. SOLUTION: In traveling, when a main clutch engagement-disengagement detecting means 112 detects a disengagement state of the main clutch 22 (S2), a control means 110 determines whether or not the traveling speed detected by a traveling speed detecting means 116 is the preset speed or more (S3), and if the traveling speed is a preset speed or more, controls so as to hold a movable swash plate 55 of the hydraulic pimp 51 of the HST 50 at a present tilt angle (S4). COPYRIGHT: (C)2008,JPO&INPIT |
