| 摘要 |
PROBLEM TO BE SOLVED: To solve a problem in a working vehicle such as a combine having economical mode that, when a connecting operation of a threshing clutch is performed in an on-economical mode, an engine speed reaches a rated rotation speed before the threshing clutch is connected, and when the threshing clutch is connected in this state, the belt of a driving transmitting means to a threshing section slips to result in the reduction of the service life of the belt. SOLUTION: When the connecting operation of the threshing clutch is performed in an operating means 80 having an economical mode, the rotation speed of a driving source is lowered to an idling rotation speed, and, in this state, the threshing clutch is connected. When a connecting operation of a cropping clutch is further performed, the cropping clutch is connected in that state, the rotation speed of the driving source is increased to the rated rotation speed, and then, a kindness mode being an output characteristic similar to that in the economical mode is provided. COPYRIGHT: (C)2005,JPO&NCIPI
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