| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a working vehicle that can suppress vibration of a fuselage of which vibration source is vibration by operation of an engine fuselage without changing traveling speed of the fuselage. <P>SOLUTION: The working vehicle includes: an engine 2 loaded in the fuselage of a tractor 100; a fuel injection control device 50 which changes engine speed Reg1; a continuously variable transmission 10 which steplessly shifts gear of the engine speed Reg1; a hydraulic servomechanism 40 which changes transmission gear ratio of the continuously variable transmission 10; a vibration detection sensor 171 which detects vibration of the fuselage of the tractor 100; and a control device 170 which performs, if vibration of the fuselage of the tractor 100 which the vibration detection sensor 171 detects exceeds a threshold, vibration suppression control which changes gear ratio by hydraulic servomechanism 40 so that output shaft rotation speed Rtm before the output shaft rotation speed Rtm of the continuously variable transmission 10 changes the engine speed Reg1 may be maintained, while the engine rotation speed Reg1 is changed only the prescribed amount dReg by the fuel injection control device 50. <P>COPYRIGHT: (C)2012,JPO&INPIT</p> |
