To achieve downsizing of an engine 70 by securing output torque in a low revolution area of the engine 70 without using a supercharger in a work vehicle 141.
The work vehicle 141 includes the engine 70 mounted in a traveling machine body 142, a common rail type fuel injection device 117 for injecting fuel to the engine 70, and a continuously variable transmission 159 for changing a motive power from the engine 70. The revolution speed N of the engine 70 is limited to just two kinds N#1 and N#2. Even if the revolution speed N of the engine 70 is changed to either of the two kinds N#1, N#2, the transmission gear ratio of the continuously variable transmission 159 is changed and adjusted so that the vehicle speed of the traveling machine body 142 does not change before and after the revolution speed change.
TAO TOMOHISA
OUCHIDA TAKASHI
HIRAI MASAO
| JP2004278337A | 2004-10-07 | |||
| JP2009287472A | 2009-12-10 | |||
| JP2010143396A | 2010-07-01 | |||
| JP2006183523A | 2006-07-13 |
Akio Ishii
Ryuichi Watanabe
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