| 摘要 |
PROBLEM TO BE SOLVED: To provide a working vehicle which is equipped with an HST travel gear, solves the problem that fuel consumption deteriorates as in the case of requiring an increase in a revolving speed of an engine so as to increase a traveling speed while permitting a low tractive force, which can freely adjust the state of a decrease in the revolving speed of the engine with respect to an increase in travel load according to operator's preference. SOLUTION: The working vehicle includes: the HST travel gear (8); a controller (12) which computes a control signal for increasing and decreasing the discharge capacity of an HST pump (8a) depending on the increase/decrease of the revolving speed of the engine (10), and outputs either a computed reference signal or an adjustment signal changing the gentleness/steepness of the inclination of a characteristic curve indicating a relationship between the reference signal and the revolving speed of the engine; and a command means (14) for issuing a command to select either the reference signal or the adjustment signal to the controller. COPYRIGHT: (C)2011,JPO&INPIT |
