To constitute a work vehicle to properly detect a load on an engine when including a first control means and a second control means (an isochronous control means).
The work vehicle includes an engine speed difference detection means detecting a difference between an engine speed of the engine in a non-load state corresponding to an operation position of an accelerator operating tool 73 and a detection value of an engine speed sensor 72. In a state that a first state is set, a load on the engine is detected based on a detection value of the engine speed difference detection means regardless of an operation of the accelerator operating tool 73. In a state that a second state is set, a load on the engine is detected based on a fuel injection amount of the engine when an operation amount per unit time of the accelerator operating tool 73 is smaller than a set value, and a load on the engine is detected based on the detection value of the engine speed difference detection means when the operation amount per unit time of the accelerator operating tool 73 is larger than the set value.
OKABE NOBUYUKI
YOSHIKAWA KENJI
| JP2006348889A | 2006-12-28 | |||
| JPH07332147A | 1995-12-22 | |||
| JP2005009402A | 2005-01-13 | |||
| JPS6172840A | 1986-04-14 |