Work vehicle, control method, and recording medium

A control method for controlling a rotation speed of an engine of a work vehicle, the control method comprising:

• changing a rotational force received by a transmission to a rotational force at a gear ratio that corresponds to a desired vehicle speed and outputting the changed rotational force;
• changing a rotation speed of the engine and a deceleration rate of the transmission based on an operation performed on a first operating tool;
• controlling the rotation speed of the engine based on an input provided to the first operating tool;
• and
• allowing a holding instruction to be received by a second operating tool, the holding instruction being an instruction to hold the rotation speed of the engine constant;
• wherein
• in the controlling, in response to the holding instruction being inputted to the second operating tool, control of the rotation speed of the engine which control is based on the input provided to the first operating tool is disabled, and the rotation speed of the engine is held constant in accordance with the holding instruction.

A non-transitory computer readable recording medium storing thereon a control program for execution by a computer to control a rotation speed of an engine of a work vehicle, the control program causing the computer to perform:

• a transmission function of changing a rotational force received by a transmission to a rotational force at a gear ratio that corresponds to a desired vehicle speed, and outputting the changed rotational force;
• a first operating function of changing a rotation speed of the engine and a deceleration rate of the transmission based on an operation performed on a first operating tool;
• a rotation speed controlling function of controlling the rotation speed of the engine based on an input provided to the first operating tool;
• and
• a second operating function of allowing a holding instruction to be received by a second operating tool, the holding instruction being an instruction to hold the rotation speed of the engine constant;
• wherein
• in response to the holding instruction being inputted to the second operating tool, the rotation speed controlling function disables control of the rotation speed of the engine which control is based on the input provided to the first operating tool, and holds the rotation speed of the engine constant in accordance with the holding instruction.

A work vehicle comprising:

• an engine;
• a driver seat;
• a front panel in front of the driver seat;
• a first operating tool to change a rotation speed of the engine;
• and
• a second operating tool to accept an instruction to set the rotation speed of the engine to a pre-stored rotation speed and to set a maximum rotation speed to limit the rotation speed of the engine;
• wherein
• the second operating tool is provided in the front panel.