Patent ID: 11872979
Assignee: KUBOTA CORPORATION
Field: Transport (Mechanical engineering)
Classification: CPC B  Y | IPC B

Claim 0:
1. A riding type work vehicle that travels in a field while carrying out a utility work, the work vehicle comprising:
a driving wheel provided in a machine body;
a power source for inputting a rotational force to the driving wheel;
an output instruction acquisition section for acquiring an output instruction for the power source according to an operation of an operation input unit;
a traveling control unit for controlling driving of the power source in accordance with the output instruction;
a reservoir section for reserving energy source for driving the power source;
a remaining amount detection section for detecting a remaining amount of the energy source in the reservoir section; and
a restriction section configured to:
permit a maximum speed of the machine body in accordance with the output instruction when the remaining amount of the energy source is larger than a preset first threshold value;
progressively decrease the maximum speed of the machine body in accordance with a diminishing of the remaining amount of the energy source, irrespective of the output instruction and a load on the power source, when the remaining amount of the energy source is equal to or smaller than the preset first threshold value and larger than a preset second threshold value, which is smaller than the preset first threshold value; and
restrict the maximum speed of the machine body to a preset fixed speed, which is larger than zero, irrespective of the output instruction and continued diminishing of the remaining amount of the energy source, when the remaining amount of the energy source is equal to or smaller than the preset second threshold value.