Work vehicle
AssigneeKubota Corporation
InventorsTetsuo Yamaguchi, Ryoma Iwase, Komei Yamawaki
Life of this patent
Estimating the term…
Abstract
A work vehicle includes an engine, a speed changing apparatus that includes a hydrostatic stepless speed changing mechanism and is configured to subject motive power transmitted from the engine to speed changing and output the motive power, a travelling apparatus configured to travel on the motive power received from the speed changing apparatus, a speed detector configured to detect a speed of the travelling apparatus, a pressure detector configured to detect a hydraulic pressure in a closed circuit of the hydrostatic stepless speed changing mechanism, and a controller.
Claims6
A work vehicle comprising:
- an engine;
- a speed changing apparatus including a hydrostatic stepless speed changing mechanism and configured to subject motive power from the engine to speed changing and output the motive power;
- a travelling apparatus configured to travel on the motive power received from the speed changing apparatus;
- a speed detector configured to detect a speed of the travelling apparatus;
- a pressure detector configured to detect a hydraulic pressure in a closed circuit of the hydrostatic stepless speed changing mechanism;
- and
- a controller configured or programmed to:
- determine, by a determination module and based on the speed and the hydraulic pressure, whether the hydrostatic stepless speed changing mechanism has a swashplate angle such that the rotation speed outputted from the hydrostatic stepless speed changing mechanism and the rotation speed of the engine being offset each other;
- and
- change the swashplate angle by an angle control module based on a result of the determination by the determination module.
A work vehicle comprising:
- an engine;
- a speed changing apparatus including a hydrostatic stepless speed changing mechanism and configured to subject motive power from the engine to speed changing and output the motive power;
- a travelling apparatus configured to travel on the motive power received from the speed changing apparatus;
- a speed detector configured to detect a speed of the travelling apparatus;
- a pressure detector configured to detect a hydraulic pressure in a closed circuit of the hydrostatic stepless speed changing mechanism;
- and
- a controller configured or programmed to:
- determine, by a determination module and based on the speed and the hydraulic pressure, whether the hydrostatic stepless speed changing mechanism has a swashplate angle suitable for stopping the work vehicle;
- and
- change the swashplate angle by an angle control module based on a result of the determination by the determination module
- in a case where the speed is not greater than a predetermined value and the hydraulic pressure is higher than or equal to a predetermined value.
A work vehicle comprising:
- an engine;
- a speed changing apparatus including a hydrostatic stepless speed changing mechanism and configured to subject motive power from the engine to speed changing and output the motive power;
- a travelling apparatus configured to travel on the motive power received from the speed changing apparatus;
- a speed detector configured to detect a speed of the travelling apparatus;
- a pressure detector configured to detect a hydraulic pressure in a closed circuit of the hydrostatic stepless speed changing mechanism;
- a braking apparatus configured to brake the travelling apparatus;
- and
- a controller configured or programmed to:
- determine, by a determination module and based on the speed and the hydraulic pressure, whether the hydrostatic stepless speed changing mechanism has a swashplate angle suitable for stopping the work vehicle;
- and
- change the swashplate angle by an angle control module based on a result of the determination by the determination module
- when the travelling apparatus is being braked.
Dependencies are inferred from the claim text.