Work machine and method for controlling work machine
AssigneeKomatsu Ltd.
InventorsTakahiro HIRAMA, Keiichi HAYASHI
Life of this patent
Estimating the term…
Abstract
A second frame is turnably connected to a first frame. A steering cylinder is connected to the second frame and the first frame. The steering cylinder causes the second frame to turn with respect to the first frame. A hydraulic pump supplies hydraulic fluid to the steering cylinder. An engine drives the hydraulic pump. A steering operating member is operable by an operator. A steering operation sensor outputs a steering command signal corresponding to an operation of the steering operating member. A controller controls a flow rate of the hydraulic fluid supplied from the hydraulic pump to the steering cylinder by controlling a rotation speed of the engine in accordance with the steering command signal.
Claims20
A work machine comprising:
- a first frame;
- a second frame turnably connected to the first frame;
- a steering cylinder connected to the second frame and the first frame and configured to turn the second frame with respect to the first frame;
- a hydraulic pump configured to supply hydraulic fluid to the steering cylinder;
- an engine configured to drive the hydraulic pump;
- a steering operating member configured to be operable by an operator;
- a steering operation sensor configured to output a steering command signal corresponding to an operation of the steering operating member;
- and
- a controller configured to control a flow rate of hydraulic fluid supplied from the hydraulic pump to the steering cylinder by controlling a rotation speed of the engine in accordance with the steering command signal.
A method for controlling a work machine including a first frame, a second frame turnably connected to the first frame, a steering cylinder connected to the first frame and the second frame and causing the second frame to turn with respect to the first frame, a hydraulic pump that supplies hydraulic fluid to the steering cylinder, and an engine that drives the hydraulic pump, the method comprising:
- acquiring a steering command signal corresponding to a steering operating member configured to be operable by an operator;
- and
- controlling a flow rate of hydraulic fluid supplied from the hydraulic pump to the steering cylinder by controlling a rotation speed of the engine in accordance with the steering command signal.
Dependencies are inferred from the claim text.