Fluid flushing system for a hydraulic circuit of a work machine
AssigneeCaterpillar Inc.
InventorsAnand S. P., Elangovan. U, Prasana. R
Life of this patent
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Abstract
A system for controlling an operation of a hydrostatic circuit of a work machine includes a flush control valve. The flush control valve is configured to be fluidly coupled to the hydrostatic circuit. The hydrostatic circuit is configured to operate in at least two operating modes to supply fluid power to selectively run a plurality of sub-systems of the work machine. In at least one operating mode of the at least two operating modes of the hydrostatic circuit, the flush control valve is configured to move and regulate a flushing flow rate of the fluid to equalize the flushing flow rate with a desired flushing flow rate based on a signal indicative of the at least one operating mode.
Claims20
A system for controlling an operation of a hydrostatic circuit of a work machine, wherein the hydrostatic circuit is operable in a first operating mode and a second operating mode to supply fluid power to selectively run a plurality of sub-systems of the work machine, the system comprising:
- a flush control valve fluidly coupled to the hydrostatic circuit and configured to receive a signal indicative of an operating mode of the hydrostatic circuit, wherein:
- when the signal indicates that the hydrostatic circuit is in the first operating mode, the flush control valve moves to a first open position associated with a first flushing flow rate of the fluid;
- and
- when the signal indicates that the hydrostatic circuit is in the second operating mode, the flush control valve moves to a second open position associated with a second flushing flow rate of the fluid, wherein the second flushing flow rate is different than the first flushing flow rate.
A method for controlling an operation of a hydrostatic circuit of a work machine, wherein the hydrostatic circuit is operable in a first operating mode and a second operating mode to supply fluid power to selectively run a plurality of sub-systems of the work machine the method comprising:
- fluidly coupling a flush control valve to the hydrostatic circuit, wherein the flush control valve is configured to receive a signal indicative of an operating mode of the hydrostatic circuit;
- moving the flush control valve to a first open position, associated with a first flushing flow rate of fluid, when the signal indicates that the hydrostatic circuit is in the first operating mode;
- and
- moving the flush control valve to a second open position, associated with a second flushing flow rate of fluid, when the signal indicates that the hydrostatic circuit is in the second operating mode, wherein the second flushing flow rate is different than the first flushing flow rate.
A work machine comprising:
- a plurality of sub-systems;
- a hydrostatic circuit operable in a first operating mode and a second operating mode to supply fluid power to selectively run the plurality of sub-systems;
- and
- a flush control valve fluidly coupled to the hydrostatic circuit and configured to receive a signal indicative of an operating mode of the hydrostatic circuit, wherein:
- when the signal indicates that the hydrostatic circuit is in the first operating mode, the flush control valve moves to a first open position associated with a first flushing flow rate of the fluid;
- and
- when the signal indicates that the hydrostatic circuit is in the second operating mode, the flush control valve moves to a second open position associated with a second flushing flow rate of the fluid, wherein the second flushing flow rate is different than the first flushing flow rate.
Dependencies are inferred from the claim text.