Hydraulically powered power system for controlling input engine power or input motor power
AssigneeIllinois Tool Works Inc.
InventorNathan Joe Jochman
Life of this patent
Estimating the term…
Abstract
A hydraulically powered power system comprises: a hydraulic pump configured to receive input power from an engine and to convert the input power to an input hydraulic flow; hydraulic output equipment configured to receive the input hydraulic flow to generate a first output; and control circuitry configured to: calculate an engine speed adjustment based on a first target operating characteristic of the hydraulic output equipment and a measured engine speed of the engine, and upon calculating the engine speed adjustment, output a control signal to control the engine to modify an engine speed of the engine based on the engine speed adjustment to modify a flow characteristic of the input hydraulic flow.
Claims20
A hydraulically powered power system comprising:
- a hydraulic pump configured to receive input power from an engine and to convert the input power to an input hydraulic flow;
- hydraulic output equipment configured to receive the input hydraulic flow to generate a first output;
- and
- control circuitry configured to:
- calculate an engine speed adjustment based on a first target operating characteristic of the hydraulic output equipment and a measured engine speed of the engine, and
- upon calculating the engine speed adjustment, output a control signal to control the engine to modify an engine speed of the engine based on the engine speed adjustment to modify a flow characteristic of the input hydraulic flow.
A hydraulically powered power system comprising:
- a hydraulic pump configured to receive input power from an engine and to convert the input power to an input hydraulic flow;
- one or more hydraulic couplers configured to receive the input hydraulic flow and hydraulically couple to one or more hydraulic auxiliary devices configured to generate a first output by receiving the input hydraulic flow;
- and
- control circuitry configured to:
- calculate an engine speed adjustment based on a first target operating characteristic of the one or more hydraulic auxiliary devices and a measured engine speed of the engine, and
- upon calculating the engine speed adjustment, output a control signal to control the engine to modify an engine speed of the engine based on the engine speed adjustment to modify a flow characteristic of the input hydraulic flow.
A hydraulically powered power system comprising:
- a hydraulic pump configured to receive input power from an engine and to convert the input power to an input hydraulic flow;
- a hydraulic motor configured to convert the input hydraulic flow to motor power;
- mechanical output equipment configured to receive the motor power to generate an output;
- and
- control circuitry configured to:
- calculate an engine speed adjustment based on a target operating characteristic of the mechanical output equipment and a measured engine speed of the engine, and
- upon calculating the engine speed adjustment, output a control signal to control the engine to modify an engine speed of the engine based on the engine speed adjustment to modify a flow characteristic of the input hydraulic flow.
Dependencies are inferred from the claim text.