Service pack power management
AssigneeIllinois Tool Works Inc.
InventorsBenjamin G. Peotter, Ross Renner
Life of this patent
Estimating the term…
Abstract
A power management system, in certain aspects, may utilize direct load sensing feedback from the prime mover (e.g., engine), thereby reducing the possibility of overloading the prime mover. The use of direct load sense feedback from the prime mover can then be used with additional feedback, such as prime mover RPM feedback and individual output load sensing feedback, to directly control the output loads and set the primary power sources rpm set-point to better manage the power available and reduce the possibility of overloading the primary power source.
Claims17
A service pack, comprising:
- an engine;
- one or more services driven by the engine, wherein the one or more services comprise a generator, an air compressor, a hydraulic pump, or a combination thereof;
- and
- a controller configured to:
- determine an engine load directly from the engine based on sensed feedback indicative of at least one engine operating parameter of the engine, wherein the sensed feedback indicative of the at least one engine operating parameter comprises at least two of an engine power, an engine torque, a fuel injection quantity, an engine exhaust temperature, an engine throttle position, or a combination thereof;
- and
- control output to the one or more services based at least partially on the engine load.
A system, comprising:
- a load priority controller configured to sense engine load associated with an engine based on load sense feedback, wherein the load sense feedback comprises:
- first load sense feedback indicative of an engine load measured directly from the engine, wherein the first load sense feedback relates to at least one engine operating parameter and includes at least one fuel injection parameter relating to a fuel injection quantity or a throttle position of the engine;
- and
- second load sense feedback indicative of a hydraulic load associated with a hydraulic pump coupled to the engine, a pneumatic load associated with a compressor coupled to the engine, an electric load associated with a generator coupled to the engine, or a combination thereof;
- wherein the load priority controller is configured to control the engine, the hydraulic pump, the compressor, the generator, or a combination thereof, in response to the load sense feedback and a priority control scheme.
A method of managing power of an engine-driven system, comprising:
- obtaining load feedback associated with an engine, wherein the load feedback comprises:
- first load feedback indicative of an engine load sensed directly from the engine, wherein the first load sense feedback relates to a least one engine operating parameter of the engine;
- and
- second load sense feedback indicative of an external load driven by the engine, wherein the external load comprises a hydraulic pump, a compressor, a generator, or a combination thereof;
- and
- adjusting the engine and the external load in response to the load feedback and one or more limits associated with the engine, wherein adjusting the engine and the external load comprises substantially power matching the engine to the external load.
Dependencies are inferred from the claim text.