SYSTEM AND METHOD FOR MANAGING POWER IN MACHINE HAVING ELECTRIC AND/OR HYDRAULIC DEVICES
First Claim
1. A system for controlling power in a machine comprising an engine configured to provide power to at least one of an electric device and a hydraulic device and receive power from the at least one device, the system comprising:
- a controller configured to;
receive request signals indicative of requested operation of the at least one device;
determine a requested level of power required to meet the requested operation based on the request signals;
determine an ability of the engine to supply the requested level of power upon receipt of the request signals;
provide control signals to the at least one device to either supply power to the engine or receive power from the engine based on the ability of the engine to supply the requested level of power; and
provide control signals to the engine to control speed and output of the engine,wherein the control signals provided to the engine and the at least one device result in operation of the engine within a speed range of a target engine speed.
1 Assignment
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Accused Products
Abstract
A system for controlling power in a machine includes a controller. The controller is configured to receive request signals indicative of requested operation of at least one of an electric device and a hydraulic device. The controller is further configured to determine a requested level of power required to meet the requested operation and determine an ability of the engine to supply the requested level of power. The controller is further configured to provide control signals to the at least one device to either supply power to the engine or receive power from the engine based on the ability of the engine to supply the requested level of power. The controller is also configured to provide control signals to the engine to control speed and output of the engine, wherein the control signals provided to the engine and the at least one device result in operation of the engine within a speed range of a target engine speed.
28 Citations
25 Claims
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1. A system for controlling power in a machine comprising an engine configured to provide power to at least one of an electric device and a hydraulic device and receive power from the at least one device, the system comprising:
a controller configured to; receive request signals indicative of requested operation of the at least one device; determine a requested level of power required to meet the requested operation based on the request signals; determine an ability of the engine to supply the requested level of power upon receipt of the request signals; provide control signals to the at least one device to either supply power to the engine or receive power from the engine based on the ability of the engine to supply the requested level of power; and provide control signals to the engine to control speed and output of the engine, wherein the control signals provided to the engine and the at least one device result in operation of the engine within a speed range of a target engine speed. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for controlling power in a machine comprising an electric device configured to provide electric power and consume electric power, a hydraulic device configured to provide hydraulic power and consume hydraulic power, and an engine configured to provide power to the electric and hydraulic devices and receive power from the electric and hydraulic devices, the method comprising:
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receiving request signals indicative of requested operation of at least one of the electric and hydraulic devices; determining a requested level of power required to meet the requested operation based on the request signals; determining an ability of the engine to supply the requested level of power upon receipt of the request signals; operating the electric and hydraulic devices to either supply power to the engine or receive power from the engine based on the ability of the engine to supply the requested level of power; and operating the engine and the electric and hydraulic devices such that the engine is operated within a speed range of a target engine speed. - View Dependent Claims (12, 13, 14, 15)
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16. A machine comprising:
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a chassis; an operator interface for controlling operation of the machine; an engine coupled to the chassis; an electric device coupled to the chassis; a hydraulic device coupled to the chassis; and a controller configured to; receive request signals indicative of requested operation of at least one of the electric and hydraulic devices; determine a requested level of power required to meet the requested operation based on the request signals; determine an ability of the engine to supply the requested level of power upon receipt of the request signals; provide control signals to the electric and hydraulic devices to either supply power to the engine or receive power from the engine based on the ability of the engine to supply the requested level of power; and provide control signals to the engine to control speed and output of the engine, wherein the control signals provided to the engine and electric and hydraulic devices result in operation of the engine within a speed range of a target engine speed. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25)
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Specification