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System and method for energy recovery

An energy storage system, energy technology, applied in accumulator devices, fluid pressure actuation system components, arrangement of multiple different prime movers of general power devices, etc., can solve problems such as low efficiency

Inactive Publication Date: 2014-07-23
CATERPILLAR INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are some inefficiencies in storing energy and subsequently converting it back into usable power

Method used

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  • System and method for energy recovery
  • System and method for energy recovery
  • System and method for energy recovery

Examples

Experimental program
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Embodiment Construction

[0012] refer to figure 1 , an exemplary machine 10 , such as a wheel loader, has a main body 11 , a cab 12 , a pair of front tires 13 and a pair of rear tires 14 . An actuator 15 such as a bucket may be supported by a truss 16 mounted on the main body 11 . The actuator 15 may be controlled by a first actuator 17, eg a tilt cylinder, and the truss 16 may be controlled by a second actuator 18, eg a truss cylinder. The truss 16 may be part of a linkage mechanism operated with a first actuator 17 and a second actuator 18 to control the position and orientation of the actuator 15 . While machine 10 is depicted as a wheel loader, it could be any kind of machine having multiple systems and components capable of performing various operations, such as excavators, bulldozers, backhoes, motor graders, towed Truck or any other kind of machine, mobile or stationary.

[0013] Such as figure 2 As shown, machine 10 includes an energy transfer system 20 having a plurality of systems that ...

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PUM

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Abstract

An energy transfer system includes a power transfer mechanism, a first system, and a second system. The first system includes a first pump-motor operatively connecting the first system to the power transfer mechanism and a regenerative system operatively connected to the first pump-motor. The second system is operatively connected to the power transfer mechanism. Power is transferred between systems by the power transfer mechanism. A method of energy transfer is also provided.

Description

technical field [0001] The present invention relates generally to systems and methods for recovering energy within a machine, and more particularly to systems and methods for recovering energy and sharing this energy between systems of a machine. Background technique [0002] Machines typically use one or more hydraulic actuators to accomplish various tasks. These actuators are fluidly connected to a pump on the machine, which provides pressurized fluid to chambers within the actuators. As the pressurized fluid moves into or through the chamber, the pressure of the fluid acts on hydraulic surfaces of the chamber to effect movement of the actuator and attached work tool or implement. When the pressurized fluid is discharged from the chamber, it returns to the low pressure tank on the machine. Significant amounts of energy may be required to operate multiple hydraulic actuators. To increase efficiency, some machines use regenerative systems to recover energy during operatio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02F9/22E02F3/43
CPCB60K6/12E02F9/2075E02F9/2217E02F9/2253E02F9/2289E02F9/2292E02F9/2296F15B1/024F15B7/006F15B21/14F15B2211/20546F15B2211/20561F15B2211/20569F15B2211/212F15B2211/27F15B2211/50527F15B2211/88F16H61/4096Y02T10/62
Inventor A·Y-R·霍A·罗莎尼托
Owner CATERPILLAR INC