Energy efficient fluid powered linear actuator with variable area and concentric chambers

Title: Energy efficient fluid powered linear actuator with variable area and concentric chambers

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Abstract

Hydraulic actuation systems having concentric chambers, variable displacements and energy recovery capabilities include cylinders with pistons disposed inside of barrels. When operating in energy consuming modes, high speed valves pressurize extension chambers or retraction chambers to provide enough force to meet or counteract an opposite load force. When operating in energy recovery modes, high speed valves return a working fluid from extension chambers or retraction chambers, which are pressurized by a load, to an accumulator for later use.

Inventors:: Lind, Randall F.; Love, Lonnie J.

Issue Date:: 2016-11-15

Research Org.:: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1332267

Patent Number(s):: 9494168

Application Number:: 14/468,629

Assignee:: UT-Battelle, LLC (Oak Ridge, TN)

Patent Classifications (CPCs):: F - MECHANICAL ENGINEERING F15 - FLUID-PRESSURE ACTUATORS F15B - SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL

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F - MECHANICAL ENGINEERING F15 - FLUID-PRESSURE ACTUATORS F15B - SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL
F15B2211/88 - Control measures for saving energy
F15B11/006 - {Hydraulic "Wheatstone bridge" circuits, i.e. with four nodes, P-A-T-B, and on-off or proportional valves in each link}
F15B2211/625 - Accumulators
F15B2211/7107 - the output members being mechanically linked
F15B2211/6336 - representing a state of the output member, e.g. position, speed or acceleration
F15B2211/7055 - having more than two chambers
F15B2211/30575 - in a Wheatstone Bridge arrangement
F15B11/036 - by means of servomotors having a plurality of working chambers
F15B21/14 - Energy-recuperation means
F15B2211/761 - Control of a negative load, i.e. of a load generating hydraulic energy

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DOE Contract Number:: AC05-00OR22725

Resource Type:: Patent

Resource Relation:: Patent File Date: 2014 Aug 26

Country of Publication:: United States

Language:: English

Subject:: 42 ENGINEERING; 32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION

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                    Lind, Randall F., and Love, Lonnie J.. Energy efficient fluid powered linear actuator with variable area and concentric chambers.  United States: N. p., 2016. 
        Web.

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                    Lind, Randall F., & Love, Lonnie J.. Energy efficient fluid powered linear actuator with variable area and concentric chambers.  United States.

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                    Lind, Randall F., and Love, Lonnie J.. Tue .  
        "Energy efficient fluid powered linear actuator with variable area and concentric chambers".  United States.  https://www.osti.gov/servlets/purl/1332267.

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@article{osti_1332267,

  title        = {Energy efficient fluid powered linear actuator with variable area and concentric chambers},

  author       = {Lind, Randall F. and Love, Lonnie J.},

  abstractNote = {Hydraulic actuation systems having concentric chambers, variable displacements and energy recovery capabilities include cylinders with pistons disposed inside of barrels. When operating in energy consuming modes, high speed valves pressurize extension chambers or retraction chambers to provide enough force to meet or counteract an opposite load force. When operating in energy recovery modes, high speed valves return a working fluid from extension chambers or retraction chambers, which are pressurized by a load, to an accumulator for later use.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {2016},

  month        = {11}

}

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