Valve actuator assembly having a center biased spool valve with detent feature

Title: Valve actuator assembly having a center biased spool valve with detent feature

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Abstract

A valve actuator assembly for an engine includes a movable poppet valve, and movable first and second spool valves. The assembly also includes an intermediate channel interconnecting the first and second spool valve, a driving channel, and a first and second feedback channel interconnecting the second spool valve and the poppet valve. The valve actuator assembly includes an actuator cooperating with the first spool valve to position the first spool valve to selectively allow high pressure fluid flow to the second spool valve and the driving channel to position the engine valve. The valve actuator assembly further includes a first and second on/off valve in respective fluid communication with the first feedback channel and the second feedback channel to selectively exhaust the first and second feedback channel to control motion of the second spool valve. The second spool valve includes a detent feature operable to maintain the second spool valve in a center biased position.

Inventors:: Marriott, Craig D.; Sun, Zongxuan

Issue Date:: 2010-01-12

Research Org.:: GM Global Technology Operations, Inc., Detroit, MI (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1531621

Patent Number(s):: 7644688

Application Number:: 11/417,097

Assignee:: GM Global Technology Operations LLC (Detroit, MI)

Patent Classifications (CPCs):: F - MECHANICAL ENGINEERING F01 - MACHINES OR ENGINES IN GENERAL F01L - CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC Y10T - TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

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F - MECHANICAL ENGINEERING F01 - MACHINES OR ENGINES IN GENERAL F01L - CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
F01L9/02 - by fluid means, e.g. hydraulic

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC Y10T - TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
Y10T137/86622 - Motor-operated

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DOE Contract Number:: FC26-05NT42415

Resource Type:: Patent

Resource Relation:: Patent File Date: 2006-05-03

Country of Publication:: United States

Language:: English

Citation Formats


                    Marriott, Craig D., and Sun, Zongxuan. Valve actuator assembly having a center biased spool valve with detent feature.  United States: N. p., 2010. 
        Web.

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                    Marriott, Craig D., & Sun, Zongxuan. Valve actuator assembly having a center biased spool valve with detent feature.  United States.

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                    Marriott, Craig D., and Sun, Zongxuan. Tue .  
        "Valve actuator assembly having a center biased spool valve with detent feature".  United States.  https://www.osti.gov/servlets/purl/1531621.

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@article{osti_1531621,

  title        = {Valve actuator assembly having a center biased spool valve with detent feature},

  author       = {Marriott, Craig D. and Sun, Zongxuan},

  abstractNote = {A valve actuator assembly for an engine includes a movable poppet valve, and movable first and second spool valves. The assembly also includes an intermediate channel interconnecting the first and second spool valve, a driving channel, and a first and second feedback channel interconnecting the second spool valve and the poppet valve. The valve actuator assembly includes an actuator cooperating with the first spool valve to position the first spool valve to selectively allow high pressure fluid flow to the second spool valve and the driving channel to position the engine valve. The valve actuator assembly further includes a first and second on/off valve in respective fluid communication with the first feedback channel and the second feedback channel to selectively exhaust the first and second feedback channel to control motion of the second spool valve. The second spool valve includes a detent feature operable to maintain the second spool valve in a center biased position.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {2010},

  month        = {1}

}

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