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WO2013142541A3 - Hydraulic accumulator pre-charge pressure detection - Google Patents

Hydraulic accumulator pre-charge pressure detection Download PDF

Info

Publication number
WO2013142541A3
WO2013142541A3 PCT/US2013/033040 US2013033040W WO2013142541A3 WO 2013142541 A3 WO2013142541 A3 WO 2013142541A3 US 2013033040 W US2013033040 W US 2013033040W WO 2013142541 A3 WO2013142541 A3 WO 2013142541A3
Authority
WO
WIPO (PCT)
Prior art keywords
pressure
hydraulic accumulator
charge pressure
pressure detection
data processor
Prior art date
Application number
PCT/US2013/033040
Other languages
French (fr)
Other versions
WO2013142541A2 (en
Inventor
Dayao Chen
Pengfei Ma
Tonglin Shang
Bryan J HILLMAN
Original Assignee
Caterpillar Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US13/427,095 external-priority patent/US9366269B2/en
Priority claimed from US13/427,072 external-priority patent/US8833143B2/en
Application filed by Caterpillar Inc. filed Critical Caterpillar Inc.
Priority to CN201380015083.5A priority Critical patent/CN104204544B/en
Priority to DE112013001599.4T priority patent/DE112013001599T5/en
Publication of WO2013142541A2 publication Critical patent/WO2013142541A2/en
Publication of WO2013142541A3 publication Critical patent/WO2013142541A3/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
    • F15B1/02—Installations or systems with accumulators
    • F15B1/04—Accumulators
    • F15B1/08—Accumulators using a gas cushion; Gas charging devices; Indicators or floats therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B19/00—Testing; Calibrating; Fault detection or monitoring; Simulation or modelling of fluid-pressure systems or apparatus not otherwise provided for
    • F15B19/005—Fault detection or monitoring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2201/00—Accumulators
    • F15B2201/30—Accumulator separating means
    • F15B2201/31—Accumulator separating means having rigid separating means, e.g. pistons
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2201/00—Accumulators
    • F15B2201/50—Monitoring, detection and testing means for accumulators
    • F15B2201/505—Testing of accumulators, e.g. for testing tightness
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2201/00—Accumulators
    • F15B2201/50—Monitoring, detection and testing means for accumulators
    • F15B2201/51—Pressure detection

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Supply Devices, Intensifiers, Converters, And Telemotors (AREA)

Abstract

A system (100) including a hydraulic accumulator (102), a pressure sensor (104), a fluid source (106) and a data processor (108) to detect a pre- charge pressure is provided. The hydraulic accumulator (102) includes first and second chambers (302, 304) and a separator (306) therebetween. The hydraulic accumulator (102) has an associated pre-charge pressure. The pressure sensor (104) coupled to the first chamber (302). The data processor (108) is configured to receive pressure readings from the pressure sensor (104). The data processor (108) is configured to determine a first and second rate of pressure changes, and a transition pressure between the first and second rates. The approximate pre- charge pressure is determined based on the transition pressure.
PCT/US2013/033040 2012-03-22 2013-03-20 Hydraulic accumulator pre-charge pressure detection WO2013142541A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201380015083.5A CN104204544B (en) 2012-03-22 2013-03-20 Hydraulic accumulator Preliminary pressure-filled detects
DE112013001599.4T DE112013001599T5 (en) 2012-03-22 2013-03-20 Hydraulic accumulator prefill pressure detection

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US13/427,095 US9366269B2 (en) 2012-03-22 2012-03-22 Hydraulic accumulator health diagnosis
US13/427,095 2012-03-22
US13/427,072 2012-03-22
US13/427,072 US8833143B2 (en) 2012-03-22 2012-03-22 Hydraulic accumulator pre-charge pressure detection

Publications (2)

Publication Number Publication Date
WO2013142541A2 WO2013142541A2 (en) 2013-09-26
WO2013142541A3 true WO2013142541A3 (en) 2013-11-14

Family

ID=49223450

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2013/033040 WO2013142541A2 (en) 2012-03-22 2013-03-20 Hydraulic accumulator pre-charge pressure detection

Country Status (3)

Country Link
CN (1) CN104204544B (en)
DE (1) DE112013001599T5 (en)
WO (1) WO2013142541A2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11293545B2 (en) 2016-08-03 2022-04-05 Audi Ag Hydraulic system for an automatic transmission of a motor vehicle

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2520407A (en) * 2013-10-03 2015-05-20 Caterpillar Sarl Hydraulic accumulator pre-charge pressure detection for hydraulic braking system
GB2528321A (en) 2014-07-18 2016-01-20 Airbus Operations Ltd Determining integrity of braking control system
GB2528322B (en) * 2014-07-18 2020-08-05 Airbus Operations Ltd Determining integrity of braking control system
CN104897351B (en) * 2015-05-22 2017-06-30 合肥通用机械研究院 Method and system for testing air tightness of welding diaphragm type energy storage pressure container
DE102016214370B3 (en) * 2016-08-03 2017-12-14 Audi Ag Hydraulic system for an automatic transmission of a motor vehicle
CN108361243A (en) * 2018-02-27 2018-08-03 龙工(福建)液压有限公司 A kind of hydraulic cylinder detection method
AT522380B1 (en) * 2019-03-20 2021-05-15 Engel Austria Gmbh Hydraulic system for a molding machine
CN113418663B (en) * 2020-12-31 2024-05-03 湖南江河机电自动化设备股份有限公司 A method for detecting leakage in hydraulic system of turbine speed governor

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0652211B2 (en) * 1987-09-14 1994-07-06 宣行 杉村 Accumulator gas filling pressure measurement method
JPH07139501A (en) * 1993-11-12 1995-05-30 Nok Corp Inspection method of pressure vessel
JP2001013044A (en) * 1999-06-28 2001-01-19 Nok Corp Machine and method for inspection of pressure vessel
JP2004156943A (en) * 2002-11-05 2004-06-03 Nok Corp Measuring instrument and measuring method for charged pressure
US20110264339A1 (en) * 2010-04-23 2011-10-27 Gm Global Technology Operations, Inc. Accumulator working volume management and adaptation

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3662333A (en) * 1970-09-08 1972-05-09 Bendix Corp Hydraulic accumulator charge detector and indicating system
US20120273076A1 (en) * 2011-04-28 2012-11-01 Robert Bosch Gmbh Compact hydraulic accumulator

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0652211B2 (en) * 1987-09-14 1994-07-06 宣行 杉村 Accumulator gas filling pressure measurement method
JPH07139501A (en) * 1993-11-12 1995-05-30 Nok Corp Inspection method of pressure vessel
JP2001013044A (en) * 1999-06-28 2001-01-19 Nok Corp Machine and method for inspection of pressure vessel
JP2004156943A (en) * 2002-11-05 2004-06-03 Nok Corp Measuring instrument and measuring method for charged pressure
US20110264339A1 (en) * 2010-04-23 2011-10-27 Gm Global Technology Operations, Inc. Accumulator working volume management and adaptation

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11293545B2 (en) 2016-08-03 2022-04-05 Audi Ag Hydraulic system for an automatic transmission of a motor vehicle

Also Published As

Publication number Publication date
DE112013001599T5 (en) 2014-12-31
CN104204544A (en) 2014-12-10
WO2013142541A2 (en) 2013-09-26
CN104204544B (en) 2016-05-11

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