WO2010054708A1 - Procédé pour contrôler des composants à commande hydraulique - Google Patents

Procédé pour contrôler des composants à commande hydraulique Download PDF

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Publication number
WO2010054708A1
WO2010054708A1 PCT/EP2009/005967 EP2009005967W WO2010054708A1 WO 2010054708 A1 WO2010054708 A1 WO 2010054708A1 EP 2009005967 W EP2009005967 W EP 2009005967W WO 2010054708 A1 WO2010054708 A1 WO 2010054708A1
Authority
WO
WIPO (PCT)
Prior art keywords
determined
pneumatic
function characteristic
component
test
Prior art date
Application number
PCT/EP2009/005967
Other languages
German (de)
English (en)
Inventor
Carl Holger
Original Assignee
Thyssenkrupp Egm Gmbh
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
Application filed by Thyssenkrupp Egm Gmbh filed Critical Thyssenkrupp Egm Gmbh
Publication of WO2010054708A1 publication Critical patent/WO2010054708A1/fr

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
    • 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
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/12—Detecting malfunction or potential malfunction, e.g. fail safe; Circumventing or fixing failures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/12—Detecting malfunction or potential malfunction, e.g. fail safe; Circumventing or fixing failures
    • F16H2061/1208—Detecting malfunction or potential malfunction, e.g. fail safe; Circumventing or fixing failures with diagnostic check cycles; Monitoring of failures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/12—Detecting malfunction or potential malfunction, e.g. fail safe; Circumventing or fixing failures
    • F16H2061/1256—Detecting malfunction or potential malfunction, e.g. fail safe; Circumventing or fixing failures characterised by the parts or units where malfunctioning was assumed or detected
    • F16H2061/126—Detecting malfunction or potential malfunction, e.g. fail safe; Circumventing or fixing failures characterised by the parts or units where malfunctioning was assumed or detected the failing part is the controller
    • F16H2061/1264—Hydraulic parts of the controller, e.g. a sticking valve or clogged channel

Definitions

  • the invention relates to a method for testing hydraulically actuated components referred to in the preamble of claim 1 Art.
  • a motor vehicle automatic transmission is checked by means of a suitable oil, which can be found this again after completion of the test.
  • test medium oil causes high costs, which are also caused by the fact that the oil after the test again the hydraulically operable components again and finally has to be recycled or recycled. Furthermore, the oil used often causes pollution of the environment and in particular of the work / strigt- zes, so that here sometimes expensive cleaning measures are necessary, which lead to further time or cost.
  • the object of the invention is to specify a method for testing hydraulically actuatable components of the type mentioned in the preamble of claim 1, which makes it possible to reduce the recycling effort caused by the test medium used.
  • the invention detaches itself from the thought for which
  • the invention is characterized in that the component with respect to the functional test with a gaseous test medium is charged. Furthermore, a pneumatic functional characteristic curve of the component is determined, so that it is determined on the basis of the determined pneumatic function characteristic curve whether the component corresponds to predetermined requirements.
  • test medium As a gaseous test medium, various gases or gas mixtures can be used, which also allows the use of ambient air as a test medium. This results in particular the advantage that the cost of the test medium is very low and the cost of the preparation of the test medium for use for testing is reduced.
  • the respective functional characteristics are dependent on the gaseous test medium, so that different pneumatic function characteristics result depending on the test medium.
  • a corresponding reference characteristic must first be determined by means of which the specific pneumatic function characteristic of the respective hydraulically actuable component can be interpreted. Due to the deviations of the specific pneumatic function characteristic from the previously determined reference characteristic curve, With knowledge of the test media-specific dependencies, the functionality of the component can be quickly determined and errors localized.
  • an advantageous development of the invention provides that based on a reference component, a pneumatic reference function characteristic is determined and that it is determined by comparison of the pneumatic reference function characteristic with a determined for a specimen pneumatic function curve, if the DUT meets predetermined requirements.
  • This has the advantage that it can be determined very easily and quickly whether a test object meets the quality requirements or must be reworked or rejected.
  • a further advantageous embodiment of the invention results from the fact that a dependence of a hydraulic reference function characteristic of a reference component is determined by a pneumatic reference Funktkionskennline the component. This has the advantage that conversion factors or conversion methods can be determined, which makes it possible to convert an existing hydraulic reference function characteristic into a pneumatic reference function characteristic without having to separately check the respective component. This implies, in particular, time and cost advantages.
  • a further advantageous embodiment of the invention is that it is determined by comparing the determined for the test pneumatic function curve with the pneumatic reference function curve, whether the hydraulic function characteristic of the component corresponds to predetermined requirements.
  • a further advantageous refinement of the invention consists in converting the pneumatic functional characteristic curve determined for the test specimen into a hydraulic function characteristic curve, using the determined dependence of the hydraulic reference function characteristic on the pneumatic reference function characteristic.
  • An expedient development of the invention provides that the component is a part of a motor vehicle, in particular a part of an automatic transmission of a motor vehicle. This gives rise to the possibility that the method can be used for the test, in particular for complex assemblies, such as circuit boards for automatic transmission of motor vehicles. Furthermore, there is the advantage that thereby the cost of the test z. B. an automatic transmission for a motor vehicle can be lowered or in a scheduled period by Redu tion or elimination of the increased recycling costs, which would result from the use of liquid test media, more candidates can be tested.
  • FIG. 1 is a highly schematic representation of a circuit board of an automatic transmission for a motor vehicle as an application example of a method according to the invention
  • FIG. 1 shows an application example of a method according to the invention for testing hydraulically actuatable components.
  • the application example is a circuit board of an automatic transmission of a motor vehicle, which is also referred to below as a circuit board and is shown schematically in FIG.
  • one or more clutches are opened or closed at the same time or in a predetermined sequence.
  • the individual clutches are controlled hydraulically as a rule, so that the automatic transmission for a motor vehicle has an oil pump and a plurality of hydraulic control units.
  • the pumped through the oil pump pressure oil is supplied via circuit boards of the individual hydraulic control units the individual clutches.
  • an embodiment of the exemplary embodiment of an automatic transmission of a motor vehicle in addition to a Gerete horrungs- device on various solenoid valves For a pressure-free change of speed levels 2 variably controllable solenoid valves are used in the illustrated circuit board, which change their opening cross-section as a function of the applied control current. This makes it possible to vary the flow rate or the oil pressure.
  • the test apparatus 4 initially has a control unit 6, which controls the circuit board 2, in particular re the solenoid valves for controlling the clutches, with a control current drives.
  • the control current in the variable solenoid valves causes a variable orifice to open according to the applied control current, thereby changing the pressure of the flow medium.
  • this is pressurized with compressed air, so that the conventional oil for the operation of the circuit board 2 is replaced by compressed and purified ambient air.
  • the test device 4 a compressed air supply unit 8, which cleans and compresses the ambient air for the application of the circuit board 2.
  • the compressed air supply unit 8 are downstream of compressed air measuring means 10, which serve to measure the compressed air loading of the circuit board 2 with compressed air and adapted according to the respective test requirements.
  • the testing device 4 has further compressed air measuring means 12 in order to measure the pressure at the respective outlet of the hydraulically actuable components, in particular the variable solenoid valves.
  • FIG. 2 shows a qualitative reference function characteristic curve 18 for the test medium air, which can be used to test the circuit board 2.
  • the reference function characteristic curve 18 for the test medium air is based on the test of a variable solenoid valve of the circuit board 2.
  • the abscissa shows the control current 20 for the variable solenoid valve and the ordinate represents the pressure 22, which at
  • Output of the variable solenoid valve in dependence of the control current 20 can be measured.
  • the diagram likewise shows an exemplary reference function characteristic 24 for the test medium oil.
  • Both the reference function characteristic curve 24 for the test medium oil and the reference function characteristic curve 18 for the test medium air show various interpolation points 26, 26 'which can be used to develop a mathematical relationship between various function parameters.
  • FIG. 2 clarifies that from a reference function characteristic curve 18 for the test medium air it is possible to conclude the function of a hydraulically actuatable component when using the test / operating medium oil.
  • the mathematical relationship of the reference function characteristics 18, 24 can be determined in particular by tests which may be dependent on the specific test medium and, for example, on the respective component and the corresponding intended use. For better clarity, in each case only one interpolation point of the respective reference function characteristic 18, 24 is provided with the respective reference numerals 26, 26 '. To determine the dependencies between the various parameters and parameters u.a. A series of tests is necessary, so that the diagram of FIG. 2 represents only one possibility for converting the measured values for the test medium air into values for the test medium oil.
  • the components of a device for carrying out the method according to the invention can be connected to computer technology.
  • the computer technology means can control or regulate the components of the device and ultimately also serve to record and evaluate test or test parameters.
  • the components of the device can also be mutually networked control / regulation technology, so that a rapid adaptation of manipulated variables can be done.
  • FIG. 1 The possibility of networking, control or regulation is shown symbolically in FIG.
  • the method according to the invention can be used both computer-aided and manually.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)

Abstract

L'invention concerne un procédé pour contrôler des composants (2) à commande hydraulique. Conformément au procédé, le composant (2) est sollicité avec un fluide de contrôle gazeux pour réaliser une fonction de contrôle, et une caractéristique fonctionnelle pneumatique du composant (2) est déterminée, de sorte qu'à l'aide de la caractéristique fonctionnelle pneumatique déterminée, on puisse établir si le composant (2) satisfait à des exigences prédéterminées.
PCT/EP2009/005967 2008-11-12 2009-08-18 Procédé pour contrôler des composants à commande hydraulique WO2010054708A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE102008056984.4 2008-11-12
DE102008056984 2008-11-12
DE102008060253.1 2008-12-03
DE102008060253A DE102008060253A1 (de) 2008-11-12 2008-12-03 Verfahren zur Prüfung von hydraulikbetätigbaren Bauteilen

Publications (1)

Publication Number Publication Date
WO2010054708A1 true WO2010054708A1 (fr) 2010-05-20

Family

ID=41395933

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2009/005967 WO2010054708A1 (fr) 2008-11-12 2009-08-18 Procédé pour contrôler des composants à commande hydraulique

Country Status (2)

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DE (1) DE102008060253A1 (fr)
WO (1) WO2010054708A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10920805B2 (en) 2017-10-31 2021-02-16 Deere & Company System and method for detecting a connector failure in an agricultural apparatus

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5113705A (en) * 1990-12-21 1992-05-19 Siemens Automotive L.P. Functional testing of solenoid valves in air
US5694808A (en) * 1993-11-03 1997-12-09 Itt Automotive Europe Gmbh System for testing the function of a hydraulic device
GB2360078A (en) * 2000-01-21 2001-09-12 Wren Engineering Ltd Apparatus for testing solenoid valves
WO2004083650A1 (fr) * 2003-03-19 2004-09-30 Daimlerchrysler Ag Procede pour l'essai de fonctionnement d'une soupape hydraulique et banc d'essai pour executer ce procede

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5322003A (en) * 1992-09-30 1994-06-21 The United States Of America As Represented By The Secretary Of The Navy Modular hydraulic control system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5113705A (en) * 1990-12-21 1992-05-19 Siemens Automotive L.P. Functional testing of solenoid valves in air
US5694808A (en) * 1993-11-03 1997-12-09 Itt Automotive Europe Gmbh System for testing the function of a hydraulic device
GB2360078A (en) * 2000-01-21 2001-09-12 Wren Engineering Ltd Apparatus for testing solenoid valves
WO2004083650A1 (fr) * 2003-03-19 2004-09-30 Daimlerchrysler Ag Procede pour l'essai de fonctionnement d'une soupape hydraulique et banc d'essai pour executer ce procede

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DE102008060253A1 (de) 2010-07-29

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