SAE J 1117-1975 Method of Measuring and Reporting the Pressure Differential-Flow Characteristics of a Hydraulic Fluid Power Valve Recommended Practice.pdf

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1、SAE Technical Standards Board Rules provide that: “This report is published by SAE to advance the state of technical and engineering sciences. The use of this report is entirelyvoluntary, and its applicability and suitability for any particular use, including any patent infringement arising therefro

2、m, is the sole responsibility of the user.”SAE reviews each technical report at least every five years at which time it may be reaffirmed, revised, or cancelled. SAE invites your written comments and suggestions.QUESTIONS REGARDING THIS DOCUMENT: (724) 772-8512 FAX: (724) 776-0243TO PLACE A DOCUMENT

3、 ORDER; (724) 776-4970 FAX: (724) 776-0790SAE WEB ADDRESS http:/www.sae.orgCopyright 1986 Society of Automotive Engineers, Inc.All rights reserved. Printed in U.S.A.SURFACEVEHICLE400 Commonwealth Drive, Warrendale, PA 15096-0001RECOMMENDEDPRACTICEJ1117REAF.MAR86Issued 1975-06Reaffirmed 1986-03Supers

4、eding J1117 SEP80METHOD OF MEASURING AND REPORTING THE PRESSURE DIFFERENTIAL-FLOW CHARACTERISTICS OF A HYDRAULIC FLUID POWER VALVEForewordThis Reaffirmed Document has been changed only to reflect the new SAE Technical Standards BoardFormat.As the flow passes through these valves, some power loss is

5、experienced due to restrictions and directionalchanges of the fluid resulting in a differential pressure. Flow is passed through the valve through the ports and inpositions as specified. Pressure is recorded at flow increments to produce a well defined curve. The tare loss ofthe test circuit is subt

6、racted for final data presentation.1. ScopeThis procedure applies to hydraulic fluid power valves as applied to self-propelled work machines asreferenced in SAE J1116.1.1 PurposeTo provide a uniform procedure for measuring and reporting the pressure losses associated withthe significant flow paths i

7、n a hydraulic fluid power valve.2. References2.1 Applicable PublicationsThe following publications form a part of the specification to the extent specifiedherein. Unless otherwise indicated the latest revision of SAE publications shall apply.2.1.1 SAE PUBLICATIONSAvailable from SAE, 400 Commonwealth

8、 Drive, Warrendale, PA 15096-0001.SAEARP24BDetermination of Hydraulic Pressure DropSAEJ1116Categories of Off-Road Self-Propelled Work MachinesSAEJ1117 SEP80Method of Measuring and Reporting the Pressure Differential-Flow Characteristics ofa Hydraulic Fluid Power Valve2.1.2 ANSI PUBLICATIONAvailable

9、from ANSI, 11 West 42nd Street, New York, NY 10036-8002.ANSI B93.2-1971American National Standard Glossary of Terms for Fluid Power, and Supplementsthereto (ISO/TC 131/SC1 (USA-2)3)ANSI Y14.17-1966American National Standard Fluid Power DiagramsSAE J1117 Reaffirmed MAR86-2-2.1.3 ASTM PUBLICATIONAvail

10、able from ASTM, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959.ASTMD445-1965American Society for Testing and Materials Standard Method of Test for Viscosity ofTransparent and Opaque Liquids2.1.4 ISO PUBLICATIONAvailable from ANSI, 11 West 42nd Street, New York, NY 10036-8002.ISO/R 1000-1969

11、International Standard Rules for the Use of Units of theInternational System of Unitsand a Selection of the Decimal Multiples and Submultiples of SI UnitsISO/R 1219-1970International Standard Graphical Symbols for Hydraulic and Pneumatic Equipmentand Accessories for Fluid Power Transmissions (Agrees

12、 with ANSI Y32.10-1967) 3. DefinitionsFor definitions of terms not herein defined, see ANSI B93.2-1971.3.1 Test FlowAny steady state flow rate required to conduct this test.3.2 Input PortAny port into which flow is directed for the purpose of this test.3.3 Output PortAny port from which flow exits f

13、or the purpose of this test.3.4 Tare PressureThe pressure loss between the pressure tapping points as generated by the test equipmentexclusive of the test valve.3.5 ControlAny externally adjustable feature integral with the test valve that varies the flow path and/or flow rate.3.6 Specified DataThat

14、 basic information furnished in the request for the test as indicated in Section 7.4. Units4.1 The International System of Units (SI) is used herein in accordance with ISO/R 1000-1969.4.2 Approximate SI conversion units appear before their “Customary U.S.“ counterparts.5. Graphic SymbolsGraphic symb

15、ols herein are in accordance with ISO/R 1219-1970 and ANSI/Y14.17-1966.Where ANSI/Y32.10-1967 and ANSI/Y14.7-1966 are not in agreement, ANSI/Y14.7-1966 governs.6. Letter SymbolsThe following letter symbols are used in this document:TABLE 1SIUnitU.S.UnitP Pressure differential (Pressure drop) kPa (ki

16、lopascal) psiPm Measured pressure differential kPa psiPt Tare pressure differential kPa psiP1 Input pressure reading kPa psiP2 Output pressure reading kPa psiQ Test flow L/min USGPMQm Specified maximum flow L/min USGPMSAE J1117 Reaffirmed MAR86-3-7. Summary Of Designated Information:7.1 Specify the

17、following information on all requests for this test:7.1.1 A description of valve.7.1.2 The type of fluid (if different than paragraph 12.1).7.1.3 The fluid temperature (if different from the standardized values in paragraph 12.2).7.1.4 The maximum flow for this test (Qm).7.1.5 The input port(s).7.1.

18、6 The output port(s).7.1.7 The control variable position(s).8. General Procedure8.1 Conduct the test in accordance with the fixed values specified by the test request.8.2 Use only standardized values, shown in Section 12, for catalog information and sales literature.8.3 Test and report of subplate m

19、ounted valves may be run with the subplate included. Reports shall explicitlyindicate how such valves were tested.9. Test Conditions AccuracyMaintain the test condition accuracy within the limits shown in the following table:10. Test Procedure10.1 Install the test valve in the test circuit (see Figu

20、re 1) using as input and output ports those indicated in the testrequest.10.2 Set the control variable(s) for the flow path indicated on the test request.10.3 Obtain enough data between zero flow and the specified maximum flow (Qm) to produce a well-defined curveas illustrated in Figure 3. If data i

21、s measured manually, record on a chart similar to Figure 2.10.4 Remove the test valve from the test circuit and connect the lines used in paragraph 8.1 to complete the testcircuit without the test valve per SAE/ARP 24B-1968 and repeat paragraph 10.3.TABLE 2TestConditionMaintainWithin Flow 2%Pressure

22、 2%Pressure Differential 4%Temperature 3 C (5F)Control Variable 2%SAE J1117 Reaffirmed MAR86-4-10.5 Determine the pressure differential (P) by subtracting the tare pressure differential (Pt) from the measuredpressure differential (Pm).10.6 Repeat the test procedure for other specified flow paths and

23、 control position.11. Data Presentation11.1 Plot a curve(s) of the pressure differential (P) versus flow rate (Q) using the data obtained as in paragraph10.5.11.2 Use Figure 3 as an example curve.11.3 Include the following information on the data plot:11.3.1 Valve description11.3.2 Type of fluid11.3

24、.3 Fluid temperature11.3.4 Input port(s) and size11.3.5 Output port(s) and size11.3.6 Control position11.3.7 Date of test11.3.8 Testing agency11.3.9 Output port pressure at maximum flow12. Standardized Values12.1 A fluid with a viscosity of 2126 mm2/s at 50C (105125 SUS at 122F) and 6.67.4 mm2/s at

25、90C (4850SUS at 194F) should be used.12.2 Fluid temperature should be 50C (122F).12.3 Use the maximum size for ports if more than one size is available.13. Identification StatementUse the following statement in catalogs and sales literature when electing tocomply with this voluntary standard: “Perfo

26、rmance data obtained and presented in accordance with SAERecommended Practice J1117 SEP80“.SAE J1117 Reaffirmed MAR86-5-FIGURE 1SCHEMATIC EXAMPLE OF A HYDRAULIC VALVE TEST SYSTEMFIGURE 2EXAMPLE OF A CHART FOR THE TEST DATASAE J1117 Reaffirmed MAR86-6-FIGURE 3EXAMPLE OF A PRESSURE DIFFERENTIAL VERSUS

27、 FLOW CURVEPREPARED BY THE SAE OFF-ROAD MACHINERY TECHNICAL COMMITTEE SC4HYDRAULIC FLUID POWER SYSTEMS AND COMPONENTSSAE J1117 Reaffirmed MAR86RationaleNot applicable.Relationship of SAE Standard to ISO StandardNot applicable.ApplicationThis SAE Recommended Practice provides a uniform procedure for

28、measuring and reportingthe pressure losses associated with the significant flow paths in a hydraulic fluid power valve.This procedure applies to hydraulic fluid power valves as applied to self-propelled work machines asreferenced in SAE J1116.Reference SectionSAE ARP 24BDetermination of Hydraulic Pr

29、essure DropSAE J1116Categories of Off-Road Self-Propelled Work MachinesSAEJ1117 SEP80ANSI B93.2-1971American National Standard Glossary of Terms for Fluid Power, and Supplementsthereto (ISO/TC 131/SC1 (USA-2)3)ANSI Y14.17-1966American National Standard Fluid Power DiagramsASTM D445-1965American Soci

30、ety for Testing and Materials Standard Method of Test for Viscosity ofTransparent and Opaque LiquidsISO/R 1000-1969International Standard Rules for the Use of Units of the International System of Unitsand a Selection of the Decimal Multiples and Submultiples of SI UnitsISO/R 1219-1970International S

31、tandard Graphical Symbols for Hydraulic and Pneumatic Equipmentand Accessories for Fluid Power Transmissions (Agrees with ANSI Y32.10-1967)Developed by the Off-Road Machinery Technical Committee SC4Hydraulic Fluid Power Systems and ComponentsSponsored by the SAE Off-Road Machinery Technical Committee