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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 entirely voluntary, and its applicability and suitability for any particular use, including any patent infringement arising therefr
2、om, 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) 776-0243 TO PLACE A DOCU
3、MENT ORDER; (724) 776-4970 FAX: (724) 776-0790 SAE WEB ADDRESS http:/www.sae.org Copyright 1986 Society of Automotive Engineers, Inc. All rights reserved.Printed in U.S.A. SURFACE VEHICLE 400 Commonwealth Drive, Warrendale, PA 15096-0001 RECOMMENDED PRACTICE J1117 REAF. MAR86 Issued1975-06 Reaffirme
4、d1986-03 Superseding J1117 SEP80 METHOD OF MEASURING AND REPORTING THE PRESSURE DIFFERENTIAL-FLOW CHARACTERISTICS OF A HYDRAULIC FLUID POWER VALVE ForewordThis Reaffirmed Document has been changed only to reflect the new SAE Technical Standards Board Format. As the flow passes through these valves,
5、some power loss is experienced due to restrictions and directional changes of the fluid resulting in a differential pressure. Flow is passed through the valve through the ports and in positions as specified. Pressure is recorded at flow increments to produce a well defined curve. The tare loss of th
6、e test circuit is subtracted for final data presentation. 1.ScopeThis procedure applies to hydraulic fluid power valves as applied to self-propelled work machines as referenced in SAE J1116. 1.1PurposeTo provide a uniform procedure for measuring and reporting the pressure losses associated with the
7、significant flow paths in a hydraulic fluid power valve. 2.References 2.1Applicable PublicationsThe following publications form a part of the specification to the extent specified herein. Unless otherwise indicated the latest revision of SAE publications shall apply. 2.1.1SAE PUBLICATIONSAvailable f
8、rom SAE, 400 Commonwealth Drive, Warrendale, PA 15096-0001. SAE ARP 24BDetermination of Hydraulic Pressure Drop SAE J1116Categories of Off-Road Self-Propelled Work Machines SAE J1117 SEP80Method of Measuring and Reporting the Pressure Differential-Flow Characteristics of a Hydraulic Fluid Power Valv
9、e 2.1.2ANSI PUBLICATIONAvailable from ANSI, 11 West 42nd Street, New York, NY 10036-8002. ANSI B93.2-1971American National Standard Glossary of Terms for Fluid Power, and Supplements thereto (ISO/TC 131/SC1 (USA-2)3) ANSI Y14.17-1966American National Standard Fluid Power Diagrams SAE J1117 Reaffirme
10、d MAR86 -2- 2.1.3ASTM PUBLICATIONAvailable from ASTM, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959. ASTM D445-1965American Society for Testing and Materials Standard Method of Test for Viscosity of Transparent and Opaque Liquids 2.1.4ISO PUBLICATIONAvailable from ANSI, 11 West 42nd Street
11、, New York, NY 10036-8002. ISO/R 1000-1969International Standard Rules for the Use of Units of the International System of Units and a Selection of the Decimal Multiples and Submultiples of SI Units ISO/R 1219-1970International Standard Graphical Symbols for Hydraulic and Pneumatic Equipment and Acc
12、essories for Fluid Power Transmissions (Agrees with ANSI Y32.10-1967) 3.DefinitionsFor definitions of terms not herein defined, see ANSI B93.2-1971. 3.1Test FlowAny steady state flow rate required to conduct this test. 3.2Input PortAny port into which flow is directed for the purpose of this test. 3
13、.3Output PortAny port from which flow exits for the purpose of this test. 3.4Tare PressureThe pressure loss between the pressure tapping points as generated by the test equipment exclusive of the test valve. 3.5ControlAny externally adjustable feature integral with the test valve that varies the flo
14、w path and/or flow rate. 3.6Specified DataThat basic information furnished in the request for the test as indicated in Section 7. 4.Units 4.1The International System of Units (SI) is used herein in accordance with ISO/R 1000-1969. 4.2Approximate SI conversion units appear before their “Customary U.S
15、.“ counterparts. 5.Graphic SymbolsGraphic symbols 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 1 SI Unit U.S.
16、 Unit PPressure differential (Pressure drop)kPa (kilopascal)psi PmMeasured pressure differentialkPapsi PtTare pressure differentialkPapsi P1Input pressure readingkPapsi P2Output pressure readingkPapsi QTest flowL/minUSGPM QmSpecified maximum flowL/minUSGPM SAE J1117 Reaffirmed MAR86 -3- 7.Summary Of
17、 Designated Information: 7.1Specify the following information on all requests for this test: 7.1.1A description of valve. 7.1.2The type of fluid (if different than paragraph 12.1). 7.1.3The fluid temperature (if different from the standardized values in paragraph 12.2). 7.1.4The maximum flow for thi
18、s test (Qm). 7.1.5The input port(s). 7.1.6The output port(s). 7.1.7The control variable position(s). 8.General Procedure 8.1Conduct the test in accordance with the fixed values specified by the test request. 8.2Use only standardized values, shown in Section 12, for catalog information and sales lite
19、rature. 8.3Test and report of subplate mounted valves may be run with the subplate included. Reports shall explicitly indicate how such valves were tested. 9.Test Conditions AccuracyMaintain the test condition accuracy within the limits shown in the following table: 10.Test Procedure 10.1 Install th
20、e test valve in the test circuit (see Figure 1) using as input and output ports those indicated in the test request. 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-defin
21、ed curve as illustrated in Figure 3. If data is 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 test circuit without the test valve per SAE/ARP 24B-1968 and repeat paragraph 10.3. T
22、ABLE 2 Test Condition Maintain Within Flow2% Pressure2% Pressure Differential4% Temperature3 C (5 F) Control Variable2% SAE J1117 Reaffirmed MAR86 -4- 10.5 Determine the pressure differential (P) by subtracting the tare pressure differential (Pt) from the measured pressure differential (Pm). 10.6 Re
23、peat the test procedure for other specified flow paths and control position. 11.Data Presentation 11.1 Plot a curve(s) of the pressure differential (P) versus flow rate (Q) using the data obtained as in paragraph 10.5. 11.2 Use Figure 3 as an example curve. 11.3 Include the following information on
24、the data plot: 11.3.1 Valve description 11.3.2 Type of fluid 11.3.3 Fluid temperature 11.3.4 Input port(s) and size 11.3.5 Output port(s) and size 11.3.6 Control position 11.3.7 Date of test 11.3.8 Testing agency 11.3.9 Output port pressure at maximum flow 12.Standardized Values 12.1 A fluid with a
25、viscosity of 2126 mm2/s at 50C (105125 SUS at 122F) and 6.67.4 mm2/s at 90C (4850 SUS 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 s
26、ales literature when electing to comply with this voluntary standard: “Performance data obtained and presented in accordance with SAE Recommended Practice J1117 SEP80“. SAE J1117 Reaffirmed MAR86 -5- FIGURE 1SCHEMATIC EXAMPLE OF A HYDRAULIC VALVE TEST SYSTEM FIGURE 2EXAMPLE OF A CHART FOR THE TEST D
27、ATA SAE J1117 Reaffirmed MAR86 -6- FIGURE 3EXAMPLE OF A PRESSURE DIFFERENTIAL VERSUS FLOW CURVE PREPARED BY THE SAE OFF-ROAD MACHINERY TECHNICAL COMMITTEE SC4 HYDRAULIC FLUID POWER SYSTEMS AND COMPONENTS SAE J1117 Reaffirmed MAR86 RationaleNot applicable. Relationship of SAE Standard to ISO Standard
28、Not applicable. ApplicationThis SAE Recommended Practice provides a uniform procedure for measuring and reporting the 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
29、machines as referenced in SAE J1116. Reference Section SAE ARP 24BDetermination of Hydraulic Pressure Drop SAE J1116Categories of Off-Road Self-Propelled Work Machines SAE J1117 SEP80 ANSI B93.2-1971American National Standard Glossary of Terms for Fluid Power, and Supplements thereto (ISO/TC 131/SC1
30、 (USA-2)3) ANSI Y14.17-1966American National Standard Fluid Power Diagrams ASTM D445-1965American Society for Testing and Materials Standard Method of Test for Viscosity of Transparent and Opaque Liquids ISO/R 1000-1969International Standard Rules for the Use of Units of the International System of
31、Units and a Selection of the Decimal Multiples and Submultiples of SI Units ISO/R 1219-1970International Standard Graphical Symbols for Hydraulic and Pneumatic Equipment and Accessories for Fluid Power Transmissions (Agrees with ANSI Y32.10-1967) Developed by the Off-Road Machinery Technical Committee SC4Hydraulic Fluid Power Systems and Components Sponsored by the SAE Off-Road Machinery Technical Committee