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 1998 Society of Automotive Engineers, Inc.All rights reserved. Printed in U.S.A.SURFACEVEHICLE400 Commonwealth Drive, Warrendale, PA 15096-0001RECOMMENDEDPRACTICESubmitted for recognition as an American National Sta
4、ndardJ2437ISSUEDDEC1998Issued 1998-12Air Starter Motor Test Procedure1. ScopeThis SAE Recommended Practice provides a standard procedure for testing the output performanceand plotting the performance curve of air starting motors.2. References2.1 Related PublicationsThe following publications are pro
5、vided for information purposes only and are not arequired part of this document.2.1.1 SAE PUBLICATIONSAvailable from SAE, 400 Commonwealth Drive, Warrendale, PA 15096-0001.SAE J543Starting Motor Pinions and Ring GearsSAE J544Electric Starting Motor Test Procedure2.1.2 ISO PUBLICATIONAvailable from A
6、NSI, 11 West 42nd Street, New York, NY 10036-8002.ISO 7650Commercial vehicles and busesMounting dimensions for starter motors of type 1, 2, 3, and 43. Description3.1 Testing ProcedureThe starter shall be mounted in a test stand as shown schematically in Figure 1.Performance curves are established by
7、 running the starting motor in one of two methods. Method A involvesplotting a curve from discrete points while Method B is achieved by operating the motor in a continuous modewhile the output is automatically recorded and/or plotted. Deviation from either of these two methods shall benoted on the p
8、erformance curve. Air pressure shall be measured at the starter inlet port and adjusted asrequired to maintain a constant value during the entire test. The air pressure should not exceed therecommendation of the manufacturer. All torque measurements should be reflected to the starter output shaft.Am
9、bient air temperature should be recorded. The supply air moisture and lubricant content should be noted.All data shall be reduced to the standard conditions of 1 Bar (14.7 psig) and 21 C (70 F).3.1.1 TEST METHOD ARun the starting motor at various discrete torque loads and record the air inlet and ex
10、haustpressure, air temperature, torque, air flow, and speed. Sufficient points should be recorded and a linearregression method should be used to generate smooth torque, power, and flow curves from the respectivedata points. A typical performance curve is shown in Figure 2.SAE J2437 Issued DEC1998-2
11、-FIGURE 1STARTER MOTOR PERFORMANCE TEST ARRANGEMENTFIGURE 2STARTER MOTOR PERFORMANCE CURVES AT SPECIFIC PRESSUREAND AMBIENT TEMPERATURESAE J2437 Issued DEC1998-3-3.1.2 TEST METHOD BThis method differs from Method A in that the starter is operated continuously whiledecreasing the torque load from the
12、 stall point. Data points are recorded at appropriate speeds throughoutthe performance range. The resulting curve is identical to that developed from Method A.3.2 TemperaturePerformance curves can be generated at ambient temperature conditions of 40, 29, 7, 21,and 82 C (40, 20, 20, 70, and 180 F). S
13、tandard data is taken at 21 C (70 F).3.3 PressuresIt is recommended that performance curves be developed at standard inlet pressures of 2, 4, 6, 8,10, 12, 15, 20, and 30 Bar (30, 60, 90, 120, 150, 180, 225, 290, and 435 psig).3.4 InstrumentationThe air pressure sensor and air flow meter shall have a
14、n accuracy of 1% of the full scalereading (full scale value not to exceed the maximum performance reading by more than 50%.) The speedsensing device and the torque measuring device shall have an accuracy of 1% of the actual reading.3.5 Cranking SpeedThe required engine cranking speed can be matched
15、to the starter by the starter pinion andengine ring gear ratio. The starter speed at maximum power shall be equal to or greater than the requiredreflected engine cranking start speed. Ambient conditions at the application should, of course, be considered.PREPARED BY THE SAE STARTER MOTOR STANDARDS C
16、OMMITTEESAE J2437 Issued DEC1998RationalePrior to 1996, SAE addressed only a test procedure for generating performance curves for electricstarting motors, SAE J544. Review of this technical report indicated that a broader view of startingmotors was needed that involved a recommended test procedure f
17、or development of performancecurves of air starting motors. SAE J2437 addresses this issue.Relationship of SAE Standard to ISO StandardNot available.ApplicationThis SAE Recommended Practice provides standardized criteria for testing air starter motors.Reference SectionSAE J543Starting Motor Pinions and Ring GearsSAE J544Electric Starting Motor Test ProcedureISO 7650Commercial vehicles and busesMounting dimensions for starter motors of type 1, 2, 3, and 4Developed by the SAE Starter Motor Standards Committee
