1、Designation: D7320 12Standard Test Method forEvaluation of Automotive Engine Oils in the Sequence IIIG,Spark-Ignition Engine1This standard is issued under the fixed designation D7320; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision,
2、 the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.INTRODUCTIONThe test method described in this standard can be used by any properly equipped laboratory; it doesnot re
3、quire the assistance of anyone outside that laboratory. However, the ASTM Test MonitoringCenter (TMC)2provides reference oils and an assessment of the test results obtained on those oils bythe laboratory (see Annex A1). By these means, the laboratory will know whether their use of the testmethod giv
4、es results statistically similar to those obtained by other laboratories. Furthermore, variousagencies require that a laboratory utilize the TMC services in seeking qualification of oils againstspecifications. For example, the U.S. Army imposes such a requirement in connection with severalArmy engin
5、e lubricating oil specifications.Accordingly, this test method is written for use by laboratories that utilize the TMC services.Laboratories that choose not to use those services may simply ignore those portions of the test methodthat refer to the TMC.This test method may be modified by means of Inf
6、ormation Letters issued by the TMC. In addition,the TMC may issue supplementary memoranda related to the test method (see A1.8).1. Scope*1.1 This test method covers an engine test procedure forevaluating automotive engine oils for certain high-temperatureperformance characteristics, including oil th
7、ickening, varnishdeposition, oil consumption, as well as engine wear. Such oilsinclude both single viscosity grade and multiviscosity gradeoils that are used in both spark-ignition, gasoline-fueledengines, as well as in diesel engines.1.1.1 Additionally, with nonmandatory supplemental re-quirements,
8、 a IIIGA Test (Mini Rotary Viscometer and ColdCranking Simulator measurements), a IIIGVS Test (EOTviscosity increase measurement), or a IIIGB Test (phosphorousretention measurement) can be conducted. These supplementaltest procedures are contained in Appendixes Appendix X1,Appendix X2, and Appendix
9、X3, respectively.NOTE 1Companion test methods used to evaluate engine oil perfor-mance for specification requirements are discussed in SAE J304.1.2 The values stated in SI units are to be regarded asstandard. No other units of measurement are included in thisstandard.1.2.1 ExceptionWhere there is no
10、 direct SI equivalentsuch as screw threads, national pipe threads/diameters, andtubing size.1.3 This standard does not purport to address all of thesafety concerns, if any, associated with its use. It is theresponsibility of the user of this standard to establish appro-priate safety and health pract
11、ices and determine the applica-bility of regulatory limitations prior to use. Specific warningstatements are provided in 6.14.1.1 and 7.1.1.4 This test method is arranged as follows:SectionIntroductionScope 1Referenced Documents 2Terminology 3Summary of Test Method 4Significance and Use 5Apparatus 6
12、Laboratory 6.1Drawings 6.2Specified Equipment 6.3Test Engine 6.4Engine Parts 6.4.1Engine Speed and Load Control 6.51This test method is under the jurisdiction of ASTM Committee D02 onPetroleum Products and Lubricants and is the direct responsibility of SubcommitteeD02.B0.01 on Passenger Car Engine O
13、ils.Current edition approved April 15, 2012. Published September 2012. Originallyapproved in 2006. Last previous edition approved in 2011 as D732011a. DOI:10.1520/D7320-12.2Until the next revision of this test method, the ASTM Test Monitoring Centerwill update changes in the test method by means of
14、information letters. Informationletters may be obtained from theASTM Test Monitoring Center, 6555 PennAvenue,Pittsburgh, PA 15206-4489. Attention: Administrator. This edition incorporatesrevisions in all information letters through No. 113.1*A Summary of Changes section appears at the end of this st
15、andard.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.SectionFluid Conditioning Module 6.6Engine Cooling System 6.6.1Flushing Tank 6.7Coolant Mixing Tank 6.8Condenser Cooling Systems 6.9Engine Oil-Cooling System 6.10Fuel System 6.11I
16、nduction Air Supply Humidity, Temperature, and Pressure 6.12Temperature Measurement 6.13Thermocouple Location 6.13.1Air-to-Fuel Ratio Determination 6.14Injector Flow Testing 6.14.1Exhaust and Exhaust Back Pressure Systems 6.15Blowby Flow Rate Measurement 6.16Pressure Measurement and Sensor Location
17、6.17Reagents and Materials 7Test Fuel 7.1Engine and Condenser Coolant 7.2Coolant Additive 7.3Coolant Preparation 7.4Pre-Test Cleaning Materials 7.5Sealing and Anti-seize Compounds 7.6Test Oil Sample Requirements 8Preparation of Apparatus 9Condenser Cleaning 9.1Intake Manifold Cleaning 9.2Cleaning of
18、 Engine Parts (other than the block and heads) 9.3Connecting Rod Cleaning 9.4Engine Block Cleaning 9.5Cylinder Head Cleaning 9.6Engine Build-up Procedure 9.7General Information 9.7.1Special Parts 9.7.2Hardware Information 9.7.3Fastener Torque Specifications and Torquing Procedures 9.7.4Main Bearing
19、Cap Bolts 9.7.4.1Cylinder Head Bolts 9.7.4.2Torques for Miscellaneous Bolts, Studs, and Nuts 9.7.4.3Parts Replacement 9.8Engine Block Preparation 9.9Piston Fitting and Numbering 9.10Piston Ring Fitting 9.10.1Pre-Test Camshaft and Lifter Measurements 9.11Camshaft Bearing Installation 9.12Camshaft Ins
20、tallation 9.13Main Bearings 9.14Crankshaft Installation 9.14.1Main Bearing Cap Installation 9.14.2Crankshaft Sprocket 9.15Camshaft Sprocket and Timing Chain 9.16Crankshaft End Play 9.17Piston Pin Installation 9.18Piston Installation 9.18.1Harmonic Balancer 9.19Connecting Rod Bearings 9.20Engine Fron
21、t Cover 9.21Coolant Inlet Adapter 9.22Oil Dipstick Hole 9.23Oil Pan 9.24Cylinder Head Assembly 9.25Adjustment of Valve Spring Loads 9.26Cylinder Head Installation 9.27Hydraulic Valve Lifters 9.28Pushrods 9.29Valve Train Loading 9.30Intake Manifold 9.31Rocker Covers 9.32Water Inlet Adapter 9.33Conden
22、ser 9.34Coolant Outlet Adapter 9.35Oil Filter Adapter 9.36Oil Sample Valve 9.37Ignition System 9.38Throttle Body 9.39Accessory Drive Units 9.40Exhaust Manifolds, Water-Cooled 9.41Engine Flywheel 9.42SectionPressure Checking of Engine Coolant System 9.43Lifting of Assembled Engines 9.44Mounting the E
23、ngine on the Test Stand 9.45External Cooling System Cleaning 9.46Engine Coolant Jacket Cleaning (Flushing) 9.47Coolant Charging 9.48Test Oil Charging 9.49Engine Oil Pump Priming 9.50Calibration 10Laboratory and Engine Test Stand Calibration 10.1Testing of Reference Oils 10.2Reference Oil Test Freque
24、ncy 10.3Reporting of Reference Oil Test Results 10.4Evaluation of Reference Oil Test Results 10.5Status of Non-Reference Oil Tests Relative to ReferenceOil Test10.6Status of Test Stands Used for Non-Standard Tests 10.7Data Acquisition and Control 10.8Sample Rate 10.8.1Measurement Accuracy 10.8.2Temp
25、erature 10.8.3Pressure 10.8.4Flow 10.8.5Speed 10.8.6Load 10.8.7Measurement Resolution 10.8.8System Time Response 10.8.9Quality Index 10.8.10Engine Operating Procedure 11Dipstick and Hole Plug 11.1Dipstick Hole O-ring 11.2Engine Start-up and Shutdown Procedures 11.3Start-up 11.4Scheduled Shutdown 11.
26、5Non-Scheduled Shutdowns 11.6Oil Sampling 11.7Oil Leveling 11.8Air-to-Fuel-Ratio Measurement and Control 11.9Air-to-Fuel Ratio Verification 11.10Blowby Flow Rate Measurement 11.11NOx Determinations 11.12Data Recording 11.13Initial run (10 min) 11.14Engine Oil Quality Testing (100 h) 11.15Test Termin
27、ation 11.16Determination of Test Results 12Engine Disassembly 12.2Preparation of Parts for Rating of Sticking, Deposits,and Plugging12.3Piston Deposit Rating 12.4Post-Test Camshaft and Lifter Wear Measurements 12.5Viscosity Test 12.6Testing Oil Samples for Wear Metals 12.7Blowby Flow Rate Measuremen
28、ts 12.8Oil Consumption Computation 12.9Photographs of Test Parts 12.10Retention of Representative Test Parts 12.11Severity Adjustments 12.12Determination of Operational Validity 12.13Report 13Report Forms 13.1Precision of Reported Units 13.2Precision and Bias 14Keywords 15The Role of the ASTM Test M
29、onitoring Center (TMC) andthe Calibration ProgramAnnex A1Sequence IIIG Test Parts Replacement Guidelines Annex A2Sequence IIIG Determination Volume of Engine Oilin Pan Annex A3Sequence IIIG Test Fuel Analysis Annex A4Sequence IIIG Test Reporting Annex A5Sequence IIIG Test Air-to-Fuel Ratio Control F
30、low Chart Annex A6Sequence IIIG Test Set Points and Control States Annex A7Sequence IIIG Quality Index Upper and Lower Values Annex A8Sequence IIIG Engine Oil Level Worksheet Annex A9Blowby Flow Rate Determination Annex A10Safety Hazards Annex A11Sequence IIIG Blueprint Listing Annex A12D7320 122Sec
31、tionFluid Condition Module components Annex A13Engine Build Worksheets Annex A14Engine Oil Cooling System Schematic Annex A15Sequence IIIGA Test Procedure Appendix X1Sequence IIIGVIS Test Procedure Appendix X2Sequence IIIGB Test Procedure Appendix X32. Referenced Documents2.1 ASTM Standards:3D86 Tes
32、t Method for Distillation of Petroleum Products atAtmospheric PressureD130 Test Method for Corrosiveness to Copper from Pe-troleum Products by Copper Strip TestD235 Specification for Mineral Spirits (Petroleum Spirits)(Hydrocarbon Dry Cleaning Solvent)D240 Test Method for Heat of Combustion of Liqui
33、dHydrocarbon Fuels by Bomb CalorimeterD323 Test Method for Vapor Pressure of Petroleum Prod-ucts (Reid Method)D381 Test Method for Gum Content in Fuels by Jet Evapo-rationD445 Test Method for Kinematic Viscosity of Transparentand Opaque Liquids (and Calculation of Dynamic Viscos-ity)D525 Test Method
34、 for Oxidation Stability of Gasoline(Induction Period Method)D1319 Test Method for Hydrocarbon Types in LiquidPetroleum Products by Fluorescent Indicator AdsorptionD2699 Test Method for Research Octane Number of Spark-Ignition Engine FuelD2700 Test Method for Motor Octane Number of Spark-Ignition En
35、gine FuelD3231 Test Method for Phosphorus in GasolineD3237 Test Method for Lead in Gasoline by Atomic Ab-sorption SpectroscopyD3244 Practice for Utilization of Test Data to DetermineConformance with SpecificationsD3338 Test Method for Estimation of Net Heat of Combus-tion of Aviation FuelsD3343 Test
36、 Method for Estimation of Hydrogen Content ofAviation FuelsD4052 Test Method for Density, Relative Density, and APIGravity of Liquids by Digital Density MeterD4175 Terminology Relating to Petroleum, PetroleumProducts, and LubricantsD4485 Specification for Performance ofActiveAPI ServiceCategory Engi
37、ne OilsD4684 Test Method for Determination of Yield Stress andApparent Viscosity of Engine Oils at Low TemperatureD4815 Test Method for Determination of MTBE, ETBE,TAME, DIPE, tertiary-Amyl Alcohol and C1to C4Alco-hols in Gasoline by Gas ChromatographyD5185 Test Method for Determination of Additive
38、Ele-ments, Wear Metals, and Contaminants in Used Lubricat-ing Oils and Determination of Selected Elements in BaseOils by Inductively Coupled Plasma Atomic EmissionSpectrometry (ICP-AES)D5191 Test Method for Vapor Pressure of Petroleum Prod-ucts (Mini Method)D5293 Test Method for Apparent Viscosity o
39、f Engine Oilsand Base Stocks Between 5 and 35C Using Cold-Cranking SimulatorD5452 Test Method for Particulate Contamination in Avia-tion Fuels by Laboratory FiltrationD5453 Test Method for Determination of Total Sulfur inLight Hydrocarbons, Spark Ignition Engine Fuel, DieselEngine Fuel, and Engine O
40、il by Ultraviolet FluorescenceD5862 Test Method for Evaluation of Engine Oils inTwo-Stroke Cycle Turbo-Supercharged 6V92TA DieselEngine4D6593 Test Method for Evaluation of Automotive EngineOils for Inhibition of Deposit Formation in a Spark-Ignition Internal Combustion Engine Fueled with Gasolineand
41、 Operated Under Low-Temperature, Light-Duty Con-ditionsD6750 Test Methods for Evaluation of Engine Oils in aHigh-Speed, Single-Cylinder Diesel Engine1K Proce-dure (0.4 % Fuel Sulfur) and 1N Procedure (0.04 % FuelSulfur)D6984 Test Method for Evaluation of Automotive EngineOils in the Sequence IIIF, S
42、park-Ignition EngineD7422 Test Method for Evaluation of Diesel Engine Oils inT-12 Exhaust Gas Recirculation Diesel EngineE29 Practice for Using Significant Digits in Test Data toDetermine Conformance with SpecificationsE191 Specification for Apparatus For Microdeterminationof Carbon and Hydrogen in
43、Organic and Organo-MetallicCompoundsE608/E608M Specification for Mineral-Insulated, Metal-Sheathed Base Metal ThermocouplesE1119 Specification for Industrial Grade Ethylene GlycolIEEE/ASTM SI 10 Standard for Use of the InternationalSystem of Units (SI): The Modern Metric System32.2 Military Specific
44、ation:5MIL-PRF-2104, Lubricating Oil, Internal Combustion En-gine, Tactical Service2.3 SAE Standards:6J183, Engine Oil Performance and Engine Service Classifi-cation (Other Than “Energy-Conserving”)J300, Engine Oil Viscosity Classification *HS-23/00J304, Engine Oil Tests2.4 Other ASTM Documents:3For
45、 referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.4Withdrawn. The last approved version of this historical standard
46、 is referencedon www.astm.org.5Hardcopy available from Document Automation and Production Service,Building 4/D, 700 Robbins Avenue, Philadelphia, PA 19111-5094. Also, can bedownloaded from internet address: http:/assist2.daps.dla.mil/quicksearch/.6Available from Society of Automotive Engineers, 400
47、Commonwealth Dr.,Warrendale, PA 15096-0001. These standards are not available separately. Ordereither SAE Handbook, Vol. 3, or SAE Fuels and Lubricants Standards Manual,HS-23.D7320 123Guidelines for Calibration7The Lubricant Test Monitoring System, Sequence IIIG TestControl Chart Technique for Devel
48、oping and ApplyingSeverity Adjustments (SA)8ASTM Deposit Rating Manual 20 (Formerly CRC Manual20)93. Terminology3.1 Definitions:3.1.1 blowby, nin internal combustion engines, that por-tion of the combustion products and unburned air/fuel mixturethat leaks past piston rings into the engine crankcase
49、duringoperation.3.1.2 BTDC (before top dead center), nused with thedegree symbol to indicate the angular position of the crankshaftrelative to its position at the point of uppermost travel of thepiston in the cylinder. D41753.1.3 calibrate, vto determine the indication or output ofa device (e.g., thermometer, manometer, engine) with respectto that of a standard.3.1.4 clogging, nthe restriction of a flow path due to theaccumulation of material along the flow path boundaries.D41753.1.5 cold-stuck piston ring, nin internal combustionengines, a piston ring that is stuck wh
