1、Designation: D7320 12D7320 12aStandard 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
2、revision, 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 d
3、oesnot require the assistance of anyone outside that laboratory. However, the ASTM Test MonitoringCenter (TMC)2 provides reference oils and an assessment of the test results obtained on those oils bythe laboratory (see AnnexA1). By these means, the laboratory will know whether their use of the testm
4、ethod gives 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 severalA
5、rmy engine 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 mea
6、ns of Information 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 for evaluating automotive engine oils for certain high-temperatureperformance characteristics, includ
7、ing oil thickening, varnish deposition, oil consumption, as well as engine wear. Such oilsinclude both single viscosity grade and multiviscosity grade oils that are used in both spark-ignition, gasoline-fueled engines, aswell as in diesel engines.1.1.1 Additionally, with nonmandatory supplemental re
8、quirements, a IIIGA Test (Mini Rotary Viscometer and Cold CrankingSimulator measurements), a IIIGVS Test (EOT viscosity increase measurement), or a IIIGB Test (phosphorous retentionmeasurement) can be conducted. These supplemental test procedures are contained in Appendixes Appendix X1, Appendix X2,
9、and Appendix X3, respectively.NOTE 1Companion test methods used to evaluate engine oil performance for specification requirements are discussed in SAE J304.1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.1.2.1 ExceptionWhe
10、re there is no direct SI equivalent such as screw threads, national pipe threads/diameters, and tubing size.1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibilityof the user of this standard to establish appropriate safety
11、and health practices and determine the applicability of regulatorylimitations prior to use. Specific warning statements are provided in 6.14.1.1 and 7.1.1.4 This test method is arranged as follows:SectionIntroductionScope 1Referenced Documents 21 This test method is under the jurisdiction of ASTM Co
12、mmittee D02 on Petroleum Products and Lubricants and is the direct responsibility of Subcommittee D02.B0.01on Passenger Car Engine Oils.Current edition approved April 15, 2012Nov. 1, 2012. Published September 2012March 2013. Originally approved in 2006. Last previous edition approved in 20112012as D
13、732011a.12. DOI: 10.1520/D7320-12.10.1520/D7320-12A.2 Until the next revision of this test method, the ASTM Test Monitoring Center will update changes in the test method by means of information letters. Information lettersmay be obtained from the ASTM Test Monitoring Center, 6555 Penn Avenue, Pittsb
14、urgh, PA 15206-4489. Attention: Administrator. This edition incorporates revisions in allinformation letters through No. 113.121.This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Be
15、causeit may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current versionof the standard as published by ASTM is to be considered the official document.*A Summary of Changes section app
16、ears at the end of this standardCopyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States1SectionTerminology 3Summary of Test Method 4Significance and Use 5Apparatus 6Laboratory 6.1Drawings 6.2Specified Equipment 6.3Test Engine 6.4Engine Parts
17、6.4.1Engine Speed and Load Control 6.5Fluid 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 6.11Induction Air Supply Humidity, Temperature, and Pressure 6.12Temperature Measurement 6.13Th
18、ermocouple 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 6.17Reagents and Materials 7Test Fuel 7.1Engine and Condenser Coolant 7.2Coolant Additive
19、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 Engine Parts (other than the block and heads) 9.3Connecting Rod Cleaning 9.4Engine Block
20、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 Cap Bolts 9.7.4.1Cylinder Head Bolts 9.7.4.2Torques for Miscellaneous Bolts, Studs, and Nu
21、ts 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 Installation 9.13Main Bearings 9.14Crankshaft Installation 9.14.1Main Bearing Cap Installatio
22、n 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 Front Cover 9.21Coolant Inlet Adapter 9.22Oil Dipstick Hole 9.23Oil Pan 9.24Cylinder Head Asse
23、mbly 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 9.32D7320 12a2SectionWater Inlet Adapter 9.33Condenser 9.34Coolant Outlet Adapter 9.35Oil Filter Adapter 9.36Oil Sample Valv
24、e 9.37Ignition System 9.38Throttle Body 9.39Accessory Drive Units 9.40Exhaust Manifolds, Water-Cooled 9.41Engine Flywheel 9.42Pressure Checking of Engine Coolant System 9.43Lifting of Assembled Engines 9.44Mounting the Engine on the Test Stand 9.45External Cooling System Cleaning 9.46Engine Coolant
25、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 Frequency 10.3Reporting of Reference Oil Test Results 10.4Evaluation of Reference Oil
26、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 10.8.2Temperature 10.8.3Pressure 10.8.4Flow 10.8.5Speed 10.8.6Load 10.8.7Measurement Resol
27、ution 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 11.5Non-Scheduled Shutdowns 11.6Oil Sampling 11.7Oil Leveling 11.8Air-to-Fuel-Ratio
28、 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 Termination 11.16Determination of Test Results 12Engine Disassembly 12.2Preparation of
29、 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 Measurements 12.8Oil Consumption Computation 12.9Photographs of Test Parts 12.10Retention
30、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 Monitoring Center (TMC) andthe Calibration ProgramAnnex A1Sequence IIIG Test Part
31、s Replacement Guidelines Annex A2D7320 12a3SectionSequence 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 Flow Chart Annex A6Sequence IIIG Test Set Points and Control Sta
32、tes 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 A12Fluid Condition Module components Annex A13Engine Build Worksheets Annex A1
33、4Engine Oil Cooling System Schematic Annex A15Guidelines For Hardware Subject To First In First OutCriteriaAnnex A16Sequence IIIGA Test Procedure Appendix X1Sequence IIIGVIS Test Procedure Appendix X2Sequence IIIGB Test Procedure Appendix X32. Referenced Documents2.1 ASTM Standards:3D86 Test Method
34、for Distillation of Petroleum Products at Atmospheric PressureD130 Test Method for Corrosiveness to Copper from Petroleum Products by Copper Strip TestD235 Specification for Mineral Spirits (Petroleum Spirits) (Hydrocarbon Dry Cleaning Solvent)D240 Test Method for Heat of Combustion of Liquid Hydroc
35、arbon Fuels by Bomb CalorimeterD323 Test Method for Vapor Pressure of Petroleum Products (Reid Method)D381 Test Method for Gum Content in Fuels by Jet EvaporationD445 Test Method for Kinematic Viscosity of Transparent and Opaque Liquids (and Calculation of Dynamic Viscosity)D525 Test Method for Oxid
36、ation Stability of Gasoline (Induction Period Method)D1319 Test Method for Hydrocarbon Types in Liquid Petroleum 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 Engine Fu
37、elD3231 Test Method for Phosphorus in GasolineD3237 Test Method for Lead in Gasoline by Atomic Absorption SpectroscopyD3244 Practice for Utilization of Test Data to Determine Conformance with SpecificationsD3338 Test Method for Estimation of Net Heat of Combustion of Aviation FuelsD3343 Test Method
38、for Estimation of Hydrogen Content of Aviation FuelsD4052 Test Method for Density, Relative Density, and API Gravity of Liquids by Digital Density MeterD4175 Terminology Relating to Petroleum, Petroleum Products, and LubricantsD4485 Specification for Performance of Active API Service Category Engine
39、 OilsD4684 Test Method for Determination of Yield Stress and Apparent Viscosity of Engine Oils at Low TemperatureD4815 Test Method for Determination of MTBE, ETBE, TAME, DIPE, tertiary-Amyl Alcohol and C1 to C4 Alcohols inGasoline by Gas ChromatographyD5185 Test Method for Determination of Additive
40、Elements, Wear Metals, and Contaminants in Used Lubricating Oils andDetermination of Selected Elements in Base Oils by Inductively Coupled Plasma Atomic Emission Spectrometry (ICP-AES)D5191 Test Method for Vapor Pressure of Petroleum Products (Mini Method)D5293 Test Method for Apparent Viscosity of
41、Engine Oils and Base Stocks Between 5 and 35C Using Cold-CrankingSimulatorD5452 Test Method for Particulate Contamination in Aviation Fuels by Laboratory FiltrationD5453 Test Method for Determination of Total Sulfur in Light Hydrocarbons, Spark Ignition Engine Fuel, Diesel Engine Fuel,and Engine Oil
42、 by Ultraviolet FluorescenceD5862 Test Method for Evaluation of Engine Oils inTwo-Stroke CycleTurbo-Supercharged 6V92TADiesel Engine (Withdrawn2009)4D6593 Test Method for Evaluation of Automotive Engine Oils for Inhibition of Deposit Formation in a Spark-Ignition InternalCombustion Engine Fueled wit
43、h Gasoline and Operated Under Low-Temperature, Light-Duty ConditionsD6750 Test Methods for Evaluation of Engine Oils in a High-Speed, Single-Cylinder Diesel Engine1K Procedure (0.4 % FuelSulfur) and 1N Procedure (0.04 % Fuel Sulfur)D6984 Test Method for Evaluation of Automotive Engine Oils in the Se
44、quence IIIF, Spark-Ignition Engine3 For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the standards Document Summary page on the ASTM website.4 The last approved version
45、 of this historical standard is referenced on www.astm.org.D7320 12a4D7422 Test Method for Evaluation of Diesel Engine Oils in T-12 Exhaust Gas Recirculation Diesel EngineE29 Practice for Using Significant Digits in Test Data to Determine Conformance with SpecificationsE191 Specification forApparatu
46、s For Microdetermination of Carbon and Hydrogen in Organic and Organo-Metallic CompoundsE608/E608M Specification for Mineral-Insulated, Metal-Sheathed Base Metal ThermocouplesE1119 Specification for Industrial Grade Ethylene GlycolIEEE/ASTM SI 10 Standard for Use of the International System of Units
47、 (SI): The Modern Metric System32.2 Military Specification:5MIL-PRF-2104, Lubricating Oil, Internal Combustion Engine, Tactical Service2.3 SAE Standards:6J183, Engine Oil Performance and Engine Service Classification (Other Than “Energy-Conserving”)J300, Engine Oil Viscosity Classification *HS-23/00
48、J304, Engine Oil Tests2.4 Other ASTM Documents:Guidelines for Calibration7The Lubricant Test Monitoring System, Sequence IIIG Test Control Chart Technique for Developing and Applying SeverityAdjustments (SA)8ASTM Deposit Rating Manual 20 (Formerly CRC Manual 20) 93. Terminology3.1 Definitions:3.1.1
49、blowby, nin internal combustion engines, that portion of the combustion products and unburned air/fuel mixture thatleaks past piston rings into the engine crankcase during operation.3.1.2 BTDC (before top dead center), nused with the degree symbol to indicate the angular position of the crankshaft relativeto its position at the point of uppermost travel of the piston in the cylinder. D41753.1.3 calibrate, vto determine the indication or output of a device (e.g., thermometer, manometer, engine) with respect to thatof a standard.3.1.4 clogging, nthe restriction of
