1、Designation:D742215aStandard Test Method forEvaluation of Diesel Engine Oils in T-12 Exhaust GasRecirculation Diesel Engine1This standard is issued under the fixed designation D7422;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the
2、 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.1.Scope*1.1 This test method covers an engine test procedure forevaluating diesel engine oils for performance characteristics
3、,including lead corrosion and wear of piston rings and cylinderliners in an engine equipped with exhaust gas recirculation andrunning on ultra-low sulfur diesel fuel.2This test method iscommonly referred to as the Mack T-12.1.1.1 This test method also provides the procedure forrunning an abbreviated
4、 length test,which is commonly referredto as the T-12A.The procedures for the T-12 and T-12A areidentical with the exception of the items specifically listed inAnnex A9.Additionally,the procedure modifications listed inAnnex A9 refer to the corresponding section of the T-12procedure.1.2 The values s
5、tated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.1.2.1 ExceptionWhere there is no direct SI equivalent,such as the units for screw threads,National Pipe Threads/diameters,tubing size,and single source supply equipmentspecifications.1.3 This s
6、tandard 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 practices and determine the applica-bility of regulatory limitations prior to use.See Annex A6 forspecific saf
7、ety precautions.2.Referenced Documents2.1 ASTM Standards:3D86 Test Method for Distillation of Petroleum Products atAtmospheric PressureD93 Test Methods for Flash Point by Pensky-MartensClosed Cup TesterD97 Test Method for Pour Point of Petroleum ProductsD130 Test Method for Corrosiveness to Copper f
8、rom Petro-leum Products by Copper Strip TestD235 Specification for Mineral Spirits(Petroleum Spirits)(Hydrocarbon Dry Cleaning Solvent)D287 Test Method for API Gravity of Crude Petroleum andPetroleum Products(Hydrometer Method)D445 Test Method for Kinematic Viscosity of Transparentand Opaque Liquids
9、(and Calculation of Dynamic Viscos-ity)D482 Test Method for Ash from Petroleum ProductsD524 Test Method for Ramsbottom Carbon Residue ofPetroleum ProductsD613 Test Method for Cetane Number of Diesel Fuel OilD664 Test Method for Acid Number of Petroleum Productsby Potentiometric TitrationD976 Test Me
10、thod for Calculated Cetane Index of DistillateFuelsD1319 Test Method for Hydrocarbon Types in Liquid Petro-leum Products by Fluorescent Indicator AdsorptionD2274 Test Method for Oxidation Stability of Distillate FuelOil(Accelerated Method)D2500 Test Method for Cloud Point of Petroleum ProductsD2622
11、Test Method for Sulfur in Petroleum Products byWavelength Dispersive X-ray Fluorescence SpectrometryD2709 Test Method for Water and Sediment in MiddleDistillate Fuels by Centrifuge1This test method is under the jurisdiction of ASTM Committee D02 onPetroleum Products,Liquid Fuels,and Lubricants and i
12、s the direct responsibility ofSubcommittee D02.B0 on Automotive Lubricants.Current edition approved Oct.1,2015.Published October 2015.Originallyapproved in 2008.Last previous edition approved in 2015 as D7422 15.DOI:10.1520/D7422-15A.2The ASTM Test Monitoring Center will update changes in this test
13、method bymeans of Information Letters.Information letters may be obtained from the ASTMTest Monitoring Center,6555 Penn Avenue,Pittsburgh,PA 15206-4489,Attention:Administrator.This edition incorporates revisions in all Information Letters throughNo.151.3For referenced ASTM standards,visit the ASTM w
14、ebsite,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.*A Summary of Changes section appears at the end of this standardCopyright ASTM International,100 Barr Harbor Dri
15、ve,PO Box C700,West Conshohocken,PA 19428-2959.United States1 D3338 Test Method for Estimation of Net Heat of Combus-tion of Aviation FuelsD4052 Test Method for Density,Relative Density,and APIGravity of Liquids by Digital Density MeterD4175 Terminology Relating to Petroleum,PetroleumProducts,and Lu
16、bricantsD4294 Test Method for Sulfur in Petroleum and PetroleumProducts by Energy Dispersive X-ray Fluorescence Spec-trometryD4485 Specification for Performance of Active API ServiceCategory Engine OilsD4739 Test Method for Base Number Determination byPotentiometric Hydrochloric Acid TitrationD5185 Test Method for Multielement Determination ofUsed and Unused Lubricating Oils and Base Oils byInductively Coupled Plasma Atomic Emission Spectrom-etry(ICP-AES)D5186 Test Method for Determination of th
