1、Designation:D284722Standard Practice forTesting Engine Coolants in Car and Light Truck Service1This standard is issued under the fixed designation D2847;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A numb
2、er in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This practice covers an updated procedure for evaluat-ing corrosion protection and performance of an engine coolantin passenger car,light truck
3、 service that closely imitates currentvehicle and engine manufacturers practices.NOTE1Coolant evaluation in vehicle service may require consider-able time and expense;therefore,the product should be pretested in thelaboratory for general acceptability.Typical tests vary from small,closelycontrolled
4、tests,to large tests where close control is not always practical.The most often referenced protocols for laboratory testing are defined inSpecifications D3306,D7714,and D7715.1.2 The units quoted in this practice are to be regarded asstandard.The values given in parentheses are approximateequivalent
5、s for information only.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,health,and environmental practices and deter-mine the applicability of regulatory limita
6、tions prior to use.Specific precautionary statements are given in Section 7.1.4 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards,Guides and R
7、ecom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2D1121 Test Method for Reserve Alkalinity of Engine Cool-ants and AntirustsD1287 Test Method for pH of Engine Coolants andAntirustsD2809 Test Method for Cavitation
8、 Corrosion and Erosion-Corrosion Characteristics of Aluminum Pumps With En-gine CoolantsD3306 Specification for Glycol Base Engine Coolant forAutomobile and Light-Duty ServiceD3321 Test Method for Use of the Refractometer for FieldTest Determination of the Freezing Point of AqueousEngine CoolantsD47
9、25 Terminology for Engine Coolants and Related FluidsD5827 Test Method for Analysis of Engine Coolant forChloride and Other Anions by Ion ChromatographyD6130 Test Method for Determination of Silicon and OtherElements in Engine Coolant by Inductively CoupledPlasma-Atomic Emission SpectroscopyD7714 Sp
10、ecification for Glycerin Base Engine Coolant forAutomobile and Light-Duty ServiceD7715 Specification for Fully-Formulated Glycerin BaseEngine Coolant for Heavy-Duty Engines3.Terminology3.1 DefinitionsRefer to Terminology D4725.4.Summary of Practice4.1 Test coolant shall be a new coolant.The coolant
11、is testedat the recommended concentration in an aqueous solution madewith water that complies with the water recommendationpublished in Specification D3306.A minimum of five testvehicles/enginespercoolantarerequired,tenarerecommended,but this number may be adjusted by agreementbetween customer and s
12、upplier.The test vehicles/engines shallhave been in service less than 3 months,3000 miles,5000 km,or 500 operating hours.The Original Equipment Manufacturer(OEM)may require the replacement of the radiator,heatercore,cooling system hoses,and water pump prior to startingthe test depending on vehicle m
13、ileage or prior coolant in thesystem,or both.Customer and supplier may also choose tofollow requirements published in OEM specifications.Thecooling system components and coolant are inspected accord-ing to a prescribed schedule to provide the basis for coolantperformance evaluation.4.2 A detailed cl
14、eaning and conditioning procedure is es-sential to obtain statistically significant and reproducible re-sults.1This practice is under the jurisdiction of ASTM Committee D15 on EngineCoolants and Related Fluids and is the direct responsibility of SubcommitteeD15.10 on Dynamometer and Road Tests.Curre
15、nt edition approved June 1,2022.Published June 2022.Originallyapproved in 1969.Last previous edition approved in 2015 as D2847 15.DOI:10.1520/D2847-22.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandard
16、s volume information,refer to the standards Document Summary page onthe ASTM website.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Com