ASTM D6891-2013a 8750 Standard Test Method for Evaluation of Automotive Engine Oils in the Sequence IVA Spark-Ignition Engine《评估IVA序列火花点火发动机中汽车发动机油的标准试验方法》.pdf
《ASTM D6891-2013a 8750 Standard Test Method for Evaluation of Automotive Engine Oils in the Sequence IVA Spark-Ignition Engine《评估IVA序列火花点火发动机中汽车发动机油的标准试验方法》.pdf》由会员分享,可在线阅读,更多相关《ASTM D6891-2013a 8750 Standard Test Method for Evaluation of Automotive Engine Oils in the Sequence IVA Spark-Ignition Engine《评估IVA序列火花点火发动机中汽车发动机油的标准试验方法》.pdf(45页珍藏版)》请在麦多课文档分享上搜索。
1、Designation: D6891 13aStandard Test Method forEvaluation of Automotive Engine Oils in the Sequence IVASpark-Ignition Engine1This standard is issued under the fixed designation D6891; 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.1. Scope*1.1 This test method measures the ability of crankcase oil tocontrol camshaft lobe wear for spark-ignition en
3、gines equippedwith an overhead valve-train and sliding cam followers. Thistest method is designed to simulate extended engine idlingvehicle operation. The Sequence IVA Test Method uses aNissan KA24E engine. The primary result is camshaft lobewear (measured at seven locations around each of the twelv
4、elobes). Secondary results include cam lobe nose wear andmeasurement of iron wear metal concentration in the usedengine oil. Other determinations such as fuel dilution ofcrankcase oil, non-ferrous wear metal concentrations, and totaloil consumption, can be useful in the assessment of the validityof
5、the test results.21.2 The values stated in SI units are to be regarded asstandard. No other units of measurement are included in thisstandard.1.2.1 ExceptionsWhere there is no direct SI equivalentsuch as pipe fittings, tubing, NPT screw threads/diameters, orsingle source equipment specified.1.3 This
6、 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 practices and determine the applica-bility of regulatory limitations prior to use. See Annex A5 forspecif
7、ic safety precautions.2. Referenced Documents2.1 ASTM Standards:3D235 Specification for Mineral Spirits (Petroleum Spirits)(Hydrocarbon Dry Cleaning Solvent)D287 Test Method for API Gravity of Crude Petroleum andPetroleum Products (Hydrometer Method)D323 Test Method for Vapor Pressure of Petroleum P
8、roducts(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 for Oxidation Stability of Gasoline (In-duction Period Method)D3525 Test Method for Gasol
9、ine Diluent in Used GasolineEngine Oils by Gas ChromatographyD4485 Specification for Performance of Active API ServiceCategory Engine OilsD5185 Test Method for Multielement Determination ofUsed and Unused Lubricating Oils and Base Oils byInductively Coupled Plasma Atomic Emission Spectrom-etry (ICP-
10、AES)D5844 Test Method for Evaluation of Automotive EngineOils for Inhibition of Rusting (Sequence IID) (Withdrawn2003)4E230 Specification and Temperature-Electromotive Force(EMF) Tables for Standardized Thermocouples2.2 API Standard:API 1509 Engine Oil Licensing and Certification System51This test m
11、ethod is under the jurisdiction of ASTM Committee D02 onPetroleum Products, Liquid Fuels, and Lubricants and is the direct responsibility ofSubcommittee D02.B0 on Automotive Lubricants.Current edition approved Oct. 1, 2013. Published October 2013. Originallyapproved in 2003. Last previous edition ap
12、proved in 2013 as D6891 13. DOI:10.1520/D6891-13A.2The ASTM Test Monitoring Center will update changes in this test method bymeans of Information Letters. Information letters may be obtained from the ASTMTest Monitoring Center (TMC), 6555 Penn Ave., Pittsburgh, PA 15206-4489,Attention: Administrator
13、. www.astmtmc.cmu.edu. This edition incorporates allInformation Letters through No. 131.3For 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 Summa
14、ry page onthe ASTM website.4The last approved version of this historical standard is referenced onwww.astm.org.5Available from The American Petroleum Institute (API), 1220 L. St., NW,Washington, DC 20005.*A Summary of Changes section appears at the end of this standardCopyright ASTM International, 1
15、00 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States12.3 SAE Standards:SAE J183 Engine Oil Performance and Engine ServiceClassification6SAE J254 Instrumentation and Techniques for Exhaust GasEmissions Measurement62.4 ASME Standard:B46.1 Standard for Surface Texture (Sur
16、face Roughness,Waviness, and Lay)72.5 JASO Standard:M 328-95 Valve-train Wear Test Procedure for EvaluatingAutomobile Gasoline Engine Oils82.6 CEC Standard:CEC-L-38-A-94 Peugeot TU-3M/KDX Valve-train ScuffingWear Test93. Terminology3.1 Definitions:3.1.1 blowby, nthat portion of the combustion produc
17、tsand unburned air/fuel mixture that leaks past piston rings intothe engine crankcase during operation.3.1.2 calibration test stand, na test stand on which thetesting of reference material(s), conducted as specified in thestandard, provided acceptable results. Sub. B Glossary103.1.2.1 DiscussionIn s
18、everal automotive lubricant stan-dard test methods, the ASTM Test Monitoring Center providestesting guidance and determines acceptability.3.1.3 reference oil, nan oil of known performancecharacteristics, used as a basis for comparison.3.1.3.1 DiscussionReference oils are used to calibratetesting fac
19、ilities, to compare the performance of other oils, orto evaluate other materials (such as seals) that interact withoils. D58443.2 Definitions of Terms Specific to This Standard:3.2.1 assessment length, nthe length of surface overwhich measurements are made.3.2.2 break-in, ninitial engine operation t
20、o reach stabili-zation of the engine performance after new parts are installedin the engine.3.2.3 cam lobe wear, nthe sum of the wear determined atthe following locations (nose is zero location): (1)14camdegrees before the nose, (2) 10 before the nose, (3) 4 beforethe nose, (4) at the nose, (5) 4 af
21、ter the nose, (6) 10 after thenose, (7) 14 after the nose.3.2.4 cam nose wear, nthe maximum linear deviation of aworn nose profile from the unworn profile; the nose is the highlift point on the particular cam lobe.3.2.5 flushing, nthe installation of a fresh charge oflubricant and oil filter for the
22、 purpose of running the engine toreduce and eliminate remnants of the previous oil charge.3.2.5.1 DiscussionFlushing may be carried out in aniterated process to ensure a more thorough process of reducingprevious oil remnants.3.2.6 reference line, na deduced, leveled, straight linedrawn on the profil
23、ometer graph, from the front unwornaverage edge of a cam lobe to the rear unworn average edge ofthat cam lobe.3.2.7 valve-train, na mechanical engine subsystem com-prised of the camshaft, the rocker arms, hydraulic lashadjusters, the poppet valves, and valve-springs.3.2.8 wavenesstotal,nthe maximum
24、excursion of the wornsurface as graphically measured normal to the reference line.4. Summary of Test Method4.1 Test Numbering SchemeUse the test numberingscheme shown below:AAAAABBBBBCCCCCAAAAA represents the stand number. BBBBB representsthe number of tests since the last calibration test on that s
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