【国外标准】 Standard Test Method for Evaluation of Engine Oils in Two-Stroke Cycle Turbo-Supercharged 6V92TA Diesel Engine (Withdrawn 2009)

This test method was developed to evaluate diesel engine oils for protection against ring and liner distress caused by high thermal and mechanical loading.Liner scuffing and ring distress experienced in this test method are measures of the oil's ability to protect against scuffing and scoring under high power and high load conditions typical of service experienced by engines in use today.Piston pin slipper bushing wear, piston skirt tin removal, and liner port plugging are also examined in this test for distress which relates to overall engine life.This test method was developed to correlate with field experience using oils of known good and poor protection against ring and liner distress.The 6V92TA engine oil test is used in specifications and classifications of engine lubricating oils, such as the following:Specification D 4485,Military Specification MIL-L-2104, andSAE Classification J 183.1.1 This test method describes a two-stroke cycle diesel engine test procedure for evaluating engine oils for certain high-temperature performance characteristics, particularly cylinder liner scuffing and piston ring face distress, but also including port plugging, slipper bushing, and piston skirt distress. Such oils include both single viscosity SAE grade and multiviscosity SAE grade oils used in diesel engines. It is commonly known as the 6V92TA test. (See Note 1.)Note 1—Companion test methods used to evaluate other engine oil performance characteristics for specification requirements are discussed in Engine Oil tests—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 Exceptions—Where there is no direct SI equivalent, such as screw threads, National Pipe Threads/diameters, tubing size, or single source supply equipment specifications. Also, many of the figures still show inch-pound units.1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Specific hazard statements are given in Sections 8, 10, 13, and 14.1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.1.4.1 Exceptions—Where there is no direct SI equivalent such as screw threads, National Pipe Threads/diameters, tubing size, or single source supply equipment specifications.1.5 This test method is arranged as follows: Section 1Referenced Documents 2Terminology 3Summary of Test Method 4 5Apparatus—General Description 6Apparatus—Laboratory and Test Stand Requirements 7Apparatus—Test Engine 8Test Engine 8.1Engine Parts 8.2Special Cleaning Procedures 8.3Periodic Maintenance Inspections 8.4Engine Build-up Procedures 8.5Measurement Instrumentation 9Temperatures 9.1Pressures 9.2Reagents and Materials 10Test Fuel 10.1Test Oil 10.2Coolant 10.3Sealing and Anti-seize Compounds 10.4Hazards 11Laboratory and Test Stand Calibration 12Test Procedure 13Pre-Test Procedure 13.1Engine Operating Procedure 13.2Periodic Measurements and Functions 13.3Diagnostic Data Review 13.4End of Test Procedure 13.5Interpretation of Test Results 14Parts Rating Area—Environment 14.1Piston Rings 14.2Cylinder Liner 14.3Piston Pin Slipper Bushing 14.4Rocker Arm Bushing 14.6Referee Rating 14.7Preparation of Report 15Test Numbering 15.1Operational Data 15.2Photographs 15.3Electronic Transmission of Test Results 15.4Precision and Bias 17Keywords 18Annexes ASTM Test Monitoring Center Annex A1Detailed Specifications and Drawings of Apparatus Annex A2Engine Part Number Listing Annex A3Test Fuel Analysis A3.1Report Forms Annex A5Data Dictionary Annex A6Appendixes Oil Producer's Affidavit Appendix X1Engine Build-up Forms Appendix X2