Причина отмены

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.

Formerly under the jurisdiction of Committee D02 on Petroleum Products and Lubricants, this test method was withdrawn without replacement in October 2009, because the necessary equipment to conduct the procedure is no longer available.

Значение и использование

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, and

SAE Classification J 183.

Область применения

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 Scope1 Referenced Documents2 Terminology3 Summary of Test Method4 Significance and Use5 Apparatus—General Description6 Apparatus—Laboratory and Test Stand Requirements7 Apparatus—Test Engine8 Test Engine8.1 Engine Parts8.2 Special Cleaning Procedures8.3 Periodic Maintenance Inspections8.4 Engine Build-up Procedures8.5 Measurement Instrumentation9 Temperatures9.1 Pressures9.2 Reagents and Materials10 Test Fuel10.1 Test Oil10.2 Coolant10.3 Sealing and Anti-seize Compounds10.4 Hazards11 Laboratory and Test Stand Calibration12 Test Procedure13 Pre-Test Procedure13.1 Engine Operating Procedure13.2 Periodic Measurements and Functions13.3 Diagnostic Data Review13.4 End of Test Procedure13.5 Interpretation of Test Results14 Parts Rating Area—Environment14.1 Piston Rings14.2 Cylinder Liner14.3 Piston Pin Slipper Bushing14.4 Rocker Arm Bushing14.6 Referee Rating14.7 Preparation of Report15 Test Numbering15.1 Operational Data15.2 Photographs15.3 Electronic Transmission of Test Results15.4 Precision and Bias17 Keywords18 Annexes ASTM Test Monitoring CenterAnnex A1 Detailed Specifications and Drawings of ApparatusAnnex A2 Engine Part Number ListingAnnex A3 Test Fuel AnalysisA3.1 Report FormsAnnex A5 Data DictionaryAnnex A6 Appendixes Oil Producer's AffidavitAppendix X1 Engine Build-up FormsAppendix X2