ASTM D6898-03(2016)
(Test Method)Standard Test Method for Evaluating Diesel Fuel Lubricity by an Injection Pump Rig (Withdrawn 2021)
Standard Test Method for Evaluating Diesel Fuel Lubricity by an Injection Pump Rig (Withdrawn 2021)
SIGNIFICANCE AND USE
5.1 Diesel fuel injection equipment has some reliance on lubricating properties of the diesel fuel. Shortened life of engine components, such as diesel fuel injection pumps and injectors, has sometimes been ascribed to lack of lubricity in a diesel fuel.
5.2 Pump Lubricity Value (PLV) test results generally rank fuel effects on diesel injection system pump component distress due to wear in the same order as Bosch, Lucas, Stanadyne, and Cummins in-house rig tests.5 In these fuel/hardware tests, boundary lubrication is believed to be a factor in the operation of the component.
5.3 The PLV is sensitive to contamination of the fluids and test materials and the temperature of the test. Lubricity evaluations are also sensitive to trace contaminants acquired during test fuel sampling and storage.
5.4 Test Methods D6078 and D6079 are two methods for evaluating diesel fuel lubricity. No absolute correlation has been developed between these two test methods, or between either of these methods and the PLV.
5.5 The PLV may be used to evaluate the relative effectiveness of a fluid for preventing wear under the prescribed test conditions.
5.6 This test method is designed to evaluate boundary lubrication properties. While viscosity effects on lubricity are not totally eliminated, they are minimized.
5.7 This test can indicate whether or not an additive will improve the lubricity of a poor lubricity fuel.
SCOPE
1.1 This test method covers evaluating the lubricity of diesel fuels using a pump rig test and Stanadyne Model DB4427-4782 pumps.
Note 1: Other pumps may be used if a correlation between pump performance factors and fuel lubricity has been developed.
1.2 This test method is applicable to any fuel used in diesel engines, including those which may contain a lubricity enhancing additive.
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.4 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 warning statements are given in Section 7.
WITHDRAWN RATIONALE
This test method covered evaluating the lubricity of diesel fuels using a pump rig test and Stanadyne Model DB4427-4782 pumps.
Formerly under the jurisdiction of Committee D02 on Petroleum Products, Liquid Fuels, and Lubricants, this test method was withdrawn in November 2021. This standard is being withdrawn without replacement. This item was recently balloted for Reapproval on Ballot D02 (21-02), Item 9. The ballot received one negative vote regarding the Precision section being inadequate. The standard states in Section 13.1.1 – “The reproducibility of this test method will be determined within the next five years.” This was the original statement from 2003 – many more than five years. This voter did offer some alternative options as found in Form & Style for ASTM Standards, Section A21.5.5. No motion was made to find this negative not persuasive thus finding it persuasive and, therefore, we feel it prudent to ballot for withdrawal. Several other comments were also received on this ballot item indicating that this standard should be balloted for withdrawal, and subsequently archived as a historical standard for various reasons as shown below:
– Section 5.4 states: “No absolute correlation has been determined between the two test methods” (referring to PLV as determined by D6898 and HFRR)
– Very little interest in, or use of the standard (not currently listed as an approved Lubricity method in D975 Section 5.1.13) – not even enough for ASTM PTP reporting
– Lack of any meaningful updates to the standard since 2003
– Reference to cancelled SAE specification J967 (replaced by ISO 4113) in Section 2.2 an...
General Information
Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: D6898 − 03 (Reapproved 2016)
Standard Test Method for
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Evaluating Diesel Fuel Lubricity by an Injection Pump Rig
This standard is issued under the fixed designation D6898; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
INTRODUCTION
All diesel fuel injection equipment relies, to some extent, on diesel fuel as a lubricant. Shortened
lifeofdieselfuelinjectionpumpsandinjectorsfromwearcausedbyexcessivefrictionhassometimes
been ascribed to lack of lubricity in the fuel. This test assesses the lubricity of a fuel by operation of
the fuel in a typical fuel injection system comprised of injection pump, high pressure pipes, and
injectors on a pump test rig bench. The test models an actual commercial application of such
equipment. The pump performance is evaluated on a test bench meeting SAE J1668 requirements.
1. Scope D362SpecificationforIndustrialGradeToluene(Withdrawn
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1989)
1.1 Thistestmethodcoversevaluatingthelubricityofdiesel
D4057Practice for Manual Sampling of Petroleum and
fuels using a pump rig test and Stanadyne Model DB4427-
Petroleum Products
4782 pumps.
D4177Practice for Automatic Sampling of Petroleum and
NOTE 1—Other pumps may be used if a correlation between pump
Petroleum Products
performance factors and fuel lubricity has been developed.
D4306Practice for Aviation Fuel Sample Containers for
1.2 This test method is applicable to any fuel used in diesel
Tests Affected by Trace Contamination
engines,includingthosewhichmaycontainalubricityenhanc-
D6078TestMethodforEvaluatingLubricityofDieselFuels
ing additive.
by the Scuffing Load Ball-on-Cylinder Lubricity Evalua-
tor (SLBOCLE)
1.3 The values stated in SI units are to be regarded as
D6079TestMethodforEvaluatingLubricityofDieselFuels
standard. No other units of measurement are included in this
by the High-Frequency Reciprocating Rig (HFRR)
standard.
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2.2 SAE Standards:
1.4 This standard does not purport to address all of the
SAE J967Calibration Fluid for Diesel Injection Equipment
safety concerns, if any, associated with its use. It is the
SAE J968/1Diesel Injection Pump Testing—Part 1: Cali-
responsibility of the user of this standard to establish appro-
brating Nozzles and Holder Assemblies
priate safety and health practices and determine the applica-
SAE J1418Fuel Injection Pumps—High Pressure Pipes
bility of regulatory limitations prior to use. Specific warning
(Tubing) for Testing
statements are given in Section 7.
SAE J1668Diesel Engines—Fuel Injection Pump Testing
2. Referenced Documents
3. Terminology
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2.1 ASTM Standards:
3.1 Definitions of Terms Specific to This Standard:
D329Specification for Acetone
3.1.1 boundary lubrication, n—a condition in which the
friction and wear between two surfaces in relative motion are
determined by the properties of the surfaces and the properties
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This test method is under the jurisdiction of ASTM Committee D02 on
of the contacting fluid, other than bulk viscosity.
Petroleum Products, Liquid Fuels, and Lubricants and is the direct responsibility of
3.1.1.1 Discussion—Metal to metal contact occurs and the
Subcommittee D02.E0 on Burner, Diesel, Non-Aviation Gas Turbine, and Marine
chemistry of the system is involved. Physically adsorbed or
Fuels.
Current edition approved Nov. 1, 2016. Published November 2016. Originally
approved in 2003. Last previous edition approved in 2010 as D6898–03 (2010).
DOI: 10.1520/D6898-03R16.
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For referenced ASTM standards, visit the ASTM website, www.astm.org, or The last approved version of this historical standard is referenced on
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM www.astm.org.
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Standards volume information, refer to the standard’s Document Summary page on AvailablefromSAEInternational(SAE),400CommonwealthDr.,Warrendale,
the ASTM website. PA 15096, http://www.sae.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
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D6898 − 03 (2016)
Trademark of STANADYNE Diesel Systems
FIG. 1 Schematic of Stanadyne Model DB4427-4782 Pump
chemically reacted soft films (usually very thin) support 5. Significance and Use
contact loads. Consequently, some wear is inevitable.
5.1 Diesel fuel injection equipment has some reliance on
3.1.2 lubricity, n—a qualitative term describing the ability
lubricating properties of the diesel fuel. Shortened life of
of a fluid to affect friction between, and wear to, surfaces in
engine components, such as diesel fuel injection pumps and
relative motion under load.
injectors, has so
...
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