ASTM D6079-04e1
(Test Method)Standard Test Method for Evaluating Lubricity of Diesel Fuels by the High-Frequency Reciprocating Rig (HFRR)
Standard Test Method for Evaluating Lubricity of Diesel Fuels by the High-Frequency Reciprocating Rig (HFRR)
SIGNIFICANCE AND USE
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.
The trend of HFRR test results to diesel injection system pump component distress due to wear has been demonstrated in pump rig tests for some fuel/hardware combinations where boundary lubrication is believed to be a factor in the operation of the component.5
The wear scar generated in the HFRR test 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.
The HFRR and Scuffing Load Ball on Cylinder Lubricity Evaluator (SLBOCLE, Test Method D 6078) are two methods for evaluating diesel fuel lubricity. No absolute correlation has been developed between the two test methods.
The HFRR may be used to evaluate the relative effectiveness of diesel fuels for preventing wear under the prescribed test conditions. Correlation of HFRR test results with field performance of diesel fuel injection systems has not yet been determined.
This test method is designed to evaluate boundary lubrication properties. While viscosity effects on lubricity in this test method are not totally eliminated, they are minimized.
SCOPE
1.1 This test method covers the evaluation of the lubricity of diesel fuels using a high-frequency reciprocating rig (HFRR).
1.2 This test method is applicable to middle distillate fuels, such as Grades Low Sulfur No. 1 D, Low Sulfur No. 2 D, No. 1 D, and No. 2 D diesel fuels, in accordance with Specification D 975; and other similar petroleum-based fuels which can be used in diesel enginesNote 1
It is not known that this test method will predict the performance of all additive/fuel combinations. Additional work is underway to further establish this correlation and future revisions of this test method may be necessary once this work is complete.
1.3 The values stated in SI units are to be regarded as the 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 applicable regulatory limitations prior to use. Specific warning statements are given in Section .
General Information
Relations
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
´1
Designation:D6079–04
Standard Test Method for
Evaluating Lubricity of Diesel Fuels by the High-Frequency
1
Reciprocating Rig (HFRR)
This standard is issued under the fixed designation D6079; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1
´ NOTE—Editorial changes were made throughout in April 2005.
1. Scope* Tests Affected by Trace Contamination
D6078 Test Method for Evaluating Lubricity of Diesel
1.1 Thistestmethodcoverstheevaluationofthelubricityof
Fuels by the Scuffing Load Ball-on-Cylinder Lubricity
diesel fuels using a high-frequency reciprocating rig (HFRR).
Evaluator (SLBOCLE)
1.2 This test method is applicable to middle distillate fuels,
E18 Test Methods for Rockwell Hardness of Metallic Ma-
such as Grades Low Sulfur No. 1 D, Low Sulfur No. 2 D, No.
terials
1 D, and No. 2 D diesel fuels, in accordance with Specification
E92 Test Method for Vickers Hardness of Metallic Materi-
D975; and other similar petroleum-based fuels which can be
3
als
used in diesel engines
4
2.2 American Iron and Steel Institute Standard:
NOTE 1—It is not known that this test method will predict the
AISI E-52100 Chromium Alloy Steel
performance of all additive/fuel combinations. Additional work is under-
5
2.3 American National Standards Institute Standard:
way to further establish this correlation and future revisions of this test
ANSI B3.12 Metal Balls
method may be necessary once this work is complete.
1.3 The values stated in SI units are to be regarded as the
3. Terminology
standard.
3.1 Definitions of Terms Specific to This Standard:
1.4 This standard does not purport to address all of the
3.1.1 boundary lubrication, n—a condition in which the
safety concerns, if any, associated with its use. It is the
friction and wear between two surfaces in relative motion are
responsibility of the user of this standard to establish appro-
determined by the properties of the surfaces and the properties
priate safety and health practices and determine the applicable
of the contacting fluid, other than bulk viscosity.
regulatory limitations prior to use.Specificwarningstatements
3.1.1.1 Discussion—Metal to metal contact occurs and the
are given in Section 7.
chemistry of the system is involved. Physically adsorbed or
chemically reacted soft films (usually very thin) support
2. Referenced Documents
contact loads. As a result, some wear is inevitable.
2
2.1 ASTM Standards:
3.1.2 lubricity, n—a qualitative term describing the ability
D975 Specification for Diesel Fuel Oils
of a fluid to affect friction between, and wear to, surfaces in
D4057 Practice for Manual Sampling of Petroleum and
relative motion under load.
Petroleum Products
3.1.2.1 Discussion—In this test method, the lubricity of a
D4177 Practice for Automatic Sampling of Petroleum and
fluid is evaluated by the wear scar, in microns, produced on an
Petroleum Products
oscillating ball from contact with a stationary disc immersed in
D4306 Practice for Aviation Fuel Sample Containers for
the fluid operating under defined and controlled conditions.
4. Summary of Test Method
1
This test method is under the jurisdiction of ASTM Committee D02 on
4.1 A 2-mL test specimen of fuel is placed in the test
Petroleum Products and Lubricants and is the direct responsibility of Subcommittee
D02.E0 on Burner, Diesel, Non-Aviation Gas Turbine, and Marine Fuels.
reservoir of an HFRR and adjusted to either of the standard
Current edition approved Nov. 1, 2004. Published November 2004. Originally
approved in 1999. Last previous edition approved in 2002 as D6079–02.
3
This test method was developed by ISO/TC22/SC7/WG6 and is a part of ISO Withdrawn. The last approved version of this historical standard is referenced
12156. DOI: 10.1520/D6079-04E01. on www.astm.org.
2 4
For referenced ASTM standards, visit the ASTM website, www.astm.org, or Available from American Iron and Steel Institute (AISI), 1140 Connecticut
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Ave., Suite 705, Washington, DC 20036.
5
Standards volume information, refer to the standard’s Document Summary page on Available fromAmerican National Standards Institute (ANSI), 25 W. 43rd St.,
the ASTM website. 4th Floor, New York, NY 10036.
*A Summary of Changes section appears at the end of this standard.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1
---------------------- Page: 1 ----------------------
´1
D6079–04
temperatures (25 or 60°C). The preferred test temperature is
60°C, except where there may be concerns about loss of fuel
beca
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.