ASTM D7109-06

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An American National Standard
Designation:D7109–06
Standard Test Method for
Shear Stability of Polymer Containing Fluids Using a
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European Diesel Injector Apparatus at 30 and 90 Cycles
This standard is issued under the fixed designation D 7109; 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 (e) indicates an editorial change since the last revision or reapproval.
1. Scope* bility of regulatory limitations prior to use. Specific warning
statements are given in Section 8.
1.1 This test method covers the evaluation of the shear
stability of polymer-containing fluids. The test method mea-
2. Referenced Documents
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sures the viscosity loss, in mm /s and percent, at 100°C of
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2.1 ASTM Standards:
polymer-containing fluids when evaluated by a diesel injector
D 445 Test Method for Kinematic Viscosity of Transparent
apparatus procedure that uses European diesel injector test
and Opaque Liquids (and Calculation of Dynamic Viscos-
equipment.The viscosity loss reflects polymer degradation due
ity)
to shear at the nozzle. Viscosity loss is evaluated after both 30
D 2603 Test Method for Sonic Shear Stability of Polymer-
and 90 cycles of shearing.
Containing Oils
NOTE 1—Thistestmethodevaluatestheshearstabilityofoilsafterboth
D 3945 Test Methods for Shear Stability of Polymer-
30 and 90 cycles of shearing. For most oils, there is a correlation between
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Containing Fluids Using a Diesel Injector Nozzle
resultsafter30cyclesandresultsafter90cyclesofshearing,butthisisnot
D 5275 Test Method for Fuel Injector Shear Stability Test
universal.
(FISST) for Polymer Containing Fluids
NOTE 2—Test Method D 6278 uses essentially the same procedure with
D 6278 Test Method for Shear Stability of Polymer Con-
30 cycles only instead of both 30 and 90 cycles. The correlation between
results from this test method at 30 cycles and results from Test Method
taining Fluids Using a European Diesel InjectorApparatus
D 6278 has not been established.
D 6299 Practice for Applying Statistical Quality Assurance
NOTE 3—Test Method D 2603 has been used for similar evaluation of
Techniques to Evaluate Analytical Measurement System
shear stability; limitations are as indicated in the significance statement.
Performance
Nodetailedattempthasbeenundertakentocorrelatetheresultsofthistest
2.2 Coordinated European Council (CEC) Standard:
method with those of the sonic shear test method.
CEC L-14-A-93 Evaluation of the Mechanical Shear Sta-
NOTE 4—This test method uses test apparatus as defined in CEC
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bility of Lubricating Oils Containing Polymers
L-14-A-93.This test method differs from CEC-L-14-A-93 in the period of
time required for calibration.
3. Terminology
NOTE 5—Test Method D 5275 also shears oils in a diesel injector
apparatus but may give different results.
3.1 Definitions:
NOTE 6—This test method has different calibration and operational
3.1.1 kinematic viscosity, n—a measure of the resistance to
requirements than Test Method D 3945.
flow of a fluid under gravity.
1.2 The values stated in SI units are to be regarded as the
3.2 Definitions of Terms Specific to This Standard:
standard. The values given in parentheses are for information
3.2.1 calibration pressure, n—the recorded gauge pressure
only.
when calibration fluid RL34 undergoes a viscosity loss of 2.75
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1.3 This standard does not purport to address all of the
to 2.85 mm /s when the recorded gauge pressure is within the
safety concerns, if any, associated with its use. It is the
range of 13.0 to 18.0 MPa (1885 to 2611 psi).
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica-
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For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
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This test method is under the jurisdiction of ASTM Committee D02 on Standards volume information, refer to the standard’s Document Summary page on
Petroleum Products and Lubricants and is the direct responsibility of Subcommittee the ASTM website.
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D02.07 on Flow Properties. Withdrawn.
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Current edition approved July 1, 2006. Published July 2006. Originally approved Available from CEC Secretariat, Madou Plaza, 25th floor, Place Madou 1,
in 2004. Last previous edition approved in 2005 as D 7109–05. B-1210 Brussels, Belgium.
*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.
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D7109–06
3.2.2 percent viscosity loss, n—viscosity loss, as defined in
3.2.3, divided by the pre-sheared viscosity, and
...