ASTM D3829-17
(Test Method)Standard Test Method for Predicting the Borderline Pumping Temperature of Engine Oil
Standard Test Method for Predicting the Borderline Pumping Temperature of Engine Oil
SIGNIFICANCE AND USE
5.1 Borderline pumping temperature is a measure of the lowest temperature at which an engine oil can be continuously and adequately supplied to the oil pump inlet of an automotive engine.
SCOPE
1.1 This test method covers the prediction of the borderline pumping temperature (BPT) of engine oils through the use of a 16 h cooling cycle over the temperature range from 0 °C to −40 °C. The precision is stated for temperatures from –34 °C to –15 °C.
1.2 Applicability to petroleum products other than engine oils has not been determined.
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.3.1 Exception—This test method uses the SI based unit of milliPascal second (mPa·s) for viscosity, which is equivalent to centipoise (cP).
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.
1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
General Information
Relations
Buy Standard
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: D3829 − 17
Standard Test Method for
Predicting the Borderline Pumping Temperature of Engine
1
Oil
This standard is issued under the fixed designation D3829; 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.
2
1. Scope* 2.2 ISO Standards:
ISO 17025General Requirements for the Competence of
1.1 This test method covers the prediction of the borderline
Testing and Calibration Laboratories
pumping temperature (BPT) of engine oils through the use of
ISO Guide 34General Requirements for the Competence of
a 16h cooling cycle over the temperature range from 0°C to
Reference Material Producers
−40°C.Theprecisionisstatedfortemperaturesfrom–34°Cto
–15°C.
3. Terminology
1.2 Applicability to petroleum products other than engine
3.1 Definitions:
oils has not been determined.
3.1.1 apparent viscosity, n—the determined viscosity ob-
1.3 The values stated in SI units are to be regarded as
tained by use of this test method.
standard. No other units of measurement are included in this
3.1.2 digital contact thermometer (DCT), n—an electronic
standard.
device consisting of a digital display and associated tempera-
1.3.1 Exception—This test method uses the SI based unit of
ture sensing probe.
milliPascalsecond(mPa·s)forviscosity,whichisequivalentto
3.1.2.1 Discussion—This device consists of a temperature
centipoise (cP).
sensor connected to a measuring instrument; this instrument
1.4 This standard does not purport to address all of the
measures the temperature-dependent quantity of the sensor,
safety concerns, if any, associated with its use. It is the
computes the temperature from the measured quantity, and
responsibility of the user of this standard to establish appro-
provides a digital output. This digital output goes to a digital
priate safety and health practices and determine the applica-
displayand/orrecordingdevicethatmaybeinternalorexternal
bility of regulatory limitations prior to use.
to the device. These devices are sometimes referred to as
1.5 This international standard was developed in accor-
“digital thermometers.”
dance with internationally recognized principles on standard-
3.1.2.2 Discussion—PET is an acronym for portable elec-
ization established in the Decision on Principles for the
tronic thermometers, a subset of digital contact thermometers
Development of International Standards, Guides and Recom-
(DCT).
mendations issued by the World Trade Organization Technical
3.1.3 Newtonian oil or fluid, n—anoilorfluidthatatagiven
Barriers to Trade (TBT) Committee.
temperature exhibits a constant viscosity at all shear rates or
shear stresses.
2. Referenced Documents
3.1.4 non-Newtonian oil or fluid, n—an oil or fluid that at a
2.1 ASTM Standards:
given temperature exhibits a viscosity that varies with chang-
E563Practice for Preparation and Use of an Ice-Point Bath
ing shear stress or shear rate.
as a Reference Temperature
E644Test Methods for Testing Industrial Resistance Ther- 3.1.5 shear rate, n—the velocity gradient in fluid flow. For
mometers a Newtonian fluid in a concentric cylinder rotary viscometer in
E1137SpecificationforIndustrialPlatinumResistanceTher- whichtheshearstressismeasuredattheinnercylindersurface
mometers (such as the apparatus being described), and ignoring any end
effects, the shear rate is given as follows:
E2877Guide for Digital Contact Thermometers
2
2ΩR
s
γ˙ 5 (1)
2 2
R 2 R
1 ~ !
s r
This test method is under the jurisdiction of ASTM Committee D02 on
Petroleum Products, Liquid Fuels, and Lubricants and is the direct responsibility of
Subcommittee D02.07 on Flow Properties.
Current edition approved May 1, 2017. Published May 2017. Originally
2
approved in 1979. Last previous edition approved in 2014 as D3829–14. DOI: Available fromAmerican National Standards Institute (ANSI), 25 W. 43rd St.,
10.1520/D3829-17. 4th Floor, New York, NY 10036, http://www.ansi.org.
*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 ----------------------
D3829 − 17
2
4πR 3.2.5 test oil, n—any oil for which the apparent viscosity
s
γ˙ 5 (2)
2 2
t~R 2 R ! and yield stress are to be determined by use of the test method
s r
under description.
where:
3.2.6 yield stress, n—the shear stress required to initiate
γ˙ = shear rate at the surface of the rotor in reciprocal
flow.ForallNewtonianfluidsandsomenon-Newtonianfluids,
−1
seconds, s ,
yield stress is zero. Some engine oils have a yield stress that is
Ω = angular velocity, rad/s,
afunctionoftheirl
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: D3829 − 14 D3829 − 17
Standard Test Method for
Predicting the Borderline Pumping Temperature of Engine
1
Oil
This standard is issued under the fixed designation D3829; 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. Scope*
1.1 This test method covers the prediction of the borderline pumping temperature (BPT) of engine oils through the use of a 16 h
cooling cycle over the temperature range from 0 °C to −40 °C. The precision is stated for temperatures from –34 °C to –15 °C.
1.2 Applicability to petroleum products other than engine oils has not been determined.
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.3.1 Exception—This test method uses the SI based unit of milliPascal second (mPa·s) for viscosity, which is equivalent to
centipoise (cP).
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.
1.5 This international standard was developed in accordance with internationally recognized principles on standardization
established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued
by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
2. Referenced Documents
2.1 ASTM Standards:
E563 Practice for Preparation and Use of an Ice-Point Bath as a Reference Temperature
E644 Test Methods for Testing Industrial Resistance Thermometers
E1137 Specification for Industrial Platinum Resistance Thermometers
E2877 Guide for Digital Contact Thermometers
2
2.2 ISO Standards:
ISO 17025 General Requirements for the Competence of Testing and Calibration Laboratories
1
This test method is under the jurisdiction of ASTM Committee D02 on Petroleum Products, Liquid Fuels, and Lubricants and is the direct responsibility of Subcommittee
D02.07 on Flow Properties.
Current edition approved July 1, 2014May 1, 2017. Published August 2014May 2017. Originally approved in 1979. Last previous edition approved in 20122014 as
D3829 – 12.D3829 – 14. DOI: 10.1520/D3829-14.10.1520/D3829-17.
2
Available from American National Standards Institute (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036, http://www.ansi.org.
*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 ----------------------
D3829 − 17
ISO Guide 34 General Requirements for the Competence of Reference Material Producers
3. Terminology
3.1 Definitions:
3.1.1 apparent viscosity, n—the determined viscosity obtained by use of this test method.
3.1.2 Digital Contact Thermometerdigital contact thermometer (DCT), n—an electronic device consisting of a digital display
and associated temperature sensing probe.
3.1.2.1 Discussion—
This device consists of a temperature sensor connected to a measuring instrument; this instrument measures the temperature-
dependent quantity of the sensor, computes the temperature from the measured quantity, and provides a digital output, or display
of the temperature, or both. This device is output. This digital output goes to a digital display and/or recording device that may
be internal or external to the device. These devices are sometimes referred to as a“digital digital thermometer.thermometers.”
NOTE 1—Portable electronic thermometers (PET) is an acronym sometimes used to refer to a subset of the devices covered by this definition.
3.1.2.2 Discussion—
PET is an acronym for portable electronic thermometers, a subset of digital contact thermometers (DCT).
3.1.3 Newtonian oil or fluid, n—an oil or fluid that at a given temperature exhibits a constant viscosity at all shear rates or shear
stresses.
3.1.4 non-Newtonian oil or fluid, n—an oil or fluid that at a given temperature exhibits a viscosity that varies with changing
shear stress or shear rate.
3.1.5 shear rate, n—the velocity gradient in fluid flow. For a Newtonian fluid in a concentric cylinder rotary viscometer in which
the shear stress is measured at the inner c
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.