ASTM D6837-08
(Test Method)Standard Test Method for Measurement of Effects of Automotive Engine Oils on Fuel Economy of Passenger Cars and Light-Duty Trucks in Sequence VIB Spark Ignition Engine
Standard Test Method for Measurement of Effects of Automotive Engine Oils on Fuel Economy of Passenger Cars and Light-Duty Trucks in Sequence VIB Spark Ignition Engine
SIGNIFICANCE AND USE
Test Method—The data obtained from the use of this test method provide a comparative index of the fuel-saving capabilities of automotive engine oils under repeatable laboratory conditions. A baseline calibration oil (hereafter referred to as BC oil) has been established for this test to provide a standard against which all other oils can be compared. The BC oil is an SAE 5W-30 grade fully formulated lubricant. There is a direct correlation of Test Method D 6837 (Sequence VIB) Fuel Economy Improvement (FEI) by percent with the fuel economy results obtained from vehicles representative of current production running under the current EPA testing cycles. The test procedure was not designed to give a precise estimate of the difference between two test oils without adequate replication. Rather, it was developed to compare a test oil to BC oil. Companion test methods used to evaluate engine oil performance for specification requirements are discussed in the latest revision of Specification D 4485.
Use—The Sequence VIB test method is useful for engine oil fuel economy specification acceptance. It is used in specifications and classifications of engine lubricating oils, such as the following:
Specification D 4485.
API Publication 1509.
SAE Classification J304.
SAE Classification J1423.
SCOPE
1.1 This test method covers an engine test procedure for the measurement of the effects of automotive engine oils on the fuel economy of passenger cars and light-duty 3856 kg (8500 lb) or less gross vehicle weight trucks. The tests are conducted using a specified 4.6-L spark-ignition engine on a dynamometer test stand. It applies to multiviscosity grade oils used in these applications.
1.2 This test method also provides for the running of an abbreviated length test that is referred to as the VIBSJ. The procedure for VIBSJ is identical to the Sequence VIB with the exception of the items specifically listed in Annex A13. The procedure modifications listed in Annex A13 refer to the corresponding section of the Sequence VIB test method.
1.3 The unit values stated in this test method shall be regarded as the standard. Values given in parentheses are provided for information purposes only. SI units are considered the primary units for this test method. The only exception is where there is no direct SI equivalent such as screw threads, national pipe threads/diameters, tubing size, and so forth.
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 test method is arranged as follows: SubjectSection Introduction Scope1 Referenced Documents2 Terminology3 Summary of Test Method4 Significance and Use5 Apparatus6 General6.1 Test Engine Configuration6.2 Laboratory Ambient Conditions6.3 Engine Speed and Load Control6.4 Dynamometer6.4.1 Dynamometer Load6.4.2 Engine Cooling System6.5 External Oil System6.6 Fuel System6.7 Fuel Flow Measurement6.7.2 Fuel Temperature and Pressure Control to
the Fuel Flowmeter6.7.3 Fuel Temperature and Pressure Control to
Engine Fuel Rail6.7.4 Fuel Supply Pumps6.7.5 Fuel Filtering6.7.6 Engine Intake Air Supply6.8 Intake Air Humidity6.8.1 Intake Air Filtration6.8.2 Intake Air Pressure Relief6.8.3 Temperature Measurement6.9 Thermocouple Location6.9.5 AFR Determination6.10 Exhaust and Exhaust Back Pressure Systems6.11 Exhaust Manifolds6.11.1 Laboratory Exhaust System6.11.2 Exhaust Back Pressure6.11.3 Pressure Measurement and Pressure Sensor
Locations6.12 Engine Oil6.12.2 Fuel to Fuel Flowmeter6.12.3 Fuel to Engine Fuel Rail6.12.4 Exhaust Back Pressure6.12.5 Intake Air6.12.6 Intake Manifold Vacuum/Absolute Pressure6.12.7 Coolant Flow Differential Pressure6.12.8 Crankcase Pressure6.12.9 Engine Hardware and Rela...
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Designation: D6837 – 08
Standard Test Method for
Measurement of Effects of Automotive Engine Oils on Fuel
Economy of Passenger Cars and Light-Duty Trucks in
,
1 2
Sequence VIB Spark Ignition Engine
This standard is issued under the fixed designation D6837; 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.
INTRODUCTION
Thetestmethoddescribedinthisstandardcanbeusedbyanyproperlyequippedlaboratory,without
3
outside assistance. However, the ASTM Test Monitoring Center (TMC) provides reference oils and
assessment of the test results obtained on those oils by the laboratory (seeAnnexA1). By this means,
the laboratory will know whether their use of the test method gives results statistically similar to those
obtainedbyotherlaboratories.Furthermore,variousagenciesrequirethatalaboratoryutilizetheTMC
services in seeking qualification of oils against specifications. For example, the American Petroleum
Institute (API) imposes such a requirement, in connection with several U.S.Army engine lubricating
oil specifications.
Accordingly, this test method is written for use by laboratories, which utilize the TMC services.
Laboratories that choose not to use those services may simply ignore those portions of the test method
that refer to the TMC.
This test method may be modified by means of Information Letters issued by theTMC. In addition,
the TMC may issue supplementary memoranda related to the test method. Users of this test method
shall contact the TMC, Attention: Administrator, to obtain the most recent of these.
1. Scope exception of the items specifically listed in Annex A13. The
procedure modifications listed in Annex A13 refer to the
1.1 This test method covers an engine test procedure for the
corresponding section of the Sequence VIB test method.
measurement of the effects of automotive engine oils on the
1.3 The unit values stated in this test method shall be
fuel economy of passenger cars and light-duty 3856 kg (8500
regarded as the standard. Values given in parentheses are
lb) or less gross vehicle weight trucks. The tests are conducted
providedforinformationpurposesonly.SIunitsareconsidered
using a specified 4.6-L spark-ignition engine on a dynamom-
the primary units for this test method. The only exception is
eter test stand. It applies to multiviscosity grade oils used in
where there is no direct SI equivalent such as screw threads,
these applications.
national pipe threads/diameters, tubing size, and so forth.
1.2 This test method also provides for the running of an
1.4 This standard does not purport to address all of the
abbreviated length test that is referred to as the VIBSJ. The
safety concerns, if any, associated with its use. It is the
procedure for VIBSJ is identical to the Sequence VIB with the
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica-
1
This test method is under the jurisdiction of ASTM Committee D02 on
bility of regulatory limitations prior to use.
Petroleum Products and Lubricants and is the direct responsibility of Subcommittee
1.5 This test method is arranged as follows:
D02.B0.01 on Passenger Car Engine Oils.
Subject Section
Current edition approved May 1, 2008. Published May 2008. Originally
Introduction
approved in 2002. Last previous edition approved in 2006 as D6837–06. DOI:
Scope 1
10.1520/D6837-08.
2
Referenced Documents 2
The multi-cylinder engine test sequences were originally developed in 1956 by
Terminology 3
anASTMCommitteeD02group.Subsequently,theprocedureswerepublishedinan
Summary of Test Method 4
ASTM special technical publication. The Sequence VIB was published as Research
Significance and Use 5
Report D02-1469 dated April 8, 1999.
Apparatus 6
3
ASTMTestMonitoringCenter,6555PennAvenue,Pittsburgh,PA15206-4489.
General 6.1
For other information, refer to Research Report D02-1469, Sequence VIB Test
Test Engine Configuration 6.2
Development. This research report and this test method are supplemented by
Laboratory Ambient Conditions 6.3
Information Letters and Memoranda issued by the ASTM TMC. This edition
Engine Speed and Load Control 6.4
incorporates revisions in all Information Letters through No. 07–1.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1
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D6837 – 08
Subject Section Subject Section
Dynamometer 6.4.1 Fuel Injection System 9.3.17
Dynamometer Load 6.4.2 Intake Air System 9.3.18
Engine Cooling System 6.5 Engine Management System (Spark and Fuel 9.3.19
External Oil System
...
This document is not anASTM standard and is intended only to provide the user of anASTM 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.
An American National Standard
Designation:D6837–06 Designation: D 6837 – 08
Standard Test Method for
Measurement of Effects of Automotive Engine Oils on Fuel
Economy of Passenger Cars and Light-Duty Trucks in
,
1 2
Sequence VIB Spark Ignition Engine
This standard is issued under the fixed designation D 6837; 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.
INTRODUCTION
Thetestmethoddescribedinthisstandardcanbeusedbyanyproperlyequippedlaboratory,without
3
outside assistance. However, the ASTM Test Monitoring Center (TMC) provides reference oils and
assessment of the test results obtained on those oils by the laboratory (seeAnnexA1). By this means,
the laboratory will know whether their use of the test method gives results statistically similar to those
obtainedbyotherlaboratories.Furthermore,variousagenciesrequirethatalaboratoryutilizetheTMC
services in seeking qualification of oils against specifications. For example, the American Petroleum
Institute (API) imposes such a requirement, in connection with several U.S.Army engine lubricating
oil specifications.
Accordingly, this test method is written for use by laboratories, which utilize the TMC services.
Laboratories that choose not to use those services may simply ignore those portions of the test method
that refer to the TMC.
This test method may be modified by means of Information Letters issued by theTMC. In addition,
the TMC may issue supplementary memoranda related to the test method. Users of this test method
shall contact the TMC, Attention: Administrator, to obtain the most recent of these.
1. Scope
1.1 This test method covers an engine test procedure for the measurement of the effects of automotive engine oils on the fuel
economy of passenger cars and light-duty 3856 kg (8500 lb) or less gross vehicle weight trucks. The tests are conducted using a
specified4.6-Lspark-ignitionengineonadynamometerteststand.Itappliestomultiviscositygradeoilsusedintheseapplications.
1.2 This test method also provides for the running of an abbreviated length test that is referred to as the VIBSJ. The procedure
for VIBSJ is identical to the Sequence VIB with the exception of the items specifically listed in Annex A13. The procedure
modifications listed in Annex A13 refer to the corresponding section of the Sequence VIB test method.
1.3 The unit values stated in this test method shall be regarded as the standard. Values given in parentheses are provided for
information purposes only. SI units are considered the primary units for this test method. The only exception is where there is no
direct SI equivalent such as screw threads, national pipe threads/diameters, tubing size, and so forth.
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 test method is arranged as follows:
Subject Section
Introduction
Scope 1
Referenced Documents 2
Terminology 3
1
This test method is under the jurisdiction ofASTM Committee D02 on Petroleum Products and Lubricants and is the direct responsibility of Subcommittee D02.B0.01
on Automotive Lubricants. Passenger Car Engine Oils.
CurrenteditionapprovedMay1,2006.2008.PublishedMay2006.2008.Originallyapprovedin2002.Lastpreviouseditionapprovedin20052006asD6837–05a.6837–06.
2
The multi-cylinder engine test sequences were originally developed in 1956 by an ASTM Committee D02 group. Subsequently, the procedures were published in an
ASTM special technical publication. The Sequence VIB was published as Research Report RR:D02–1469 dated April 8, 1999.
3
ASTMTestMonitoringCenter,6555PennAvenue,Pittsburgh,PA15206-4489.Forotherinformation,refertoResearchReportRR:D02:1469,D02–1469,SequenceVIB
Test Development. This research report and this test method are supplemented by Information Letters and Memoranda issued by theASTM TMC. This edition incorporates
revisions in all Information Letters through No. 05–1. 07–1.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1
---------------------- Page: 1 ----------------------
D6837–08
Subject Section
Summary of Test Method 4
Significance
...
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