ASTM D8114-18

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Designation: D8114 − 18
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 VIE Spark Ignition
This standard is issued under the fixed designation D8114; 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
Portions of this test method are written for use by laboratories that make use of ASTM Test
3
Monitoring Center (TMC) services (see Annex A1 – Annex A4).
The TMC provides reference oils and engineering and statistical services to laboratories that desire
to produce test results that are statistically similar to those produced by laboratories previously
calibrated by the TMC.
In general, the Test Purchaser decides if a calibrated test stand is to be used. Organizations such as
theAmerican Chemistry Council require that a laboratory utilize theTMC services as part of their test
registration process. In addition, the American Petroleum Institute (API) and the Gear Lubricant
Review Committee of the Lubricant Review Institute (SAE International) require that a laboratory use
the TMC services in seeking qualification of oils against their specifications.
The advantage of using the TMC services to calibrate test stands is that the test laboratory (and
hence the Test Purchaser) has an assurance that the test stand was operating at the proper level of test
severity. It should also be borne in mind that results obtained in a non-calibrated test stand may not
be the same as those obtained in a test stand participating in the ASTM TMC services process.
Laboratories that choose not to use the TMC services may simply disregard these portions.
1. Scope* 1.2 The values stated in SI units are to be regarded as
standard. No other units of measurement are included in this
1.1 This test method covers an engine test procedure for the
standard.
measurement of the effects of automotive engine oils on the
1.2.1 Exceptions—Where there is no direct equivalent such
fuel economy of passenger cars and light-duty trucks with
as the units for screw threads, National Pipe threads/diameters,
gross vehicle weight 3856 kg or less. The tests are conducted
tubing size, and single source supply equipment specifications.
using a specified spark-ignition engine with a displacement of
4
Additionally, Brake Fuel Consumption (BSFC) is measured in
3.6 L (General Motors) on a dynamometer test stand. It
kilograms per kilowatt-hour.
applies to multi-viscosity oils used in these applications.
1.3 This test method is arranged as follows:
Subject Section
1
This test method is under the jurisdiction of ASTM Committee D02 on
Introduction
Petroleum Products, Liquid Fuels, and Lubricants and is the direct responsibility of
Scope 1
Subcommittee D02.B0.01 on Passenger Car Engine Oils.
Referenced Documents 2
Current edition approved April 1, 2018. Published May 2018. Originally
Terminology 3
approved in 2017. Last previous edition approved in 2017 as D8114 – 17. DOI:
Summary of Test Method 4
10.1520/D8114-18.
Significance and Use 5
2
The multi-cylinder engine test sequences were originally developed by an
Apparatus 6
ASTM Committee D02 group. Subsequently, the procedures were published in an
General 6.1
ASTM special technical publication. The Sequence VIB was published as Research
Test Engine Configuration 6.2
Report RR:D02-1469, dated April 8, 1999. Laboratory Ambient Conditions 6.3
3
Until the next revision of this test method, the ASTM Test Monitoring Center Engine Speed and Torque Control 6.4
Dynamometer 6.4.1
will update changes in the test method by means of information letters. Information
Dynamometer Torque 6.4.2
letters may be obtained from the ASTM Test Monitoring Center, 6555 Penn Ave.,
Engine Cooling System 6.5
Pittsburgh, PA 15206-4489. Attention: Administrator. This edition incorporates
External Oil System 6.6
revisions in all information Letters through No. 17-3.
4
Fuel System 6.7
Trademark of General Motors Corporation, 300 Renaissance Center, Detroit,
Fuel Flow Measurement 6.7.2
MI 48265.
*A Summary of Changes section appears at the end of this standard
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D8114 − 18
Fuel Temperature and Pressure Control to the Fuel Flow Meter 6.7.3 Coolant Flow Measurement System 10.2.5
Fuel Temperature and Pressure Control to Engine Fuel Rail 6.7.4 Thermocouple and Temperature Measurement System 10.2.6
Fuel Supply Pumps 6.7.5 Humidity Measurement System 10.2.7
Fuel Filtering 6.7.6 Othe
...