ASTM D5500-98

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Please contact ASTM International (www.astm.org) for the latest information.
An American National Standard
Designation: D 5500 – 98
Standard Test Method for
Vehicle Evaluation of Unleaded Automotive Spark-Ignition
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Engine Fuel for Intake Valve Deposit Formation
This standard is issued under the fixed designation D5500; 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.
1. Scope D235 Specification for Mineral Spirits (Petroleum Spirits)
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(Hydrocarbon Dry Cleaning Solvents)
1.1 This test method covers a vehicle test procedure for
2.2 ANSI Standard:
evaluation of intake valve deposit formation of unleaded
MC 96.1 American National Standard for Temperature
spark-ignition engine fuels. This test method uses a 1985
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Measurement Thermocouples
model BMW 318i vehicle. Mileage is accumulated following
a specified driving schedule on either public road or test track.
3. Terminology
This test method is adapted from the original BMW of North
3.1 Definitions of Terms Specific to This Standard:
America/Southwest Research Institute Intake Valve Deposit
3.1.1 alternate mileage accumulation (AMA) driving cycle,
test and maintains as much commonality as possible with the
n—a driving schedule that is based on the U.S. Environmental
original test. Chassis dynamometers shall not be used for this
Protection Agency Durability Driving Schedule, which con-
test procedure as the BMW NA/SwRI IVD Test was not
tains various driving patterns for durability testing of emission
intended to be applicable to chassis dynamometers and no
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control systems.
correlation between road operation and chassis dynamometers
3.1.2 base fuel, n—unleaded automotive spark-ignition en-
has been established.
gine fuel that does not contain a deposit control additive, but
NOTE 1—If there is any doubt as to the latest edition of Test Method
may contain antioxidants, corrosion inhibitors, metal deactiva-
D5500, contact ASTM Headquarters.
tors, and oxygenates.
1.2 The values stated in SI or inch-pound units shall be
3.1.3 deposit control additive, n—materialaddedtothebase
regarded separately as standard. The values stated in each
fuel to prevent or remove deposits in the entire engine intake
system may not be exact equivalents; therefore, each system
system.
must be used independently of the other, without combining
3.1.3.1 Discussion—Forthepurposeofthistestmethod,the
values in any way.
performance evaluation of a deposit control additive is limited
1.3 This standard does not purport to address all of the
to the tulip area of intake valves.
safety concerns, if any, associated with its use. It is the
3.1.4 driveability, n—thequalityofavehicle’sperformance
responsibility of the user of this standard to establish appro-
characteristics as perceived by the operator in response to
priate safety and health practices and determine the applica-
changes in throttle position.
bility of regulatory limitations prior to use.Specificstatements
3.1.4.1 Discussion—The performance characteristics may
on hazards are given throughout this test method.
include cold starting and warm-up, acceleration, vapor lock,
and hot starting.
2. Referenced Documents
3.1.5 intake system, n—components of the engine whose
2.1 ASTM Standards:
function it is to prepare and deliver an air/fuel mixture to the
combustion chamber and includes the throttle, intake manifold
hot spot and runners, exhaust gas recirculation (EGR) and
positive crankcase ventilation (PCV) ports, cylinder head
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This test method is under the jurisdiction of ASTM Committee D02 on
runners and ports, intake valves, and fuel injectors.
Petroleum Products and Lubricants and is the direct responsibility of Subcommittee
D02.A on Gasoline and Oxygenated Fuels.
Current edition approved June 10, 1998. Published August 1998. Originally
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published as D5500–94. Last previous edition D5500–97. Annual Book of ASTM Standards, Vol 06.04.
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OriginallyobtainedfromBMWNAnewcardealershipsintheUnitedStatesas Available from American National Standards Institute, 11 W. 42nd St., 13th
a 1985 model year vehicle, the vehicle is currently available through the used Floor, New York, NY 10036.
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vehicle market. Code of Federal Regulations, Title 40, Part 86, Appendix IV.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Please contact ASTM International (www.astm.org) for the latest information.
D5500–98
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3.1.6 intake valve deposit, n—material accumulated on the ity of certain automobiles. Southwest Res
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