ASTM D2700-06

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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An American National Standard
Designation: D 2700 – 06
Designation: 236/87
Standard Test Method for
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Motor Octane Number of Spark-Ignition Engine Fuel
This standard is issued under the fixed designation D 2700; 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. For more specific
hazard statements, see Section 8, 13.4.1, 14.5.1, 15.6.1,Annex
1.1 This laboratory test method covers the quantitative
A1, A2.2.3.1, A2.2.3.3(6) and (9), A2.3.5, X3.3.7, X4.2.3.1,
determination of the knock rating of liquid spark-ignition
X4.3.4.1, X4.3.9.3, X4.3.12.4, and X4.5.1.8.
engine fuel in terms of Motor octane number except that this
test method may not be applicable to fuel and fuel components
2. Referenced Documents
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that are primarily oxygenates. The sample fuel is tested in a
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2.1 ASTM Standards:
standardized single cylinder, four-stroke cycle, variable com-
D 1193 Specification for Reagent Water
pression ratio, carbureted, CFR engine run in accordance with
D 1744 Test Method for Water in Liquid Petroleum Prod-
a defined set of operating conditions. The octane number scale
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ucts by Karl Fischer Reagent
is defined by the volumetric composition of primary reference
D 2268 Test Method forAnalysis of High-Purity n-Heptane
fuel blends. The sample fuel knock intensity is compared to
and Isooctane by Capillary Gas Chromatography
that of one or more primary reference fuel blends. The octane
D 2360 Test Method for Trace Impurities in Monocyclic
number of the primary reference fuel blend that matches the
Aromatic Hydrocarbons by Gas Chromatography
knock intensity of the sample fuel establishes the Motor octane
D2699 Test Method for Research Octane Number of
number.
Spark-Ignition Engine Fuel
1.2 The octane number scale covers the range from 0 to 120
D 2885 Test Method for Determination of Octane Number
octane number, but this test method has a working range from
of Spark-Ignition Engine Fuels by On-Line Direct Com-
40 to 120 octane number. Typical commercial fuels produced
parison Technique
for automotive spark-ignition engines rate in the 80 to 90
D 3703 Test Method for Peroxide Number of Aviation
Motor octane number range. Typical commercial fuels pro-
Turbine Fuels
duced for aviation spark-ignition engines rate in the 98 to 102
D 4057 Practice for Manual Sampling of Petroleum and
Motor octane number range. Testing of gasoline blend stocks
Petroleum Products
orotherprocessstreammaterialscanproduceratingsatvarious
D 4175 Terminology Relating to Petroleum, Petroleum
levels throughout the Motor octane number range.
Products, and Lubricants
1.3 The values of operating conditions are stated in SI units
D 4177 Practice for Automatic Sampling of Petroleum and
and are considered standard. The values in parentheses are the
Petroleum Products
historical inch-pounds units. The standardized CFR engine
D 4814 SpecificationforAutomotiveSpark-IgnitionEngine
measurements continue to be in inch-pound units only because
Fuel
oftheextensiveandexpensivetoolingthathasbeencreatedfor
D 5842 Practice for Sampling and Handling of Fuels for
this equipment.
Volatility Measurement
1.4 This standard does not purport to address all of the
E 344 Terminology Relating to Thermometry and Hydrom-
safety concerns, if any, associated with its use. It is the
etry
responsibility of the user of this standard to establish appro-
E 456 Terminology Relating to Quality and Statistics
priate safety and health practices and determine the applica-
E 542 Practice for Calibration of Laboratory Volumetric
Apparatus
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This test method is under the jurisdiction of ASTM Committee D02 on
Petroleum Products and Lubricants and is the direct responsibility of Subcommittee
D02.01 on Combustion Characteristics.
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Current edition approved Jan. 1, 2006. Published February 2006. Originally For referenced ASTM standards, visit the ASTM website, www.astm.org, or
approved in 1968. Last previous edition approved in 2004 as D 2700–04a. contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
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Research octane number, determined using Test Method D 2699, is a compan- Standards volume information, refer to the standard’s Document Summary page on
ion method to provide a similar but typically higher octane rating under milder the ASTM website.
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operating conditions. Withdrawn.
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D2700–06
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2.2 ANSI Standard: or rich mixture condition to a low or l
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