ASTM D2699-04

Standard Test Method for Research Octane Number of Spark-Ignition Engine Fuel

SCOPE
1.1 This laboratory test method covers the quantitative determination of the knock rating of liquid spark-ignition engine fuel in terms of Research O.N., except that this test method may not be applicable to fuel and fuel components that are primarily oxygenates. The sample fuel is tested using a standardized single cylinder, four-stroke cycle, variable compression ratio, carbureted, CFR engine run in accordance with a defined set of operating conditions. The O.N. scale is defined by the volumetric composition of PRF blends. The sample fuel knock intensity is compared to that of one or more PRF blends. The O.N. of the PRF blend that matches the K.I. of the sample fuel establishes the Research O.N.
1.2 The O.N. scale covers the range from 0 to 120 octane number but this test method has a working range from 40 to 120 Research O.N. Typical commercial fuels produced for spark-ignition engines rate in the 88 to 101 Research O.N. range. Testing of gasoline blend stocks or other process stream materials can produce ratings at various levels throughout the Research O.N. range.
1.3 The values of operating conditions are stated in SI units and are considered standard. The values in parentheses are the historical inch-pound units. The standardized CFR engine measurements continue to be in inch-pound units only because of the extensive and expensive tooling that has been created for this equipment.
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. For specific hazard statements, see Section 8, 13.4.1, 14.5.1, 15.6.1, Annex A1, A2.3.9, A2.4.8, A3.2.7.2(7), A4.2.3.1, A4.2.3.3(6) and (9), A4.3.5, X2.3.7, X3.2.3.1, X3.3.4.1, X3.3.9.3, X3.3.11.4, and X3.5.1.8.

General Information

• Status: Historical
• Publication Date: 30-Apr-2004
• Technical Committee: D02 - Petroleum Products, Liquid Fuels, and Lubricants
• Drafting Committee: D02.01 - Combustion Characteristics

Relations

• Replaces: ASTM D2699-03a - Standard Test Method for Research Octane Number of Spark-Ignition Engine Fuel
• Effective Date: 01-May-2004
• Replaced By: ASTM D2699-04e1 - Standard Test Method for Research Octane Number of Spark-Ignition Engine Fuel
• Effective Date: 01-May-2004
• Referred By: ASTM D1310-14(2021) - Standard Test Method for Flash Point and Fire Point of Liquids by Tag Open-Cup Apparatus
• Effective Date: 01-May-2004
• Referred By: ASTM D2885-21 - Standard Test Method for Determination of Octane Number of Spark-Ignition Engine Fuels by On-Line Direct Comparison Technique
• Effective Date: 01-May-2004
• Referred By: ASTM D6227-18(2023) - Standard Specification for Unleaded Aviation Gasoline Containing a Non-hydrocarbon Component
• Effective Date: 01-May-2004
• Referred By: ASTM D7577-12(2021) - Standard Test Method for Determining the Accelerated Iron Corrosion Rating of Denatured Fuel Ethanol and Ethanol Fuel Blends
• Effective Date: 01-May-2004
• Referred By: ASTM D6593-18e1 - Standard Test Method for Evaluation of Automotive Engine Oils for Inhibition of Deposit Formation in a Spark-Ignition Internal Combustion Engine Fueled with Gasoline and Operated Under Low-Temperature, Light-Duty Conditions
• Effective Date: 01-May-2004
• Referred By: ASTM D6617-21 - Standard Practice for Laboratory Bias Detection Using Single Test Result from Standard Material
• Effective Date: 01-May-2004
• Referred By: ASTM D8340-22 - Standard Practice for Performance-Based Qualification of Spectroscopic Analyzer Systems
• Effective Date: 01-May-2004
• Referred By: ASTM D1094-07(2019) - Standard Test Method for Water Reaction of Aviation Fuels
• Effective Date: 01-May-2004
• Referred By: ASTM D4814-23 - Standard Specification for Automotive Spark-Ignition Engine Fuel
• Effective Date: 01-May-2004
• Referred By: ASTM D8291-23 - Standard Test Method for Evaluation of Performance of Automotive Engine Oils in the Mitigation of Low-Speed, Preignition in the Sequence IX Gasoline Turbocharged Direct-Injection, Spark-Ignition Engine
• Effective Date: 01-May-2004
• Referred By: ASTM D8321-22 - Standard Practice for Development and Validation of Multivariate Analyses for Use in Predicting Properties of Petroleum Products, Liquid Fuels, and Lubricants based on Spectroscopic Measurements
• Effective Date: 01-May-2004
• Referred By: ASTM D7589-16e1 - Standard Test Method for Measurement of Effects of Automotive Engine Oils on Fuel Economy of Passenger Cars and Light-Duty Trucks in Sequence VID Spark Ignition Engine<rangeref></rangeref >
• Effective Date: 01-May-2004
• Referred By: ASTM D8226-21ae1 - Standard Test Method for Measurement of Effects of Automotive Engine Oils on Fuel Economy of Passenger Cars and Light-Duty Trucks in Sequence VIF Spark Ignition Engine<rangeref></rangeref >
• Effective Date: 01-May-2004

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
An American National Standard
Designation: D 2699 – 04
Designation: 237/87
Standard Test Method for
1
Research Octane Number of Spark-Ignition Engine Fuel
This standard is issued under the fixed designation D 2699; 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.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope* statements, see Section 8, 13.4.1, 14.5.1, 15.6.1, Annex A1,
A2.3.9, A2.4.8, A3.2.7.2(7), A4.2.3.1, A4.2.3.3(6) and (9),
1.1 This laboratory test method covers the quantitative
A4.3.5, X2.3.7, X3.2.3.1, X3.3.4.1, X3.3.9.3, X3.3.11.4, and
determination of the knock rating of liquid spark-ignition
X3.5.1.8.
engine fuel in terms of Research O.N., except that this test
method may not be applicable to fuel and fuel components that
2. Referenced Documents
2
are primarily oxygenates. The sample fuel is tested using a
3
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 Determination of Water in Liquid
a defined set of operating conditions. The O.N. scale is defined
4
Petroleum Products by Karl Fischer Reagent
by the volumetric composition of PRF blends. The sample fuel
D 2268 Test Method for Analysis of High-Purity n-Heptane
knock intensity is compared to that of one or more PRF blends.
and Isooctane by Capillary Gas Chromatography
The O.N. of the PRF blend that matches the K.I. of the sample
D 2360 Test Method for Trace Impurities in Monocyclic
fuel establishes the Research O.N.
Aromatic Hydrocarbons by Gas Chromatography
1.2 The O.N. scale covers the range from 0 to 120 octane
D 2700 Test Method for Motor Octane Number of Spark-
number but this test method has a working range from 40 to
Ignition Engine Fuel
120 Research O.N. Typical commercial fuels produced for
D 2885 Test Method for Determination of Octane Number
spark-ignition engines rate in the 88 to 101 Research O.N.
of Spark-Ignition Engine Fuels by On-Line Direct Com-
range. Testing of gasoline blend stocks or other process stream
parison Technique
materials can produce ratings at various levels throughout the
D 3703 Test Method for Peroxide Number of Aviation
Research O.N. range.
Turbine Fuels
1.3 The values of operating conditions are stated in SI units
D 4057 Practice for Manual Sampling of Petroleum and
and are considered standard. The values in parentheses are the
Petroleum Products
historical inch-pound units. The standardized CFR engine
D 4175 Terminology Relating to Petroleum, Petroleum
measurements continue to be in inch-pound units only because
Products, and Lubricants
of the extensive and expensive tooling that has been created for
D 4177 Practice for Automatic Sampling of Petroleum and
this equipment.
Petroleum Products
1.4 This standard does not purport to address all of the
D 4814 Specification for Automotive Spark-Ignition Engine
safety concerns, if any, associated with its use. It is the
Fuel
responsibility of the user of this standard to establish appro-
D 5842 Practice for Sampling and Handling of Fuels for
priate safety and health practices and determine the applica-
Volatility Measurements
bility of regulatory limitations prior to use. For specific hazard
E 1 Specification for Liquid-in-Glass ASTM Thermometers
E 456 Terminology for Relating to Quality and Statistics
1
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.
3
Current edition approved May 1, 2004. Published June 2004. Originally For referenced ASTM standards, visit the ASTM website, www.astm.org, or
approved in 1968. Last previous edition approved in 2003 as D 2699–03a. contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
2
Motor O.N., determined using Test Method D 2700, is a companion method to Standards volume information, refer to the standard’s Document Summary page on
provide a similar but typically lower octane rating under more severe operating the ASTM website.
4
conditions. Withdrawn.
*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.
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D2699–04
E 542 Practice for Calibration of Laboratory Volumetric for sample and reference fuels is determined using the falling
Apparatus level technique that changes carburetor fuel
...