ASTM D909-01e1

Standard Test Method for Knock Characteristics of Aviation Gasolines by the Supercharge Method

SIGNIFICANCE AND USE
Supercharge method ratings can provide an indication of the rich-mixture antiknock performance of aviation gasoline in aviation piston engines.
Supercharge method ratings are used by petroleum refiners and marketers and in commerce as a primary specification measurement to insure proper matching of fuel antiknock quality and engine requirement.
Supercharge method ratings may be used by aviation engine and aircraft manufacturers as a specification measurement related to matching of fuels and engines.
SCOPE
1.1 This test method covers the determination of the knock-limited power, under supercharge rich-mixture conditions, of fuels for use in spark-ignition reciprocating aircraft engines, in terms of ASTM supercharge octane or performance number. By operational considerations, this test method is restricted to testing fuels of 85 ASTM supercharge octane number and over.
1.2 The values stated in inch-pound units are to be regarded as the standard. The values in parentheses are for information only.
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. Specific precautionary statements are given in .

General Information

• Status: Historical
• Publication Date: 09-Dec-2001
• ICS: 75.160.20 - Liquid fuels
• Technical Committee: D02 - Petroleum Products, Liquid Fuels, and Lubricants
• Drafting Committee: D02.01 - Combustion Characteristics

Relations

• Replaces: ASTM D909-01 - Standard Test Method for Knock Characteristics of Aviation Gasoline's by the Supercharge Method
• Effective Date: 10-Dec-2001
• Replaced By: ASTM D909-07 - Standard Test Method Supercharge Rating of Spark-Ignition Aviation Gasoline
• Effective Date: 01-Nov-2007
• Referred By: ASTM D7547-23 - Standard Specification for Hydrocarbon Unleaded Aviation Gasoline
• Effective Date: 10-Dec-2001
• Referred By: ASTM D7719-21a - Standard Specification for High Aromatic Content Unleaded Hydrocarbon Aviation Gasoline Test Fuel
• Effective Date: 10-Dec-2001
• Referred By: ASTM D7826-23a - Standard Guide for Evaluation of New Aviation Gasolines and New Aviation Gasoline Additives
• Effective Date: 10-Dec-2001
• Referred By: ASTM D7960-21 - Standard Specification for Unleaded Aviation Gasoline Test Fuel Containing Non-hydrocarbon Components
• Effective Date: 10-Dec-2001
• Referred By: ASTM D910-21 - Standard Specification for Leaded Aviation Gasolines
• Effective Date: 10-Dec-2001
• Referred By: ASTM D8434-21 - Standard Specification for Unleaded Aviation Gasoline Test Fuel Containing Organo-metallic Additive
• Effective Date: 10-Dec-2001
• Referred By: ASTM D6227-18(2023) - Standard Specification for Unleaded Aviation Gasoline Containing a Non-hydrocarbon Component
• Effective Date: 10-Dec-2001

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
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Designation: D 909 – 01 Method 6012.6—Federal Test
Method Standard No. 791b
Designation: 119/96
Standard Test Method for
Knock Characteristics of Aviation Gasolines by the
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Supercharge Method
This standard is issued under the fixed designation D909; 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 (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
e NOTE—Adjunct references were corrected editorially in April 2006.
1. Scope Ignition Engine Fuel
D3237 Test Method for Lead In Gasoline By Atomic
1.1 This test method covers the determination of the knock-
Absorption Spectroscopy
limited power, under supercharge rich-mixture conditions, of
D 3341 Test Method for Lead in Gasoline—Iodine
fuels for use in spark-ignition reciprocating aircraft engines, in
Monochloride Method
terms of ASTM supercharge octane or performance number.
D4057 Practice for Manual Sampling of Petroleum and
By operational considerations, this test method is restricted to
Petroleum Products
testingfuelsof85ASTMsuperchargeoctanenumberandover.
E1 Specification forASTM Liquid-in-GlassThermometers
1.2 The values stated in inch-pound units are to be regarded
2.2 ASTM Adjuncts:
as the standard. The values in parentheses are for information
1
Data Sheet for Supercharge Method (Pads of 50 8 ⁄2 by 11
only.
4
in. sheets)
1.3 This standard does not purport to address all of the
Reference Fuel Framework for Supercharge Method (Pads
safety concerns, if any, associated with its use. It is the
5
1
of 50 8 ⁄2 by 11 in. data sheets)
responsibility of the user of this standard to establish appro-
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Petroleum Measurement Tables
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use. Specific precau-
3. Terminology
tionary statements are given in Annex A7.
3.1 Definitions:
2. Referenced Documents 3.1.1 ASTM supercharge octane number of a fuel below
2
100—the whole number nearest the percentage by volume of
2.1 ASTM Standards:
isooctane(equals100)inablendwithn-heptane(equals0)that
D1368 Test Method for Trace Concentrations of Lead in
3
matches the knock characteristics of the fuel when compared
Primary Reference Fuels
by this test method.
D2268 Test Method forAnalysis of High-Purity n-Heptane
3.1.2 ASTM supercharge rating of a fuel above 100—the
and Isooctane by Capillary Gas Chromatography
amount of tetraethyllead (TEL) in isooctane, expressed in
D2599 Methods of Test for Lead in Gasoline by X-Ray
3
millilitres per U.S. gallon.
Spectrometry
3.2 ASTM supercharge ratings are normally expressed as
D2699 Test Method for Research Octane Number of
octanenumbersbelow100andasperformancenumbersabove
Spark-Ignition Engine Fuel
100. At 100, a rating may be expressed either as 100 octane
D2700 Test Method for Motor Octane Number of Spark-
number or as 100 performance number. Sometimes it is
desirable to convert the ASTM supercharge octane number to
1
This test method is under the jurisdiction of ASTM Committee D02 on performancenumber.ThiscanbedonebyusingTable1.Table
Petroleum Products and Lubricants and is the direct responsibility of Subcommittee
D02.01 on Combustion Characteristics.
Current edition approved Dec. 10, 2001. Published February 2002. Originally
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published as D909–58. Last previous edition D909–00 . Available from ASTM International Headquarters. Order Adjunct No.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or ADJD090901. Original adjunct produced in 1953.
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contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Available from ASTM International Headquarters. Order Adjunct No.
Standards volume information, refer to the standard’s Document Summary page on ADJD090902. Original adjunct produced in 1953.
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the ASTM website. Available from ASTM International Headquarters. Order Adjunct No.
3
Withdrawn. ADJD1250AM. Original adjunct produced in 1952.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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D909–01
TABLE 1 ASTM Conversion of Octane Numbers to Performance Numbers
Octane Octane
0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9
Number Number
Performance Number
70 48.3 48.4 48.4 48.5 48.6 48.7 48.8 48.9 49.0 49.0 70
71 49.1 49.2 49.3 49.4 49.5 49.6 49.6 49.7 49.8 49.9 71
72 50.0 50.1 50.2 50.3 50.4 50.5 50.5 50.6 50.7 50.8 72
73 50.9 51.0 51.1 51.2 51.3 51.4 51.5 51.6 51.7 51.8 73
74 51.9 51.9 52.0 52.1 52.2 52.3 52.4 52.5 52.6 52.7 74
75 52.8 52.9 53.0 53.1 53.2 53.3 53.4 53
...