ASTM D613-03a
(Test Method)Standard Test Method for Cetane Number of Diesel Fuel Oil
Standard Test Method for Cetane Number of Diesel Fuel Oil
SCOPE
1.1 This test method determines the rating of diesel fuel oil in terms of an arbitrary scale of cetane numbers using a standard single cylinder, four-stroke cycle, variable compression ratio, indirect injected diesel engine.
1.2 The cetane number scale covers the range from zero (0) to 100 but typical testing is in the range of 30 to 65 cetane number.
1.3 The values for operating conditions are stated in SI units and are considered standard. The values in parentheses are the historical inch-pounds units. In addition, the engine measurements continue to be in inch-pounds units because of the extensive and expensive tooling that has been created for these units.
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 more specific hazard statements, see Annex A1.
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Standards Content (Sample)
NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
An American National Standard
Designation: D 613 – 03a
Designation: 41/2000
Standard Test Method for
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Cetane Number of Diesel Fuel Oil
This standard is issued under the fixed designation D 613; 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 * D 4177 Practice for Automatic Sampling of Petroleum and
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Petroleum Products
1.1 This test method determines the rating of diesel fuel oil
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E 1 Specification for ASTM Thermometers
in terms of an arbitrary scale of cetane numbers using a
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E 456 Terminology Relating to Quality and Statistics
standard single cylinder, four-stroke cycle, variable compres-
E 542 Practice for Calibration of Laboratory Volumetric
sion ratio, indirect injected diesel engine.
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Apparatus
1.2 The cetane number scale covers the range from zero (0)
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E 832 Specification for Laboratory Filter Papers
to 100 but typical testing is in the range of 30 to 65 cetane
number.
3. Terminology
1.3 The values for operating conditions are stated in SI units
3.1 Definitions:
and are considered standard. The values in parentheses are the
3.1.1 accepted reference value (ARV), n—a value that
historical inch-pounds units. In addition, the engine measure-
serves as an agreed-upon reference for comparison, and which
ments continue to be in inch-pounds units because of the
is derived as: (1) a theoretical or established value, based on
extensive and expensive tooling that has been created for these
scientific principles, or (2) an assigned or certified value, based
units.
on experimental work of some national or international orga-
1.4 This standard does not purport to address all of the
nization, or (3) a consensus or certified value, based on
safety concerns, if any, associated with its use. It is the
collaborative experimental work under the auspices of a
responsibility of the user of this standard to establish appro-
scientific or engineering group. E 456
priate safety and health practices and determine the applica-
3.1.1.1 Discussion—In the context of this test method,
bility of regulatory limitations prior to use. For more specific
accepted reference value is understood to apply to the cetane
warning statements, see Annex A1.
number of specific reference materials determined empirically
2. Referenced Documents under reproducibility conditions by the National Exchange
Group or another recognized exchange testing organization.
2.1 ASTM Standards:
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3.1.2 cetane number, n—a measure of the ignition perfor-
D 975 Specification for Diesel Fuel Oils
3 mance of a diesel fuel oil obtained by comparing it to reference
D 1193 Specification for Reagent Water
fuels in a standardized engine test. D 4175
D 2500 Test Method for Cloud Point of Petroleum Prod-
2 3.1.2.1 Discussion—In the context of this test method,
ucts
ignition performance is understood to mean the ignition delay
D 4057 Practice for Manual Sampling of Petroleum and
4 of the fuel as determined in a standard test engine under
Petroleum Products
controlled conditions of fuel flow rate, injection timing and
D 4175 Terminology Relating to Petroleum, Petroleum
4 compression ratio.
Products, and Lubricants
3.1.3 compression ratio, n—the ratio of the volume of the
combustion chamber including the precombustion chamber
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This test method is under the jurisdiction of ASTM Committee D02 on
with the piston at bottom dead center to the comparable volume
Petroleum Products and Lubricants and is the direct responsibility of Subcommittee
with the piston at top dead center.
D02.01 on Combustion Characteristics.
Current edition approved May 10, 2003. Published May 2003. Originally
approved in 1941. Last previous edition approved in 2001 as D 613–03.
2 5
Annual Book of ASTM Standards, Vol 05.01. Annual Book of ASTM Standards, Vol 14.03.
3 6
Annual Book of ASTM Standards, Vol 11.01. Annual Book of ASTM Standards, Vol 14.02.
4 7
Annual Book of ASTM Standards, Vol 05.02. Annual Book of ASTM Standards, Vol 14.04.
*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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NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
D 613 – 03a
3.1.4 ignition delay, n—that period of time, expressed in 3.2.7.2 Discussion—In the context of this test method, the
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degrees of crank angle rotation, between the start of fuel Diesel National Exchange Group of Subcommittee D02.01 is
injection
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