ASTM D613-05
(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)
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An American National Standard
Designation: D 613 – 05
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 D613; 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. Scope* D4177 Practice for Automatic Sampling of Petroleum and
Petroleum Products
1.1 This test method determines the rating of diesel fuel oil
E1 Specification forASTM Liquid-in-GlassThermometers
in terms of an arbitrary scale of cetane numbers using a
E456 Terminology Relating to Quality and Statistics
standard single cylinder, four-stroke cycle, variable compres-
E542 Practice for Calibration of Laboratory Volumetric
sion ratio, indirect injected diesel engine.
Apparatus
1.2 The cetane number scale covers the range from zero (0)
E832 Specification for Laboratory Filter Papers
to 100 but typical testing is in the range of 30 to 65 cetane
number.
3. Terminology
1.3 ThevaluesforoperatingconditionsarestatedinSIunits
3.1 Definitions:
and are to be regarded as the standard. The values given in
3.1.1 accepted reference value (ARV), n—a value that
parentheses are the historical inch-pound units for information
serves as an agreed-upon reference for comparison, and which
only. In addition, the engine measurements continue to be in
is derived as: (1) a theoretical or established value, based on
inch-pound units because of the extensive and expensive
scientificprinciples,or(2)anassignedorcertifiedvalue,based
tooling that has been created for these 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. E456
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
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Group or another recognized exchange testing organization.
2.1 ASTM Standards:
3.1.2 cetane number, n—a measure of the ignition perfor-
D975 Specification for Diesel Fuel Oils
manceofadieselfueloilobtainedbycomparingittoreference
D1193 Specification for Reagent Water
fuels in a standardized engine test. D4175
D2500 TestMethodforCloudPointofPetroleumProducts
3.1.2.1 Discussion—In the context of this test method,
D4057 Practice for Manual Sampling of Petroleum and
ignition performance is understood to mean the ignition delay
Petroleum Products
of the fuel as determined in a standard test engine under
D4175 Terminology Relating to Petroleum, Petroleum
controlled conditions of fuel flow rate, injection timing and
Products, and Lubricants
compression ratio.
3.1.3 compression ratio, n—the ratio of the volume of the
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This test method is under the jurisdiction of ASTM Committee D02 on
combustion chamber including the precombustion chamber
PetroleumProductsandLubricantsandisthedirectresponsibilityofSubcommittee
withthepistonatbottomdeadcentertothecomparablevolume
D02.01 on Combustion Characteristics.
with the piston at top dead center.
Current edition approved May 1, 2005. Published May 2005. Originally
approved in 1941. Last previous edition approved in 2003 as D613–03b.
3.1.4 ignition delay, n—that period of time, expressed in
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
degrees of crank angle rotation, between the start of fuel
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
injection and the start of combustion.
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website.
*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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D613–05
3.1.5 injection timing (injection advance), n—that time in 3.2.7.2 Discussion—In the context of this test method, the
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the combustion cycle, measured in degrees of crank angle, at Diesel National Exchange Group of Subcommittee D02.01 is
composed of
...
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