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ASTM D7170-06

Historical Revision

Standard Test Method for Determination of Derived Cetane Number (DCN) of Diesel Fuel Oils—Fixed Range Injection Period, Constant Volume Combustion Chamber Method

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1.1 This test method covers the quantitative determination of the ignition characteristics of conventional diesel fuel oils, diesel fuel oils containing cetane number improver additives, and is applicable to products typical of Specification D 975, Grades No. 1-D and 2-D regular and low-sulfur diesel fuel oils, European standard EN 590, and Canadian standards CAN/CGSB-3.517-2000 and CAN/CGSB 3.6-2000. The test method may also be applied to the quantitative determination of the ignition characteristics of blends of fuel oils containing biodiesel material, and diesel fuel oil blending components.

1.2 This test method measures the ignition delay and utilizes a constant volume combustion chamber with direct fuel injection into heated, compressed air. An equation converts an ignition delay determination to a derived cetane number (DCN).

1.3 This test method covers the ignition delay range from 2.90 to 4.35 ms (60.0 to 40.0 DCN). The combustion analyzer can measure shorter and longer ignition delays but precision may be affected.

1.4 The values stated in SI units are to be regarded as the standard. The values given 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.


SDO ASTM: ASTM International
Document Number D7170
Publication Date Jan. 1, 2006
Language en - English
Page Count 12
Revision Level 06
Supercedes
Committee D02.01
Publish Date Document Id Type View
Oct. 1, 2016 D7170-16 Revision
May 1, 2014 D7170-14 Revision
Nov. 1, 2012 D7170-12A Revision
June 15, 2012 D7170-12 Revision
Feb. 15, 2011 D7170-11 Revision
July 1, 2010 D7170-10 Revision
April 15, 2009 D7170-09 Revision
Aug. 1, 2008 D7170-08 Revision
July 1, 2006 D7170-06A Revision
Jan. 1, 2006 D7170-06 Revision