ASTM-D6890 2004
$44.96
D6890-04 Standard Test Method for Determination of Ignition Delay and Derived Cetane Number (DCN) of Diesel Fuel Oils by Combustion in a Constant Volume Chamber
| Published By | Publication Date | Number of Pages |
| ASTM | 2004 | 15 |
ASTM D6890-04
Historical Standard: Standard Test Method for Determination of Ignition Delay and Derived Cetane Number (DCN) of Diesel Fuel Oils by Combustion in a Constant Volume Chamber
ASTM D6890
Scope
1.1 This automated laboratory test method covers the quantitative determination of the ignition characteristics of conventional diesel fuel oil, oil-sands based fuels, blends of fuel containing biodiesel material, diesel fuel oils containing cetane number improver additives, and is applicable to products typical of ASTM 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 and 3.6-2000. The test method may also be applied to the quantitative determination of the ignition characteristics of diesel fuel 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 3.6 to 5.0 milliseconds (55.3 to 40.5 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.
1.5 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.
Keywords
cetane number; derived cetane number; diesel performance; ignition characteristic; ignition delay
ICS Code
ICS Number Code 13.220.40 (Ignitability and burning behaviour of materials and products)
DOI: 10.1520/D6890-04
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 1 | Scope Referenced Documents |
| 2 | Terminology Summary of Test Method Significance and Use |
| 3 | Interferences Apparatus Reagents and Materials Sampling and Test Specimen Preparation |
| 4 | Basic Apparatus Settings and Standard Operating Conditions FIG. 1 |
| 5 | Calibration and Quality Control Testing |
| 6 | Procedure Report |
| 7 | Precision and Bias Keywords TABLE 1 TABLE 2 TABLE 3 |
| 8 | A1. HAZARDS INFORMATION A1.1 Introduction A1.2 A1.3 A1.4 A1.5 A1.6 A1.7 A2. COMBUSTION ANALYZER EQUIPMENT DESCRIPTION AND SPECIFICATIONS A2.1 A2.2 A2.3 |
| 9 | FIG. A2.1 FIG. A2.2 |
| 10 | A2.4 A2.5 A2.6 Circulating Coolant System A2.7 Optional Equipment |
| 11 | A3. COMBUSTION ANALYZER OPERATING FUNCTIONS A3.1 Starting and Warm-up Procedure A3.2 Fuel Injection System Procedure |
| 12 | A3.3 Pressure Sensor Assembly Cleaning Procedure A3.4 Combustion Chamber Sealing Integrity Check Procedure A3.5 Combustion Analyzer Shut Down Procedure |
| 13 | A4. SUPPLEMENTAL PROCEDURE INFORMATION A4.1 Test Sequence FIG. A4.1 |
| 14 | X1. EXAMPLE OF TEST OUTPUT FIG. X1.1 |
