ASTM-D2700 2004
$67.71
D2700-04a Standard Test Method for Motor Octane Number of Spark-Ignition Engine Fuel
| Published By | Publication Date | Number of Pages |
| ASTM | 2004 | 64 |
ASTM D2700-04a
Historical Standard: Standard Test Method for Motor Octane Number of Spark-Ignition Engine Fuel
ASTM D2700
Scope
1.1 This laboratory test method covers the quantitative determination of the knock rating of liquid spark-ignition engine fuel in terms of Motor octane number except that this test method may not be applicable to fuel and fuel components that are primarily oxygenates. The sample fuel is tested in a standardized single cylinder, four-stroke cycle, variable compression ratio, carbureted, CFR engine run in accordance with a defined set of operating conditions. The octane number scale is defined by the volumetric composition of primary reference fuel blends. The sample fuel knock intensity is compared to that of one or more primary reference fuel blends. The octane number of the primary reference fuel blend that matches the knock intensity of the sample fuel establishes the Motor octane number.
1.2 The octane number scale covers the range from 0 to 120 octane number, but this test method has a working range from 40 to 120 octane number. Typical commercial fuels produced for automotive spark-ignition engines rate in the 80 to 90 Motor octane number range. Typical commercial fuels produced for aviation spark-ignition engines rate in the 98 to 102 Motor octane number range. Testing of gasoline blend stocks or other process stream materials can produce ratings at various levels throughout the Motor octane number range.
1.3 The values of operating conditions are stated in SI units and are considered standard. The values in parentheses are the historical inch-pounds units. The standardized CFR engine measurements continue to be in inch-pound units only because of the extensive and expensive tooling that has been created for this equipment.
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 Section 8, 13.4.1, 14.5.1, 15.6.1, Annex A1, A2.3.9, A2.4.8, A3.2.7.2(7), A4.2.3.1, A4.2.3.3(6) and (9), A4.3.5, X2.3.7, X3.2.3.1, X3.3.4.1, X3.3.9.3, X3.3.12.4, and X3.5.1.8.
Keywords
aviation rating; guide table; isooctane; knock intensity; motor octane number; n-heptane; spark-ignition engine fuel performance; toluene standardization fuel
ICS Code
ICS Number Code 75.160.20 (Liquid fuels)
DOI: 10.1520/D2700-04A
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 1 | Scope Referenced Documents |
| 2 | Terminology |
| 3 | Summary of Test Method Significance and Use |
| 4 | Interferences Apparatus |
| 5 | FIG. 1 |
| 6 | Reagents and Reference Materials |
| 7 | Sampling Basic Engine and Instrument Settings and Standard Operating Conditions TABLE 1 |
| 8 | TABLE 2 |
| 9 | FIG. 2 |
| 10 | Engine Standardization TABLE 3 TABLE 4 |
| 11 | Test Variable Characteristics FIG. 3 |
| 12 | FIG. 4 FIG. 5 |
| 13 | Bracketing—Equilibrium Fuel Level TABLE 5 |
| 14 | Bracketing—Dynamic Fuel Level: FIG. 6 |
| 15 | Compression Ratio |
| 16 | Calculation of O.N.—Bracketing Procedures Report TABLE 6 |
| 17 | Precision and Bias FIG. 7 TABLE 7 |
| 18 | Keywords FIG. 8 |
| 19 | A1. HAZARDS INFORMATION A1.1 Introduction A1.2 A1.3 A1.4 A2. ENGINE EQUIPMENT DESCRIPTION AND SPECIFICATIONS A2.1 Engine Equipment A2.2 Critical Equipment |
| 20 | TABLE A2.1 |
| 21 | TABLE A2.2 |
| 23 | FIG. A2.1 |
| 24 | A2.3 Equivalent Equipment FIG. A2.2 |
| 25 | A2.4 Non-Critical Equipment and Specifications |
| 26 | A3. INSTRUMENTATION DESCRIPTION AND SPECIFICATIONS A3.1 Instrumentation A3.2 Critical Instrumentation |
| 27 | FIG. A3.1 |
| 29 | FIG. A3.2 |
| 30 | A3.3 Equivalent Instrumentation A3.4 Non-Critical Instrumentation A4. APPARATUS ASSEMBLY AND SETTING INSTRUCTIONS A4.1 |
| 31 | A4.2 FIG. A4.1 |
| 32 | FIG. A4.2 FIG. A4.3 |
| 33 | A4.3 FIG. A4.4 TABLE A4.1 |
| 34 | A4.4 A4.5 TABLE A4.2 |
| 35 | A4.6 A4.7 FIG. A4.5 FIG. A4.6 |
| 36 | A5. REFERENCE FUEL BLENDING TABLES A5.1 FIG. A4.7 FIG. A4.8 |
| 37 | TABLE A5.1 TABLE A5.2 |
| 38 | A6. GUIDE TABLES OF CONSTANT KNOCK INTENSITY A6.1 TABLE A5.3 |
| 39 | TABLE A6.1 |
| 41 | TABLE A6.2 |
| 43 | TABLE A6.3 |
| 45 | TABLE A6.4 |
| 47 | TABLE A6.5 |
| 49 | TABLE A6.6 |
| 51 | TABLE A6.7 |
| 53 | TABLE A6.8 |
| 55 | TABLE A6.9 TABLE A6.10 |
| 56 | X1. VOLUMETRIC REFERENCE FUEL BLENDING APPARATUS AND PROCEDURES X1.1 X1.2 X1.3 X1.4 FIG. X1.1 TABLE X1.1 |
| 57 | X1.5 FIG. X1.2 |
| 58 | X2. OPERATING TECHNIQUES—ADJUSTMENT OF VARIABLES X2.1 TABLE X1.2 FIG. X1.3 |
| 59 | X2.2 X2.3 X2.4 |
| 60 | X2.5 X2.6 X3. MAINTENANCE TECHNIQUES X3.1 X3.2 X3.3 |
| 62 | X3.4 Engine Starting Preparations X3.5 |
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