ASTM-D2699 2007

$63.38

D2699-07 Standard Test Method for Research Octane Number of Spark-Ignition Engine Fuel

Published By	Publication Date	Number of Pages
ASTM	2007	41

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Categories: 75.160.20 - Liquid fuels, ASTM

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Description

ASTM D2699-07

Historical Standard: Standard Test Method for Research Octane Number of Spark-Ignition Engine Fuel

ASTM D2699

Scope

1.1 This laboratory test method covers the quantitative determination of the knock rating of liquid spark-ignition engine fuel in terms of Research O.N., except that this test method may not be applicable to fuel and fuel components that are primarily oxygenates. The sample fuel is tested using a standardized single cylinder, four-stroke cycle, variable compression ratio, carbureted, CFR engine run in accordance with a defined set of operating conditions. The O.N. scale is defined by the volumetric composition of PRF blends. The sample fuel knock intensity is compared to that of one or more PRF blends. The O.N. of the PRF blend that matches the K.I. of the sample fuel establishes the Research O.N.

1.2 The O.N. scale covers the range from 0 to 120 octane number but this test method has a working range from 40 to 120 Research O.N. Typical commercial fuels produced for spark-ignition engines rate in the 88 to 101 Research O.N. range. Testing of gasoline blend stocks or other process stream materials can produce ratings at various levels throughout the Research O.N. 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-pound 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 specific hazard statements, see Section 8, 13.4.1, 14.5.1, 15.6.1, Annex A1, A2.2.3.1, A2.2.3.3 (6) and (9), A2.3.5, X3.3.7, X4.2.3.1, X4.3.4.1, X4.3.9.3, X4.3.11.4, and X4.5.1.8.

Keywords

guide table; isooctane; knock intensity; n-heptane; research octane number; spark-ignition engine fuel performance; toluene standardization fuel

ICS Code

ICS Number Code 75.160.20 (Liquid fuels)

DOI: 10.1520/D2699-07

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 TABLE 1
7	Sampling Basic Engine and Instrument Settings and Standard Operating Conditions
9	FIG. 2
10	Engine Standardization TABLE 2
11	Test Variable Characteristics TABLE 3 FIG. 3
12	FIG. 4
13	Bracketing—Equilibrium Fuel Level FIG. 5 TABLE 4
14	Bracketing—Dynamic Fuel Level FIG. 6
15	Compression Ratio
16	Calculation of O.N.—Bracketing Procedures TABLE 5
17	Report Precision and Bias FIG. 7
18	Keywords TABLE 6 FIG. 8
19	A1. HAZARDS INFORMATION A1.1 Introduction A1.2 A1.3 A1.4 A2. APPARATUS ASSEMBLY AND SETTING INSTRUCTIONS A2.1
20	A2.2 FIG. A2.1 FIG. A2.2
21	FIG. A2.3 FIG. A2.4
22	A2.3 A2.4 TABLE A2.1 TABLE A2.2
23	A2.5 FIG. A2.5 FIG. A2.6
24	A2.6 A2.7 A3. REFERENCE FUEL BLENDING TABLES A3.1 FIG. A2.7 FIG. A2.8 TABLE A3.1
25	A4. GUIDE TABLES OF CONSTANT KNOCK INTENSITY A4.1 TABLE A3.2 TABLE A3.3
26	TABLE A4.1
28	TABLE A4.2
30	TABLE A4.3
32	TABLE A4.4
33	X1. AUXILIARY EQUIPMENT X1.1 Sample Fuel and Reference Fuel Delivery Components X1.2 Fuel Flow Control Jet TABLE A4.5
34	X2. VOLUMETRIC REFERENCE FUEL BLENDING APPARATUS AND PROCEDURES X2.1 X2.2 X2.3 X2.4 FIG. X2.1 TABLE X2.1
35	FIG. X2.2 TABLE X2.2
36	X2.5 X3. OPERATING TECHNIQUES—ADJUSTMENT OF VARIABLES X3.1 FIG. X2.3
37	X3.2 X3.3 X3.4 X3.5
38	X3.6 X4. MAINTENANCE TECHNIQUES X4.1 X4.2 X4.3
40	X4.4 X4.5

Additional information

Standard Title	D2699-07 Standard Test Method for Research Octane Number of Spark-Ignition Engine Fuel
Published Code	ASTM
Publication Date	2007
Pages Count	41
ICS Codes	75.160.20 - Liquid fuels