ASTM-D2700 2011

$63.38

D2700-11e1 Standard Test Method for Motor Octane Number of Spark-Ignition Engine Fuel

Published By	Publication Date	Number of Pages
ASTM	2011	56

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Categories: 75.160.20 - Liquid fuels, ASTM

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Description

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, A2.2.3.1, 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, X4.3.12.4, and X4.5.1.8.

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PDF Pages	PDF Title
1	Scope Referenced Documents
2	Terminology
3	Summary of Test Method
4	Significance and Use Interferences Apparatus
5	FIG. 1
6	TABLE 1
7	Reagents and Reference Materials
8	Sampling Basic Engine and Instrument Settings and Standard Operating Conditions TABLE 2
9	TABLE 3
10	FIG. 2
11	Engine Standardization TABLE 4
12	Test Variable Characteristics TABLE 5 FIG. 3
13	FIG. 4
14	Bracketing—Equilibrium Fuel Level FIG. 5
15	TABLE 6 FIG. 6
16	Bracketing—Dynamic Fuel Level:
17	Compression Ratio
18	Bracketing–OA TABLE 7
19	Calculation of O.N.—Bracketing Procedures Report FIG. 7 FIG. 8
20	Precision and Bias TABLE 8
21	Keywords FIG. 9
22	A1. HAZARDS INFORMATION A1.1 Introduction A1.2 A1.3 A1.4 A2. APPARATUS ASSEMBLY AND SETTING INSTRUCTIONS A2.1
23	A2.2 FIG. A2.1
24	FIG. A2.2 FIG. A2.3
25	A2.3 FIG. A2.4 TABLE A2.1
26	A2.4 A2.5 TABLE A2.2
27	FIG. A2.5 FIG. A2.6 FIG. A2.7
28	A2.6 A2.7 A3. REFERENCE FUEL BLENDING TABLES A3.1 FIG. A2.8 TABLE A3.1
29	A4. GUIDE TABLES OF CONSTANT KNOCK INTENSITY A4.1 TABLE A3.2 TABLE A3.3
30	TABLE A4.1
32	TABLE A4.2
34	TABLE A4.3
36	TABLE A4.4
38	TABLE A4.5
40	TABLE A4.6
42	TABLE A4.7
44	TABLE A4.8
46	TABLE A4.9 TABLE A4.10
47	X1. AUXILIARY EQUIPMENT X1.1 Sample Fuel and Reference Fuel Delivery Components X1.2 Fuel Flow Control Jet X1.3 Cooling System Requirements X2. VOLUMETRIC REFERENCE FUEL BLENDING APPARATUS AND PROCEDURES X2.1 X2.2 X2.3
48	X2.4 X2.5 FIG. X2.1
49	TABLE X2.1 FIG. X2.2
50	X3. OPERATING TECHNIQUES—ADJUSTMENT OF VARIABLES X3.1 TABLE X2.2 FIG. X2.3
51	X3.2 X3.3 X3.4
52	X3.5 X3.6 X4. MAINTENANCE TECHNIQUES X4.1 X4.2 X4.3
54	X4.4 Engine Starting Preparations X4.5

Additional information

Standard Title	D2700-11e1 Standard Test Method for Motor Octane Number of Spark-Ignition Engine Fuel
Published Code	ASTM
Publication Date	2011
Pages Count	56
ICS Codes	75.160.20 - Liquid fuels

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