 |
| Purchase Information |
| Use this form to request purchase information on ASTM online subscriptions. |
|
|
Document ASTM D 2700 is offered by IHS as part of an online subscription. This subscription contains many documents on the same topic.
You may also purchase this document alone from the IHS Standards Store.
ASTM D 2700 Document Information:
Title
Standard Test Method for Motor Octane Number of Spark-Ignition Engine Fuel
ASTM International
Publication Date:
May 1, 2008
Scope:
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.2 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.
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.
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.
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.
2 Research octane number, determined using Test
Method D 2699, is a companion method to provide a similar but
typically higher octane rating under milder operating
conditions.
*A Summary of Changes section appears at the end of this
standard.
Keywords:
- aviation rating
- guide table
- isooctane
- knock intensity
- motor octane number
- n-heptane
- spark-ignition engine fuel performance
- toluene standardization fuel
About IHS
IHS (NYSE: IHS) is a leading global provider of critical technical information, decision-support tools and related services in a number of industries including aerospace and defense, automotive, construction, electronics, and energy. IHS serves customers ranging from large governments and multinational corporations to smaller companies and technical professionals in more than 100 countries. IHS been in business for more than 45 years and employ more than 2,300 people around the world.
