ASTM D2700 (MON) is a standard test method for determining motor octane number of spark-ignition engine fuels using a standardized MON test engine.
ASTM D2700 (MON) laboratory test method is used to rating the spark-ignition engine fuel in Motor Octane Number. The sample fuel is tested using a standardized MON test engine with a single cylinder, four-stroke cycle, variable compression ratio, carburetor. The MON test engine runs in accordance with a defined set of operating conditions. The motor octane number 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 test method has a working range from 40 to 120 octane number. Typical commercial fuels for automotive spark-ignition engines rate in the 80-90 Motor Octane Number range. Typical commercial fuels for aviation spark-ignition engines rate in the 98- 102 Motor octane number range. Testing of gasoline blends or other process stream materials can produce ratings at various levels throughout the Motor Octane Number.
For more details about ASTM D2700 MON test engine, please visit www.sh-sinpar.com/octane-engines.
For referenced ASTM standards, visit the ASTM website, www.astm.org