- October 4, 2018
New Standard Helps Determine Fuel Suitability for Engines
A new ASTM International standard will help determine how suitable a
gaseous fuel is for use in internal combustion engines in both mobile
and stationary applications. ASTM’s committee on gaseous fuels (D03) published the new standard, which will soon be published as D8221.
The new standard will be used to determine the calculated methane
number (MNc) of gaseous fuels to be used in internal combustion
engines. The MNc is a rating index of a gaseous fuel’s resistance to
autoignition, also called knock, when compared to a reference methane/hydrogen
mixture. Fuels covered by the standard can be from traditional
geological or renewable resources and include pipeline gas, compressed
natural gas, liquefied natural gas, liquefied petroleum gas, and
renewable natural gas.
“The MNc will be useful to
entities producing, transporting, storing, dispensing, measuring, and
using commercially available natural gas products intended for internal
combustion engines and engine manufacturers to describe acceptable fuel
quality for their engines,” says ASTM International member Robin J.
Bremmer, director of advanced alternative fuels at Cummins Inc.
notes that the standard may also be cited by ASTM and other standards
and regulation organizations when there is a need to define gaseous fuel
quality and its possible MNc limitation values.CONTINUE READING ON www.astm.org