Motor (LP) Knock Test Method Development 670055

Work has been completed in ASTM Committee D-2, Research Division I, on a knock test method for rating gaseous fuels at a severity level approximating that found in full scale engines. The method for gaseous fuels, Motor (LP) method, is a modification of the Motor methods D 357-65 and D 1948-65 used for liquid fuels. The precision of the Motor (LP) method is comparable to that found for liquid fuels. Additionally, the Motor (LP) method had been used to provide octane numbers for the individual hydrocarbons found in typical LPG fuels and a method has been developed for calculating the octane numbers of LP-gas fuels when their hydrocarbon composition is known.


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