1923-01-01

DATA ON THE EFFECTIVE VOLATILITY OF MOTOR-FUELS 1 230009

Since the authors presented a paper on this subject that included the test results of only three fuels, the number of fuels investigated has been increased to 14 and several improvements have been made in the method relating to the manner of the preparation of the equilibrium solution and in the apparatus used for the measurement of vapor-pressures.
In addition to describing these improvements, the present paper includes data on the fuels; a series of empirical curves from which it is possible to determine, aided by the data from the distillation curve, the dew-points of non-aromatic hydrocarbon fuel; a table showing a comparison of the more important properties of the fuels; and definite evidence that the 85-per cent point is the best single measure of the effective volatility of a motor-fuel, from a standpoint of distribution and crankcase-oil dilution.

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