Comparison of Relative Sensitivities of the Knock Limits of Two Fuels to Six Engine Variables

Harvey A. Cook · Louis F. Held · Ernest I. Prichard

1946年1月 · National Advisory Committee for Aeronautics

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A sensitive fuel and a relatively insensitive fuel were knock-tested in a full-scale air-cooled cylinder. Sensitivity was indicated by a different degrees of knock-limited response to changes in engine conditions. Six engine variables were investigated: (1) fuel-air ratio, (2) compression ratio, (3) inlet-air temperature, (4) spark advance, (5) exhaust pressure, and (6) cylinder temperature.