Figs.29 & 30 A.C.A. Teclmical Memorandum No.371 02 o • CO CQ O M Pi ■a -H (!) O .40 d o •H .35 O •H <H <H CD .25 CO a CD A 80 -40 0 40 • Toluene value $ Effect of toluene value on the mean indicated pressure Fig.39 and on the thermal efficiency(engine with variable … Compression ratio Fig.30 Mean indicated pressure and thermal efficiency at various compression ratios for a fuel which begii to knock at a compression ratio of 511.
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