The Effect of Valve Timing Upon the Performance of a Supercharged Engine at Altitude and an Unsupercharged Engine at Sea Level (1932)
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ave considered only the effect of level than for the supercharged engine at altitude. varying independently each valve event. The per- This variance in power is caused by the difference in formance obtained with the optimum valve timing the amount of scavenging obtained for the two condi- must also… … 150 180 BO 90 . 120 150160 0 30 SO 90 120 0 30 Figure 8.—Indicator diagrams showing the eflfect at different speeds of late exhaust opening on the pressure during the exhaust stroke parison of the power developed at different altitudes, supercharged engine at sea level, a quantity of the using the…
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