The N.A.C.A. Photographic Apparatus for Studying Fuel Sprays from Oil Engine Injection Valves and Test Results from Several Researches (1928)
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rifugal valve. EFFECT OF GAS DENSITY Figure 9 shows the effect of chamber-gas pressure and density upon the spray penetration after 0.001, 0.002, and 0.003 seconds. The main curves were cross-plotted from the curves shown in the insert, which are for nitrogen gas, and from similar curves obtained… … O 0.51 1.02 1.53 2.04 2.55 3.06 3.57 408 4.60 Absolute density of gos, lb.per cu. ft. 0 100 200 300 400 500 600 700 800 900 Absolute air pressure, lb.per sq. in. Fig. 9.—Effect of gas density on spray penetration Injection valve No. 7; 23° spiral grooves. Cylinder orifice, 0.022 inch diameter.…
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