Pressure Fluctuations in a Common-Rail Fuel Injection System (1931)
NASA Technical Reports Server (NTRS) · leaf 12
s the quantity of fuel discharged, Figure 12, did not vary length of the injection valve tube was increased the .C: 4000 period of vibration of the oil column was increased. The computed periods for the tube lengths are 0.0020 second for the 13-inch tube, 0.0028 second for the 24-inch tube, 0.0087… … Time^ sec. ^.0006 Figure 13.—Effect of tube length on stem lift and oil pressure ^.0004 Orifice diameter.. 0.020 in. Injection pressure. - - - S.riOO lb,/sq. in. Initial pressure ^ - 300 Ib./sq. in. ^^.0002 Valve opening pressure 2,500 Ib./sq. in. 24-inch tube the pressure reached a minimum and 0…
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