Experimental and Analytical Determination of the Motion of Hydraulically Operated Valve Stems in Oil Engine Injection Systems (1930)
NASA Technical Reports Server (NTRS) · leaf 10
LVE STEMS IN OIL ENGINE INJECTION SYSTEMS If Vis the rate at which the stem is lifted from the seat,measured parallel to the stem axis, then Vi=V cos a, and from Figure 7, lii—li cos a. Equation (5a) then becomes (5b), (A) ^ ^ W cos2 a The pressure px at rx for any lift h is P-P-J91 \ (/22-/l2).… … 0 Time, seconds lifted 0.00157 inch before there was any ,0030 .0010 -0020 0 actual opening between the seat and stem. Lift between stem and seat, inches The time required for this lift was 0.00028 Figure 8—Pressure variation at seat second. Consequently, the exact values of , V and h for the tip…
NASA Technical Reports Server (NTRS)
Internet Archive · NASA Technical Reports · Public domain (US government work). Free to use for anything.
