cylinder was not visible. of the rotating parts and because it measures the swirl The second method used to measure rates of air in only a small part of the chamber. It was used, rotation was to obtain with a stop watch the time however, mostly as a chock on fche other tests, and the required for… … Cronh angle, deg. Figure 11.—Effect of shrouded intake-valve arrangement on rate of air swirl. Engine speed, 500 r. p. i 80 160 340 320 400 480 560 640 720 CronH ong/et deg. Figure 12.—Effect of engine speed on rate of air swirl when shroud arrangement A was used.
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