Ripper, William, 1853-1937 · London, New York [etc.] : Longmans, Green and co. · leaf 512
HG = lap + lead, and HK = lap. Bisect HK at L, andHG at M. Erect perpendiculars from L and M to meet at N. Then the angleCHN is the angle of advance. HN is the quarter-travel of the valve. Thesteam circle of the Zeuner valve diagram may be drawn with centre N and radiusHN. 28. The lap of a valve is… … Problem 4.—To show the effect of the length of the connecting rod on the cut-off, assuming equal lead at Loth ends of the stroke. Assuming the valve diagram to he drawn in the usual manner then, neglecting the length of the connecting rod, HD (Fig. 488) represents the crank position EPwhen cut-off…
Steam-engines
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