Mechanical and marine engineering science ... Specially written as a handbook to the Board of Trade examinations for extra-first-class engineers (1909)
Somerscales, A. N · Glasgow : J. Munro; London, Simpkin, Marshall, Hamilton, Kent · leaf 308
nd compres-sion on the up stroke. It may be noticed, in passing, that thecrank angles for the cut-off on the two strokes are not the same,although the piston positions are both at yg-. We have now to construct a valve diagram for the top valveface working over the top port. We have given the lead ^… … i In figure irz, the angle BCX is made equal to half the angle■of the crank at the ciit-off = 47-| degrees. Also the parallel lines•DY and EZ are drawn, giving the maximurii opening and lead;rihe perpendicular frbm the middle point C and D is dropped, andtHfe travel circledescribed to touch EZ. The…
Naval architecture
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