Modern locomotive engineering, with questions and answers .. (1913)
Swingle, Calvin Franklin, 1846- [from old catalog] · Chicago, F. J. Drake & co · leaf 233
eric pressure has already been described. Itis from this line that the mean effective pressure of thesteam upon the piston during the stroke is estimatedin all calculations of diagrams taken from locomotivesand other non-condensing engines. Admission at the beginning of the stroke is shownat B, and… … Figure 104 is the line of back pressure or counter pressure, andthe amount of this pressure depends upon the heightof this line above line A. Compression begins at C,and from this point to B is the compression curve. Fig. 104 shows bad valve adjustment, the enginedoing by far the largest portion of…
Locomotives
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