Valve Gears
Valve Gears
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In our eReader you can find the full English version of the book. Read Valve Gears Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book Valve Gears
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86 2. 46 3. 00 2. 49 . 96 a 01 oo Actual "steam speed through 2690 4030 6290 10680 port, V, .
Width of port opening 36" . 46" 48" 20" 20. %. 24 6 Area of port opening, a' 2. 16 2. 76 2. 88 1. 20 2320 3600 6550 22 200 port, Vs.
stroke need be considered since the speed during the return stroke will never be greater.
Maximum port opening, for 0. 6 cut-off, occurs at the points marked 6 and 6' corresponding to crank positions 48| past the dead centers.
Now suppose this process is repeated for cut-...offs at 40%, 30% and 20 % of the stroke, using the same maximum port opening of 3 sq. In. In each case. The results are given in Table 3 and plotted in Fig. 43.
On the curve for 40 % cut-off the point marked 4 indicates the time at which maximum port opening occurs and it will be noticed that the ordinates, i. E. , the steam speeds, are less than indicated by the curve for 60% cut-off which has been reproduced here from Fig. 42. This is because the valve gives the same maximum open- ing in both cases but in the latter the period of inflow of steam is PORT OPENINGS AND PASSAGE AREAS 45 during a time when the piston is moving slower.
What to read after Valve Gears?
You can find similar books in the "Read Also" column, or choose other free books by Charles Horace Fessenden to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
86 2. 46 3. 00 2. 49 . 96 a 01 oo Actual "steam speed through 2690 4030 6290 10680 port, V, .
Width of port opening 36" . 46" 48" 20" 20. %. 24 6 Area of port opening, a' 2. 16 2. 76 2. 88 1. 20 2320 3600 6550 22 200 port, Vs.
stroke need be considered since the speed during the return stroke will never be greater.
Maximum port opening, for 0. 6 cut-off, occurs at the points marked 6 and 6' corresponding to crank positions 48| past the dead centers.
Now suppose this process is repeated for cut-...offs at 40%, 30% and 20 % of the stroke, using the same maximum port opening of 3 sq. In. In each case. The results are given in Table 3 and plotted in Fig. 43.
On the curve for 40 % cut-off the point marked 4 indicates the time at which maximum port opening occurs and it will be noticed that the ordinates, i. E. , the steam speeds, are less than indicated by the curve for 60% cut-off which has been reproduced here from Fig. 42. This is because the valve gives the same maximum open- ing in both cases but in the latter the period of inflow of steam is PORT OPENINGS AND PASSAGE AREAS 45 during a time when the piston is moving slower.
What to read after Valve Gears?
You can find similar books in the "Read Also" column, or choose other free books by Charles Horace Fessenden to read onlineMoreLess
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