. Locomotive engineering : a practical journal of railway motive power and rolling stock . as thespeed goes up. We did not find it to beso. We find there is a certain loss ofmean effective pressure in changing froma speed of 15 to 25; there is a certain lossproportionally about the same from 25 to35 miles per hour; but when the changegoes from 35 to 45, there is very little lossof mean effective pressure, showing thatthe inertia of the moving parts has a con-siderable effect upon the steam distribu-tion, the amount which the valve moves,and the time when it moves. The writer has frequently bee
. Locomotive engineering : a practical journal of railway motive power and rolling stock . as thespeed goes up. We did not find it to beso. We find there is a certain loss ofmean effective pressure in changing froma speed of 15 to 25; there is a certain lossproportionally about the same from 25 to35 miles per hour; but when the changegoes from 35 to 45, there is very little lossof mean effective pressure, showing thatthe inertia of the moving parts has a con-siderable effect upon the steam distribu-tion, the amount which the valve moves,and the time when it moves. The writer has frequently been puzzledwhen taking diagrams from locomotivesrunning at pretty high speed with shortcut-offs, to see that the diagram for thehigh speeds kept up so well and appro.\i-mated so closely to diagrams taken atconsiderable lower speed in the samenotch. It appears to be highly probable,as Professor Goss said, that stretching ofthe valve motion, due to the inertia of thevalves of the higher speed, produces agreater port opening than that producedat the lower speed. LOCOMOTIVE ENGINEERING. 687.
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroa, bookyear1892
