. Locomotive engineering : a practical journal of railway motive power and rolling stock . e Corlissvalve gear to a locomotive appear, to havebeen solved sucessfully in France. Weproduce from Engineering an illustra-tion of a locomotive with Corliss valvegear, designed by M. Ernest Polonceau,of the Iaiis. Orleans Railway, and nowrunning on that road. Indicator diagrams alvi in not < hilled by pa isage ol thiexhaust steam through them. The tempeiature of the latter is about 230 degreewhile that ol the team chest is 356 de ;rei lain. Thus, in ordinary engineswith a single valve there is a cer
. Locomotive engineering : a practical journal of railway motive power and rolling stock . e Corlissvalve gear to a locomotive appear, to havebeen solved sucessfully in France. Weproduce from Engineering an illustra-tion of a locomotive with Corliss valvegear, designed by M. Ernest Polonceau,of the Iaiis. Orleans Railway, and nowrunning on that road. Indicator diagrams alvi in not < hilled by pa isage ol thiexhaust steam through them. The tempeiature of the latter is about 230 degreewhile that ol the team chest is 356 de ;rei lain. Thus, in ordinary engineswith a single valve there is a certainamount of conden ation, which does notOCCU in the engine with four Ct\ alves. 2. There is not the same loss in pressure during admission, because the learn enters through port ol aboutdouble the usual 3. The expansive force of the steam inthe cylindei 1 betti t utilized, because theclearance space is smaller. The period ofcompression is shorter and of exp longer—all conditions telling in fa\ the new valve gear. 4. When reversing the valve, the |.li \ eli iped to stop the engine i. FRENCH LOCOMOTIVE WITH CORLISS VALVE GEAR. show that the engine, when running at 51miles an hour, gives steam distributionthat is not unlike the ordinary Corliss en-gine. In this locomotive, both the induc-tion and exhaust valves have positive mo-tion, and, as will be seen from the en-graving, there is not much complicationof parts. The engine seems to have thecapacity of holding together, which is dif-ferent from any Corliss locomotives everbuilt before, for she ran miles with-out accident, and, on examination, thevalve gears were all found to be in goodcondition and required no work to bedone upon them. This seemed strange tothe men in charge, for it appears that theslide valves on French locomotives haveto be faced after running about The claim is made that the Cor-liss engine saves 6 per cent, of fuel over aslide valve engine of the same type doingsimilar work. We should
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Keywords: ., bookcentury1800, bookdecade1890, bookidlocomotiveen, bookyear1892
