. The Street railway journal . ds, havecaused our adoption of tandem double-acting cylinders for rail-way work. It is sometimes argued that cylinders so arranged are inaccessi-ble. If, as is the practice of the Westinghouse Company, amplespace is arranged between the cylinders, and if the inlet and ex-haust valves are not located in the heads, but in the cylinder bodyand entirely above the floor level, such a gas engine is as accessibleas a tandem-compound Corliss engine or as a Corliss enginedriving an air compressor. The speed of a gas engine must be adapted to the kind of gen-erator to whic
. The Street railway journal . ds, havecaused our adoption of tandem double-acting cylinders for rail-way work. It is sometimes argued that cylinders so arranged are inaccessi-ble. If, as is the practice of the Westinghouse Company, amplespace is arranged between the cylinders, and if the inlet and ex-haust valves are not located in the heads, but in the cylinder bodyand entirely above the floor level, such a gas engine is as accessibleas a tandem-compound Corliss engine or as a Corliss enginedriving an air compressor. The speed of a gas engine must be adapted to the kind of gen-erator to which it is to be directly connected. In a general way,its speed will usually somewhat exceed that of a Corliss engineof the same cylinder dimensions. In my experience, the speed oflarge steam engines is limited by the inertia and consequent wearand tear of the valve gear rather than by the inertia of the re-ciprocating parts themselves, which is absorbed by the compres-sion. Inasmuch as in a 4-cycle gas engine the valve gear only. GAS ENGINE EOR UNION TRACTION COMPANY, INDEPENDENCE, KAN. inder, single-acting, 4-cycle engine an explosion takes place oncein every two revolutions. In order, therefore, to get the samerotative effect as with a double-acting steam cylinder, it is neces-sary to work four single-acting cylinders on the shaft or twodouble-acting gas cylinders tandem on one crank pin. With thisarrangement four explosions are obtained in two revolutions, oran explosion every. 180 degs. of crank angle. In case of a mis-fire or premature ignition due to bad gas, the crank can onlymove one-half a turn before another explosion takes place. In asingle-cylinder, single-acting engine the crank must move twowhole turns before the next explosion, while with two single-acting cylinders opposed to each other or one double-acting cyl-inder, the crank may be required to move one and one-half turnsbefore the next explosion. The relative evil effects of a prema-ture or misfire are, therefo
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884
