Gas Engine
an engine in which motion is given to the piston by the compression and expansion or explosion of a mixture of a combustible gas and air. The first effective gas engine was brought into public use by M. Lenoir in mixture of a combustible gas and air.
The first effective gas engine was brought into public use by M. Lenoir in 1860. In the Otto engine the cylinder is generally horizontal and single-acting, with a trunk piston, and it takes two revolutions of the crank shaft to complete a cycle of operations. During the first forward stroke gas and air are drawn in, in the proportion proper to form an explosive mixture; during the first backward stroke the mixture is behind the piston. When the next forward stroke is about to begin, the compressed mixture is ignited, and work is done by the heated gases during the second forward stroke. The second back- GAS INLET FLY BALL, GOVERNOR CYLINDER HEAD WIPER OIL CUP GAS, NATURAL Various forms have been contrived. Also a furnace of which the fuel without regard to its illuminating puris gas from burners suitably disposed in poses. ted in this manner.
Steam boilers and metallurgic furnaces the chamber for the purpose required. are sometimes heated