INTERNAL-COMBUSTION; INTERNAL-COMBUSTION ENGINE a.
ely heavy oil, as petroleum or kerosene. In all of these the gas is mixed with a definite amount of air, the charge is composed in the cylinder and is then exploded either by a flame of gas (flame ignition -- now little used), by a hot tube (tube ignition) or the like, by an electric spark (electric ignition, the usual…
IRON n.
ng a large, and often the chief, ingredient of meteorites. It invariably contains a small amount of nickel and cobalt. Cf. Meteorite. -- Pig iron, the form in which cast iron is made at the blast furnace, being run into molds, called pigs. -- Reduced iron. See under Reduced. -- Specular iron. See Hematite. -- Too m…