Diesel engines for land and marine work . d regulating arrangement. The small engine of construction is of the two-cycle single acting type,and it is built with four or six working cylinders—a smallflywheel being provided. The cylinders are supported bypillars instead of the usual A frame, and easily removablecovers enclose the crank chamber. The valves (scavenge,fuel and starting) are arranged in the cylinder head, butin each cylinder two scavenge valves are fitted, one on eachside of the fuel valve, as shown in Fig. 91, which illustratesa typical engine of this design. By this
Diesel engines for land and marine work . d regulating arrangement. The small engine of construction is of the two-cycle single acting type,and it is built with four or six working cylinders—a smallflywheel being provided. The cylinders are supported bypillars instead of the usual A frame, and easily removablecovers enclose the crank chamber. The valves (scavenge,fuel and starting) are arranged in the cylinder head, butin each cylinder two scavenge valves are fitted, one on eachside of the fuel valve, as shown in Fig. 91, which illustratesa typical engine of this design. By this means relativelysmall valves are permissible to allow the entrance of thelarge amount of scavenging air, and the valve bodies arelighter and morp easily operated, but in the latest designsscavenge valves are omitted altogether, and ports areemployed at the bottom of the cylinder. In the engine illustrated in Fig. 91 there is one doubleacting scavenge pump in line with the working cylinders, 206 CONSTRUCTION OF DIESEL MARINE ENGINE 207. with a piston diameter of nearly double that of the scavenge air is delivered into the long cyhndricalreceiver seen at the back of the engine, and thence to thevarious cylinders through the valves. The burnt gaseous 208 DIESEL ENGINES FOR LAND AND MARINE WORK
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