Disp Rated RPM Idle RPM Comp. The following is from a 1938 EMC advertisement. With every down stroke a power stroke, the engine is capable of rapid and smooth acceleration, so very essential in railway service. The cylinders are arranged in two banks forming a 45-deg. Vee and are combined in one unit with the crankcase by welded steel construction, combining light weight and exceptional strength.
Cylinder liners are heat treated cast iron, ground to a mirror finish on the inside.
Cylinder heads are bolted to the liners independently of the studs which hold the assembly in the blocks. Pistons are pearlitic malleable iron with the head recessed at the top to form part of the combustion chamber and help create turbulence during fuel injection, deeply ribbed on the underside for strength and to provide additional cooling. Pistons are oil cooled by an oil spray through a separate pump provided for this purpose. Pressure lubrication is supplied to all important points and the oil is properly conditioned by passing through filters and cooler. Connecting rods are drop forgings of fork and plain rod construction to eliminate cylinder offset and improve bearing conditions.