Cylinder conversion fabrication of crankcases for two-cycle v-type

Abstract

Longitudinal end portions of an elongated twenty-cylinder engine are disassembled to remove a cylinder location from each end of each cylinder bank for converting a crankcase from a twenty-cylinder, two-cycle, V-type diesel engine to a sixteen-cylinder configuration for use in a diesel electric locomotive. Peripheral air box access windows are provided at each longitudinal end of the crankcase. Portions of the exhaust deck, water jacket side wall and internal cylinder retainer support framing from the disassembled end portions are return welded to the remaining structure after separation of each endplate. Distal edges of longitudinally-extending remaining crankcase framework are machined to provide for receiving a new planar endplate of increased thickness gage at each end. Vibration and thermal stress-relief are applied before external surfaces of the new endplates are machined. The power deck for each cylinder bank is machined uniformly to relocate each camshaft with uniform downward displacement; the crankshaft relationship is predetermined accordingly, and openings for endplate support drive openings maintain their same angular and dimensional relationships to the camshafts and crankshaft.