HOUSING FOR A CYLINDER-OPERATED COMBUSTION-POWERED MACHINE

摘要

A housing for a piston-operated, combustion-powered machine includes an internal portion defining one or more cylinders. The internal portion has a deck upon which are formed threaded columns extending toward an upper connection plane . Partitions extend downward from the deck portion to a lower connection plane , and support bearing blocks for a crankshaft. An external portion is cast around the internal portion so as to provide spaces for cooling water and oil. The external portion is made of a different material from that of the internal portion. T he internal portion integrally supports the cylinder liners, and hence constitutes a uni t therewith.