METHOD AND APPARATUS FOR DRAFTLESS WATER JACKET

摘要

The unitary cylinder liner (10) incorporating a water jacket (14) with water passages (12) and air ports (18) is vertically cast as a one piece unit. The water jacket (14) is draftless, allowing water to circulate therethrough more efficiently, increasing cooling capabilities. This one piece casting is made possible by the novel two piece core (30) which eliminates the need for welding of metal bands onto an outer surface of the liner to produce the jacket. The cylinder is constructed by vertical casting using a sectional mold (32).