PISTON MADE USING ADDITIVE MANUFACTURING TECHNIQUES

摘要

A monobloc piston body for an internal combustion engine is provided. The piston body includes a first piece which includes a pair of skirt portions and a pair of pin bosses and a second piece which includes a crown portion with an upper combustion surface and an at least partially enclosed oil gallery. The first and second pieces are joined together at a joint that is located on a side of the oil gallery opposite of the upper combustion surface. The firs piece is made through casting or forging, and the second piece is made through an additive manufacturing process, such as direct metal laser sintering.

主权项

1. A method of making a piston body for an internal combustion engine, comprising the steps of:
casting or forging a portion of a piston body; and melting a metallic powder through an additive manufacturing process to build the remainder of the piston body onto the cast or forged portion of the piston body.