Cummins Inc.

Cummins Engine Company, Inc.

Gordon L Starr

John A Worden

Weibo Weng

Guangping Pan

Yong-Ching Chen

A piston cooling system and associated piston are provided which effectively cools and lubricates the upper crown portion of a piston and the connecting rod/piston pin area using a single cooling nozzle. The piston cooling system includes a piston having a cooling gallery, a cooling nozzle positioned to direct cooling oil through a flow path to the entrance of the cooling gallery, and a deflecting surface positioned in the flow path to deflect a portion of the cooling oil into a deflected flow path toward the connecting rod and piston pin area. The deflecting surface may be formed on a baffle plate positioned as the bottom wall of the cooling gallery or may be integrally formed on the piston body.

Internal combustion engine with piston cooling system and piston therefor

An intermetallic bond between a ferrous metal and a non-ferrous metal wherein an intermetallic bond layer that is substantially free of graphic inclusions joins the two. The graphite is effectively eliminated from the bond layer by either removing it from the ferrous metal or by sealing it off from the bond layer. Graphite removal may be accomplished in a variety of ways, including electrochemical cleaning and laser surface treatment. Alternatively, the graphite may be prevented from incursing into the bond region by sealing it off with a layer of metal, such as a chromium plating, that prevents it from penetrating through the bond layer and into the non-ferrous metal.

Growing community of inventors

Columbus, IN, United States of America

Gordon L Starr