Patent · US Active

Lightweight construciton of a diesel piston

US10082101B2 · kind B2 · utility

1Cited by

7References

9Claims

0Family size

Assignee

Federal-Mogul Nurnberg GmbH · DE

Inventors

Marcus Freidhager · Nuremberg, DE
Paul Heinz · Forchheim, DE
Roland Bohm · Altenberge, DE

Key dates

Filing date	Jul 28, 2014
Grant date	Sep 25, 2018
Priority date	—
Expiry date	Jul 28, 2034

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF02F3/22
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

The invention relates to a piston (10) for an internal combustion engine, comprising a piston crown (22), a cylindrical piston head (11), which adjoins the piston crown (22), and an at least partially hollow piston skirt (40), which is formed on the piston head (11) on the side facing away from the piston crown (22) and which has two opposite skirt wall segments (50) and two opposite connecting walls (60) that connect the skirt wall segments (50), wherein the connecting walls (60) each have a pin bore (61), wherein the piston head (11) has an annular cooling channel (18), which has at least one inlet opening (28) and at least one outlet opening (30), and the two skirt wall segments (50) widen toward the piston head (11) in such a way that the sector length (L1) of the side of the skirt wall segment (50) formed on the piston head (11) is greater than the sector length (L2) of the side of the skirt wall segment (50) facing away from the piston head (11).

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.