Patent · US Active

Piston for an internal combustion engine

US9869269B2 · kind B2 · utility

0Cited by

3References

20Claims

0Family size

Assignee

Mahle International GmbH · DE

Inventors

Rainer Scharp · Leinfelden, DE
Peter Kemnitz · Leutenbach, DE

Key dates

Filing date	May 28, 2014
Grant date	Jan 16, 2018
Priority date	—
Expiry date	Oct 16, 2034

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF02F3/20
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A piston for an internal combustion engine may include a piston head and a piston skirt. The piston head may include a piston crown, an encircling fire land, an encircling ring belt having a plurality of ring grooves and an encircling cooling duct disposed radially inwards from the ring belt. The cooling duct may be open in an axial direction away from the fire land and may be at least partially closed via a closure element. The cooling duct may have a cooling duct base and a cooling duct ceiling. The closure element may be arranged on the piston head to define the cooling duct base in a position above a lowermost ring groove of the plurality of ring grooves.

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