Patent · US Expired

Cylinder liner of an internal combustion engine

US6640765B2 · kind B2 · utility

12Cited by

5References

6Claims

0Family size

Assignee

Daimlerchrysler AG · US

Inventors

Klaus Land · Neckargemünd, DE
Franz Rueckert · Esslingen am Neckar, DE
Peter Stocker · Murrhardt, DE

Key dates

Filing date	Sep 20, 2002
Grant date	Nov 4, 2003
Priority date	—
Expiry date	Sep 20, 2022

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T29/49272
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

In a cylinder liner of an internal combustion engine for casting into a light-metal crankcase to be cast, in order, during the casting in of the cylinder liner, to achieve as good a binding as possible of the cylinder liner to the surrounding casting material, the cylinder liner has on the outer circumference, in the region of the upper dead center of the piston rings of a piston guided in the liner, an activation layer which consists of a material which, due to the heat effect of the liquid casting material, connects metallically more rapidly to the latter than the liner material, and in that the cylinder liner has a rough surface on the outer circumference following the region of the upper dead center.

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