Patent · US Active

Cylinder liner for an internal combustion engine

US11815045B2 · kind B2 · utility

0Cited by

3References

20Claims

0Family size

Assignee

Mahle International GmbH · DE

Inventors

Stefan Gaiselmann · Stuttgart, DE
Bartek Lemm · Deizisau, DE
Ricardo Daltio Riceto · Stuttgart, DE
Thomas Stibleichinger · Oberleiten, AT

Key dates

Filing date	Jun 13, 2022
Grant date	Nov 14, 2023
Priority date	—
Expiry date	Jun 13, 2042

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF02F1/18
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A cylinder liner for an internal combustion engine may include a hollow-cylindrical liner body, which may have an inner circumferential surface including a first axial portion and a second axial portion. The first axial portion may open at a first opening angle towards the second axial portion. The second axial portion may open at a second opening angle away from the first axial portion. The second opening angle may be greater than the first opening angle. A first surface roughness in the first axial portion may be greater than a second surface roughness in the second axial portion. A plateau aspect in the second axial portion, which may be defined as R3p=Rvk/(Rpk+Rk), may be 0.2 to 1.6. A texture height in the second axial portion, which may be defined as R3k=Rpk+Rk+Rvk, may be 0.4 μm or less.

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