Patent · US Active

Cylinder sleeve for an internal combustion engine

US11680538B2 · kind B2 · utility

1Cited by

3References

20Claims

0Family size

Assignee

Mahle International GmbH · DE

Inventors

Stefan Gaiselmann · Stuttgart, DE
Bartek Lemm · Deizisau, DE
Marco Maurizi · Stuttgart, DE

Key dates

Filing date	Dec 9, 2020
Grant date	Jun 20, 2023
Priority date	—
Expiry date	Dec 9, 2040

Classification

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

Abstract

A cylindrical sleeve for an internal combustion engine is disclosed. The cylindrical sleeve includes a hollow cylindrical sleeve body, extending along an axial direction, with an inner peripheral side that has, along the axial direction, a first axial portion and a second axial portion. The inner peripheral side in the first axial portion is either cylindrical or opens at a first opening angle towards the second axial portion. The second axial portion opens at a second opening angle away from the first axial portion that is greater than the first opening angle. A first surface roughness of the inner peripheral side in the first axial portion is greater than a second surface roughness in the second axial portion.

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