Cylinder bore for a cylinder housing of an internal combustion engine, and arrangement having a cylinder bore and a piston

US11022063B2 · kind B2 · utility

Assignee

• Mahle International GmbH · DE

Inventors

• Ulrich Bischofberger · Eßlingen, DE
• Stefan Gaiselmann · Stuttgart, DE

Key dates

• Filing date: May 20, 2016
• Grant date: Jun 1, 2021
• Expiry date: May 29, 2036

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F02F3/0084
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A cylinder bore for a cylinder housing of an internal combustion engine may have a cylinder running surface, an upper reversal point and a lower reversal point at which a piston, which may be moved up and down in the cylinder bore and may have piston rings and a piston skirt, may reach a speed which approaches zero during engine operation. The cylinder bore may also have a region between the upper reversal point and the lower reversal point at which the piston may reach a maximum speed during engine operation. The cylinder bore may further have at least two circumferential depressions formed within the region, the at least two circumferential depressions each having a diameter that may be greater than a diameter of the cylinder bore above the region and below the region.