Patent · US Active

Internal combustion engine

US7267045B2 · kind B2 · utility

6Cited by

8References

5Claims

0Family size

Assignee

Daimlerchrysler AG · US

Inventors

Johannes Leweux · Eßlingen, DE
Wolfgang Pellkofer · Ulm, DE
Harald Pfeffinger · Tiefenbronn, DE

Key dates

Filing date	Jul 19, 2006
Grant date	Sep 11, 2007
Priority date	—
Expiry date	Jul 19, 2026

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF02F1/20
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

In an internal combustion engine for a motor vehicle, having a piston bearing surface divided into regions of different loading and having recesses for retaining lubricant arranged at distances which are shorter in regions of high loading than in regions of lower loading in a region with high loading, the distance between the recesses decreases from one recess to the next in the direction toward top dead center area with the smallest distance being at the top dead center position of the piston.

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