Patent · US Expired

Oil separating device for crankshaft gases of an internal combustion engine

US6811586B2 · kind B2 · utility

5Cited by

2References

9Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Juergen Stegmaier · Lörrach, DE
Bruno Hezel · Stuttgart, DE
Dietmar Uhlenbrock · Stuttgart, DE

Key dates

Filing date	Feb 3, 2003
Grant date	Nov 2, 2004
Priority date	—
Expiry date	May 22, 2023

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S55/19
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

The invention concerns an oil separator (2) for crankcase gases of an internal combustion engine, comprising a preliminary separator (28), a cyclone separator (30), a fine separator (32) and, if necessary, a valve device (36) that are provided in a cascade arrangement on a cylinder-head cover (4) of the internal combustion engine; in order to reduce the mutual interference of flowing crankcase gas and separated fluid, an oil drain opening (44) is provided upstream from the cyclone separator (30) in the flow or cascade direction, through which oil separated in the preliminary separator can be returned.

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