Oil-separating device for crankcase gases in an internal combustion engine

US6725849B2 · kind B2 · utility

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: Apr 27, 2004
• Expiry date: Feb 3, 2023

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F01M2013/0494
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical 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 simplify the design of the oil separator and obtain easier installability, it is provided that the preliminary separator (28), the cyclone separator (30), the fine separator (32) and the valve device (36) provided, if necessary, are located on the outside (20) of the cylinder-head hood (4) and are covered by a housing half-shell (6) which, together with the outside (20) of the cylinder-head hood (4), forms a housing for the oil separator (2).