Oil mist separator

US8388713B2 · kind B2 · utility

Assignee

• Mahle International GmbH · DE

Inventors

• Andreas Enderich · Eßlingen, DE
• Michael Feil · Munich, DE
• Wolfgang Früh · Engen, DE
• Ulrich Hütter · Kirchheim unter Teck, DE
• Stefan Ruppel · Leimen, DE
• Hartmut Sauter · Renningen, DE
• Yakup Özkaya · Kornwestheim, DE

Key dates

• Filing date: Dec 9, 2008
• Grant date: Mar 5, 2013
• Expiry date: May 23, 2029

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F01M2013/0438
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A positive crankcase ventilation oil mist separator system has a first separator unit, wherein the first separator unit includes at least one filter body arranged in a blow-by gas path such that blow by gas flows through the filter body; a second separator unit, wherein the second separator is an impactor separator arranged in a bypass path that bypasses the first separator unit; and a bypass valve, which opens the bypass path as soon as a differential pressure at the first separator unit exceeds a predefined value, wherein the second separator unit comprises an impact wall formed by a section of the filter body of the first separator unit, and a flow directing element which directs the blow-by gas flow against the impact wall when the blow-by gas path is open.