Mahle International Gmbh

Michael Feil

Stefan Ruppel

Yakup Özkaya

Andreas Enderich

Hartmut Sauter

Ulrich Hütter

Mirko Braun

Edwin Hartmann

Wolfgang Früh

The invention relates to a cylinder head () of an internal combustion engine, comprising at least one hollow camshaft () which forms an exhaust for blow-by gases containing oil mist from the crank housing and is also embodied as an oil mist pre fractionator for the preliminary separation of the oil part from these gases. Furthermore, an oil mist post-fractionator () is axially arranged on the end of the camshaft (), in order to carry out an especially effective separation of oil dissolved in the blow-by gases.

Cylinder head of an internal combustion engine

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.

Oil mist separator

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Bayreuth, Germany

Michael Feil