Crankcase ventilation apparatus

US9932869B2 · kind B2 · utility

Assignee

• Mahle International GmbH · DE

Inventors

• Dimitri An · Leutenbach, DE
• Steve Beez · Masserberg, DE
• Armando Coelho · Stuttgart, DE
• Alfred Elsaesser · Keltern, DE
• Thomas Fallscheer · Stuttgart, DE
• Volker Kirschner · Rochlitz, DE
• Thomas Riemay · Bad Marienberg, DE
• Stefan Ruppel · Leimen, DE

Key dates

• Filing date: Nov 13, 2015
• Grant date: Apr 3, 2018
• Expiry date: Mar 2, 2036

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F01M2013/0427
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A vehicle may include an internal combustion engine having a crankcase and a supercharging apparatus, and a crankcase ventilation apparatus having at least one oil-separating apparatus including at least one oil separator. An oil return line may communicate separated oil from the crankcase ventilation apparatus to the crankcase. An ejector pump may be driven via a compressed air flow of the supercharging apparatus and may be configured to generate an underpressure for driving a blow-by gas. The crankcase ventilation apparatus may include a pump control valve configured to at least one of regulate and control the compressed air flow through the ejector pump.