Crank chamber venting arrangement for an internal combustion engine

US5697350A · kind A · utility

Assignee

• Mercedes-Benz Group AG · DE

Inventors

• Edgar Brutsch · Stuttgart, DE
• Erhard Rau · Weilheim, DE

Key dates

• Filing date: Feb 28, 1997
• Grant date: Dec 16, 1997
• Expiry date: Feb 28, 2017

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F01M2013/0488
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

In a crank chamber venting arrangement for an internal combustion engine including a crankcase defining a crank chamber and having integrally formed in an end wall thereof an oil separating chamber disposed at the top end of the crank case, a crank chamber venting passage extending between the crank chamber and the separating chamber and a return passage extending between the separating chamber and the crank chamber and including a siphon, the crank chamber venting passage and the oil return passage including the siphon are open at the end wall of the crankcase and are closed by a cover and the separating chamber is open at the top and closed by a cylinder head mounted on the crankcase such that the passages and the separating chamber can be formed integrally during casting of the crankcase without the use of sacrificial cores.