Crankcase ventilation valve for internal combustion engines

US4167164A · kind A · utility

Inventor

• Max Bachmann · Friedrichshafen, DE

Key dates

• Filing date: Jan 25, 1978
• Grant date: Sep 11, 1979
• Expiry date: Jan 25, 1998

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F02B1/04
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

Crankcase ventilation valve for internal combustion engines with a valve casing which is divided into a first and a second chamber by a displaceable wall sealingly attached at the periphery, wherein the first chamber is in communication with the atmosphere and the second chamber is in communication on the one hand through an inlet tube with the crankcase and on the other hand through an outlet tube with the suction device by way of a cylindrical tubular member disposed in the second chamber, the displaceable wall and the tubular member being constructed as a non-return valve and the valve seat being surrounded by a concentric ring space which is connected to the inlet tube.