Valve for metering introduction of evaporated fuel into an induction duct of an internal combustion engine

US5560585A · kind A · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Erwin Krimmer · Plüderhausen, DE
• Wolfgang Schulz · Wunstorf, DE
• Tilman Miehle · Weingarten, DE

Key dates

• Filing date: Aug 12, 1994
• Grant date: Oct 1, 1996
• Expiry date: Aug 12, 2014

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F02M2025/0845
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A tank ventilation valve suitable for metering introduction of fuel evaporated from the fuel tank of a mixture-compressing, externally ignited internal combustion engine into an induction duct of the internal combustion engine. The valve closing element has at least one damper element which protrudes through the valve closing in the axial direction and which forms a first damping surface directed towards the valve seat body on the first end surface of the valve closing element, and a second damping surface directed towards the electromagnet on the second end surface of the valve closing element so that an impact by the valve closing element on the valve seat body or on the magnet core is avoided or damped.