Valve for dosing the admission of volatilized fuel

US6415817B1 · kind B1 · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

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

Key dates

• Filing date: Nov 3, 2000
• Grant date: Jul 9, 2002
• Expiry date: Nov 3, 2020

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T137/8122
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A magnet valve for tank venting in motor vehicles, having at least one valve opening forming a sealing seat and having a spring-loaded valve member cooperating with the at least one sealing seat for opening and closing the valve and actuated by an electromagnet counter to the restoring force of a restoring spring. Downstream of the valve member, a flow element that throttles the flow of a gas is disposed, the shape of the flow element is adapted to the opening cross section of the sealing seat that cooperates with the valve member, for determining (metering) the flow quantity of the gas through the cross section of the flow element when the magnet valve is open. The shape of the flow element is determined (metered) in such a way that the area of the opening cross section of the effective valve seat is greater than 2.5 and preferably greater than 9 times the area of the effective cross section of the flow element.