Pressure control valve

US6679475B2 · kind B2 · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Helmut Rembold · Stuttgart, DE
• Walter Teegen · Waiblingen, DE
• Walter Lorch · Zaberfeld, DE
• Gerhard Wiltschek · Stuttgart, DE
• Klaus Geistefeldt · Arnstorf, DE
• Juergen Haller · Sachsenheim, DE
• Uwe Mueller · Cleebronn, DE
• Harald Lang · Markgröningen, DE

Key dates

• Filing date: Feb 14, 2002
• Grant date: Jan 20, 2004
• Expiry date: Jul 7, 2022

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F02M2200/18
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A pressure control valve serves to regulate the fuel pressure in a fuel system. The pressure control valve includes a valve housing, at least one inlet, at least one outlet, and at least one prestressed, electrically actuatable, and at least regionally ball-shaped valve member. The valve member cooperates with a valve seat structurally connected to the housing. To make it possible to achieve stable closed- and/or open-loop control properties of the pressure control valve, it is proposed that the valve seat widen conically toward the valve member, and the ball diameter of the valve member is selected such that with the valve closed, the valve member touches the valve seat in the vicinity of its farther end.