Valve for controlling a connection in a high-pressure fuel injection apparatus for an internal combustion engine

US7513441B2 · kind B2 · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Nestor Rodriguez-Amaya · Stuttgart, DE
• Christoph Hollmann · Ludwigsburg, DE
• Michael Mennicken · Wimsheim, DE
• Matthias Beck · Munich, DE
• Hubert Greif · Markgröningen, DE
• Falk-Alexander Petry · Stuttgart, DE
• Thilo Rzymann · Backnang, DE

Key dates

• Filing date: Aug 4, 2004
• Grant date: Apr 7, 2009
• Expiry date: Nov 21, 2025

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F02M2200/04
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

Disclosed is a valve comprising a valve member (72) that is guided so as to be movable in the direction of the longitudinal axis (73) thereof, extends into a valve pressure chamber (77), and is provided with a sealing surface (81) on a face which runs perpendicular to the longitudinal axis (73) thereof inside the valve pressure chamber (77). Said sealing surface (81) of the valve member (72) cooperates with a valve seat (79) that runs perpendicular to the longitudinal axis (73) thereof so as to at least largely close an opening (78) which is surrounded by the valve seat (79) relative to the valve pressure chamber (77). A connection (64) to a low-pressure area lies immediately next to said opening (78). The inventive valve member (72) is also provided with a peg (83) which extends into the connection (64) and by means of which liquid that flows out of the valve pressure chamber (77) when the sealing surface (81) of the valve member (72) is lifted from the valve seat (79) is directed in such a way that said liquid applies at least nearly no resulting force onto the valve member (72) in the direction of the longitudinal axis (73) thereof.