Valve with radial recesses

US7000856B2 · kind B2 · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Patrick Mattes · Stuttgart, DE
• Friedrich Boecking · Stuttgart, DE

Key dates

• Filing date: Mar 23, 2002
• Grant date: Feb 21, 2006
• Expiry date: Aug 26, 2022

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F02M61/168
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A valve having a valve needle axially displaceable in a bore of a valve body and which has a conical valve needle tip having a radial valve sealing face, which in the closing position comes to rest on a conical inner wall of the valve body on the closed end of the bore. In the inner wall of the valve body there is at least one opening which connects the bore with the outside of the valve body. The valve includes two radial recesses disposed in the valve needle tip or in the inner wall of the valve body, and one of the radial recesses is located upstream and the other radial recess is located downstream from the position of the valve sealing face, in the closing position of the valve.