Metering valve

US7278625B2 · kind B2 · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Alexander Moell · Tuttlingen, DE
• Hanspeter Mayer · Adnet, AT
• Gerhard Mueller · Freilassing, DE
• Michael Offenhuber · Adnet, AT
• Sven Huber · Freilassing, DE

Key dates

• Filing date: Nov 21, 2001
• Grant date: Oct 9, 2007
• Expiry date: Dec 30, 2022

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02T10/12
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A valve device for metering a fluid for metering a urea-water solution for the aftertreatment of exhaust gases from internal combustion engines, which contains elements that flex or are compressed under high pressure so that the volume of the working chamber can change in order to limit high pressures, which arise in the event of a phase change of the fluid to be metered, to a non-damaging intensity.