Pipe evaporator for feeding additional fuel into the exhaust gas

US5771689A · kind A · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Marc Bareis · Markgröningen, DE
• Horst Harndorf · Schwieberdingen, DE
• Thomas Theml · Leinfelden, DE

Key dates

• Filing date: Nov 21, 1996
• Grant date: Jun 30, 1998
• Expiry date: Nov 21, 2016

Classification

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

Abstract

A device for re-treating exhaust gases of an internal combustion engine is proposed, in which to promote the efficiency of a downstream reducing catalytic converter, fuel is metered via a metering valve and introduced into the exhaust system via an evaporator device. A metal sheath is provided with a sheathed glow-plug element that is used as the evaporator device and via a flow opening on a face end introduces an evaporated reducing agent into the exhaust gas stream.