Device and method for producing an operating medium for a motor vehicle

US7735315B2 · kind B2 · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Marc Bareis · Markgröningen, DE
• Frank Ilgner · Stuttgart, DE
• Horst Harndorf · Schwieberdingen, DE
• Nils Steinbach · Stuttgart, DE

Key dates

• Filing date: Sep 8, 2005
• Grant date: Jun 15, 2010
• Expiry date: Dec 29, 2025

Classification

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

Abstract

The invention relates to a device and a method for producing an operating medium for a motor vehicle, especially for use in the exhaust gas post-treatment of the motor vehicle. According to said method, an operating medium is produced from an initial product and air using a catalyst device. Said initial product is heated and mixed with air and the heated mixture of initial product/air is fed to the catalyst device. A part of the initial product is converted to the gaseous phase by means of a preheating element and is entrained by a stream of air when leaving the preheating element, said stream of air leading to a combustion chamber. The method allows to efficiently produce an operating medium, especially a reducing agent for regenerating NOx storage catalysts.