Device and method for the heating of a catalytic converter for a supercharged internal combustion engine

US6637204B2 · kind B2 · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Dietmar Ellmer · Regensburg, DE
• Jörg Neugärtner · Regensburg, DE

Key dates

• Filing date: Dec 14, 2001
• Grant date: Oct 28, 2003
• Expiry date: Dec 14, 2021

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02T10/12
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

In a two-stage concept for supercharging of internal combustion engines, in which the first stage is performed by an exhaust-gas turbocharger and the second stage by an electrically driven compressor, the compressor is also used to provide the secondary air used for the heating of a catalytic converter. In this manner, the catalytic converter quickly reaches an efficient operating temperature.