Method for reducing particle emissions containing carbon of diesel motors and corresponding system

US6938409B2 · kind B2 · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Rudolf Birckigt · Neunkirchen, DE
• Thomas Hammer · Iserlohn, DE
• Tetsuo Kishimoto · Tokyo, JP

Key dates

• Filing date: Nov 20, 2001
• Grant date: Sep 6, 2005
• Expiry date: Nov 20, 2021

Classification

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

Abstract

Exhaust gas amitted from a diesel engine flows through a ceramic soot filter in which particles contained in the exhaust are deposited and oxidized to regenerate the filter. The filter is regenerated by non-thermal, electric surface creeping discharge on filter surfaces covered with particles. In addition, nitrogen oxides may be reduced by selective catalytic reduction. The system is designed to ensure operation reliability and environmental compatibility.