Apparatus to remove solid particles and aerosols from a gas, especially from the exhaust gas of an internal combustion engine

US4478613A · kind A · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Johannes Brettschneider · Ludwigsburg, DE
• Klaus Dobler · Gerlingen, DE
• Gottlob Haag · Markgröningen, DE
• Ernst Linder · Mühlacker, DE
• Wilhelm Polach · Asperg, DE

Key dates

• Filing date: Aug 23, 1982
• Grant date: Oct 23, 1984
• Expiry date: Aug 23, 2002

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S55/30
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

To remove solid particles such as soot, aerosols, and the like, from the exhaust gas of an internal combustion (IC) engine, for example a Diesel engine, the solid particles and aerosols are first charged in an electrostatic field which is generated between a solid surface (2), preferably cylindrical, and pointed discharge elements, typically electrostatic spray disks (3). The solid particles will adhere together, and to the surface, to form--with respect to the original dust and soot particles and aerosols, large area flakes and agglomerates which are carried along by the gas flow, and are then separated out in a mechanical separator (7, 15, ).