Coagulator for an exhaust gas scrubbing system for internal combustion engines

US4890455A · kind A · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Rolf Leonhard · Schwieberdingen, DE
• Bernhard Lucas · Alagón, ES

Key dates

• Filing date: Mar 26, 1988
• Grant date: Jan 2, 1990
• Expiry date: Mar 26, 2008

Classification

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

Abstract

For generating an electrostatic field, a coagulator for an exhaust gas scrubbing system for internal combustion engines has an electrode, which extends in an insulated manner within a housing. The electrode is braced on the housing via at least one insulator. To prevent the formation of a short-circuiting bridge between the electrode and the housing as a consequence of the deposition of so-called agglomerates on the insulator surface, the insulator is heated to a surface temperature of over 400.degree. C. In order to attain an extremely compact insulator and so that heating it will require little energy, the insulator is embodied in disk-like fashion and has a spiral heating conduit, through which hot gases flow, disposed in its interior. The hot gases are diverted from a partial flow of the engine exhaust gas, or are drawn from the exhaust gas of a soot burner.