Patent · US Expired

Method of removing soot which has been trapped in an exhaust gas filter of an internal combustion engine

US4670233A · kind A · utility

10Cited by

8References

16Claims

0Family size

Assignee

Filterwerk Mann & Hummel GmbH · DE

Inventors

Hans Erdmannsdoerfer · Dobel, DE
Rudi Numrich · Waiblingen, DE
Manfred Wagner · Triftern, DE
Gerd Weyh · Leonberg, DE

Key dates

Filing date	Oct 3, 1985
Grant date	Jun 2, 1987
Priority date	—
Expiry date	Oct 3, 2005

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S55/30
WIPO fieldEnvironmental technology
WIPO sectorChemistry

Abstract

The invention relates to a means and a method for removing soot in an exhaust gas filter of an internal combustion engine, more especially a diesel engine, by reducing the ignition temperature during the operation of the internal combustion engine. For this purpose, the ignition is brought about by the addition of at least one oxidizing agent. A plurality of particles of at least one combustible substance may also be caused to flow or burn, and the particles may be passed through the exhaust gas stream to the filter, so that the soot layer is ignited.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.