Patent · US Expired

Method of removing soot from exhaust gases

US4516990A · kind A · utility

26Cited by

1References

9Claims

0Family size

Assignee

Filterwerk Mann & Hummel GmbH · DE

Inventors

Hans Erdmannsdorfer · Ludwigsburg, DE
Manfred Wagner · Triftern, DE
Rudi Numrich · Waiblingen, DE
Gerd Weyh · Leonberg, DE

Key dates

Filing date	Jul 16, 1984
Grant date	May 14, 1985
Priority date	—
Expiry date	Jul 16, 2004

Classification

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

Abstract

A method of removing soot from the exhaust gases of internal combustion engines, especially of the diesel-type, using an exhaust filter which collects the soot and a dosing device which, when triggered by a pressure switch and a series-connected temperature switch, injects a dose of a combustion-inducing substance onto the soot layer with the aid of compressed air. The combustion-inducing substance consists of CuCl and NH.sub.4 NO.sub.3 which are stored as a mixture in a single container or as separate ingredients in two containers.

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