Patent · US Expired

Method and device for removing soot from exhaust gases

US4436535A · kind A · utility

23Cited by

9References

15Claims

0Family size

Assignee

Filterwerk Mann & Hummel GmbH · DE

Inventors

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

Key dates

Filing date	Mar 22, 1982
Grant date	Mar 13, 1984
Priority date	—
Expiry date	Mar 22, 2002

Classification

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

Abstract

A method and device for removing soot from the exhaust gases of a diesel-type internal combustion engine, using a soot filter in the exhaust line and a dosing device which injects a dose of a combustion-inducing substance, for example CuCl, into the soot filter by means of compressed air. The soot-combusting process is initiated automatically, in response to a critical exhaust pressure level and the simultaneous presence of a suitable temperature in the soot filter, using a pressure switch and a series-connected thermal switch. Compressed air, flowing through a bypass line, scavenges the supply line of the combustion-inducing substance, while supplying additional oxygen for the soot combustion process.

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