Patent · US Expired

Exhaust gas filter for diesel engines

US4667469A · kind A · utility

12Cited by

2References

4Claims

0Family size

Assignee

Daimler-Benz AG · DE

Inventors

Joerg Abthoff · Schorndorf, DE
Hans-Dieter Schuster · Schorndorf, DE
Gunter Loose · Waiblingen, DE
Bernhard Jokl · Bad Liebenzell, DE

Key dates

Filing date	Dec 6, 1985
Grant date	May 26, 1987
Priority date	—
Expiry date	Dec 6, 2005

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02T10/12
WIPO fieldEnvironmental technology
WIPO sectorChemistry

Abstract

An exhaust gas filter for Diesel engines that consists of a filter block made of a porous ceramic material, and a plurality of ducts extending through said filter block that extend in the flow direction of the exhaust gases. The ducts in each case are alternately closed at their upstream or their downstream end, whereby the exhaust gases are forced to penetrate a filtering separating wall between two ducts. The closing means at the downstream end, are arranged so that they are staggered with respect to one another in the flow direction; in particular they are staggered by about 5 to 150 mm. The staggered arrangement of the closing means reduces the danger of a thermal damage to the filter block during the burning-off of the deposited soot.

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