Patent · US Expired

Method for reducing pollutant emission in motor vehicles

US6185930A · kind A · utility

14Cited by

5References

6Claims

0Family size

Assignee

FEV MOTORENTECHNIK GMBH · DE

Inventors

Gerhard Lepperhoff · Eschweiler, DE
Hartmut Luders · Aachen, DE
Kirsten Hentschel · Aachen, DE
Bernhard Luers · Aachen, DE

Key dates

Filing date	Apr 9, 1999
Grant date	Feb 13, 2001
Priority date	—
Expiry date	Apr 9, 2019

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF01N3/0892
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A method of reducing pollutants in an exhaust gas of an internal-combustion engine includes the following steps: producing, at a first location, a reactive gas component NO.sub.2 from at least one part of the NO content of the exhaust gas by reaction with the oxygen, contained in the exhaust gas, under an energy effect; and reactively converting the NO.sub.2 in a pollutant retaining system situated at a second location downstream of the first location as viewed in the flow direction.

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