Patent · US Active

Catalytic reduction of NOx

US8480986B2 · kind B2 · utility

5Cited by

42References

52Claims

0Family size

Assignees

Daimler AG · DE
HJS Fahrezeutechnik GmbH & Co. KG · DE
Johnson Matthey Public Limited Company · GB

Inventors

Anders Andreasson · Kungsängen, SE
Guy Richard Chandler · Cambridge, GB
Claus Friedrich Goersmann · Maidstone, GB
James Patrick Warren · Cambridge, GB
Georg Huethwohl · Soest, DE

Key dates

Filing date	Aug 5, 2011
Grant date	Jul 9, 2013
Priority date	—
Expiry date	Aug 5, 2031

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02T10/40
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A system for NOx reduction in combustion gases, especially from diesel engines, incorporates an oxidation catalyst to convert at least a portion of NO to NO2, tparticulate filter, a source of reductant such as NH3 and an SCR catalyst. Considerable improvements in NOx conversion are observed.

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