Patent · US Active

Regeneration method for exhaust-gas aftertreatment systems

US10047653B2 · kind B2 · utility

0Cited by

10References

5Claims

0Family size

Assignee

UMICORE AG & CO. KG · DE

Inventors

Frank Adam · Alzenau, DE
Sebastian Mueller · Ludwigshafen, DE
David Palm · Conway, US
Susanne KUNERT · Seeheim-Jugenheim, DE

Key dates

Filing date	Mar 24, 2015
Grant date	Aug 14, 2018
Priority date	—
Expiry date	Apr 12, 2035

Classification

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

Abstract

The present invention relates to a method for regenerating exhaust-gas aftertreatment systems capable of storing nitrogen oxides in lean exhaust gas, and in rich exhaust gas of reducing nitrogen oxides to nitrogen. The invention is used in exhaust-gas aftertreatment systems which consist of at least one NOx storage catalyst arranged near the engine and at least one NOx storage catalyst located in the underbody of the vehicle and are intended to clean the exhaust gas of spark-ignition engines predominantly run on a lean mixture.

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