Patent · US Expired

Method of operating a system comprising a diesel engine and catalyst for exhaust gas purification

US7310940B2 · kind B2 · utility

0Cited by

9References

3Claims

0Family size

Assignee

UMICORE AG & CO. KG · DE

Inventors

Jurgen Gieshoff · Bad Orb, DE
Martin Votsmeir · Maintal, DE
Stephan Malmberg · Frankfurt, DE
Egbert Lox · Hanau, DE
Thomas Kreuzer · Karben, DE

Key dates

Filing date	May 18, 2004
Grant date	Dec 25, 2007
Priority date	—
Expiry date	May 18, 2024

Classification

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

Abstract

The invention relates to a method and an apparatus of operating a drive system comprising an engine and an exhaust gas purification unit containing a catalyst, where the engine emits an exhaust gas having an exhaust gas temperature and the catalyst has a catalytic activity for the purification of the exhaust gas. In the method, an aging-induced decrease in the catalytic activity of the catalyst is compensated at least part of the time by increasing the exhaust gas temperature of the engine.

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