Patent · US Expired

Operating method for an internal combustion engine which operates with an exhaust-gas aftertreatment system

US6865884B2 · kind B2 · utility

5Cited by

6References

22Claims

0Family size

Assignees

Daimlerchrysler AG · US
Purem Abgassysyteme GmbH & Co. KG · DE

Inventors

Tillmann Braun · Winnenden, DE
Georg Huthwohl · Soest, DE

Key dates

Filing date	Mar 21, 2003
Grant date	Mar 15, 2005
Priority date	—
Expiry date	Mar 21, 2023

Classification

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

Abstract

In an operating method for internal combustion engines which operate with exhaust-gas aftertreatment systems, in particular diesel internal combustion engines, a plurality of operating programs are used. The first of these programs, as an initial stage, works on the basis of automatic regeneration. The second of these programs provides measures which assist regeneration, for example by increasing the exhaust-gas temperature, in the event of conditions which are unfavourable for regeneration, for example on account of unfavourable driving cycles. The third of these programs has the purpose of reactivating the damaged components in the event of non-irreversible damage to the components of the exhaust-gas system.

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