Patent · US Active

Method for regenerating a particle filter

US11377992B2 · kind B2 · utility

0Cited by

1References

9Claims

0Family size

Assignee

VOLKSWAGEN AKTIENGESELLSCHAFT · DE

Inventors

Stefan Paukner · Wolfsburg, DE
Falk-Christian Baron Von Ceumern-Lindenstjerna · Braunschweig, DE

Key dates

Filing date	Jan 10, 2018
Grant date	Jul 5, 2022
Priority date	—
Expiry date	Jun 22, 2038

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF01N2900/1606
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

The invention relates to a method for regenerating a particulate filter in the exhaust gas channel of an internal combustion engine. Here, the particulate filter is divided into several zones for determining the loading state, and, at the same time, a temperature distribution over the cross section of the particulate filter is determined. In order to prevent the soot retained in the edge zones of in the particulate filter from being insufficiently oxidized, when it is ascertained that the edge zones have been sufficiently loaded, the exhaust gas temperature is raised to a temperature which, in spite of the heat losses in the edge areas, lies above the temperature at which oxidation of the soot particles can take place. The invention further relates to an internal combustion engine having an exhaust gas channel and a particulate filter arranged in the exhaust gas channel, said internal combustion engine being configured to carry out such a method.

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