Patent · US Active

Method and device for the exhaust gas aftertreatment of a combustion engine

US10941689B2 · kind B2 · utility

2Cited by

0References

15Claims

0Family size

Assignee

VOLKSWAGEN AKTIENGESELLSCHAFT · DE

Inventors

Stefan Paukner · Wolfsburg, DE
Falk-Christian Baron Von Ceumern-Lindenstjerna · Braunschweig, DE
Michael Manz · Langenhagen, DE
Michael Kaack · Bochum, DE

Key dates

Filing date	Aug 7, 2019
Grant date	Mar 9, 2021
Priority date	—
Expiry date	Aug 7, 2039

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02T10/12
WIPO fieldEnvironmental technology
WIPO sectorChemistry

Abstract

A method for the exhaust gas aftertreatment of a combustion engine having an exhaust system in which at least three catalytic converters and at least three lambda probes are disposed. Downstream of a first catalytic converter, an actively heatable catalytic converter is provided, which is actively heated at a start of the combustion engine. The lambda control of the combustion engine is carried out in each case by that lambda probe disposed downstream of the respective last catalytic converter to reach the light-off temperature thereof. Also, an exhaust gas aftertreatment system for implementing such a method.

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