Patent · US Active

Exhaust aftertreatment system and method for regenerating a particulate filter

US10995645B2 · kind B2 · utility

2Cited by

1References

10Claims

0Family size

Assignee

VOLKSWAGEN AKTIENGESELLSCHAFT · DE

Inventors

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

Key dates

Filing date	Jun 12, 2019
Grant date	May 4, 2021
Priority date	—
Expiry date	Jun 12, 2039

Classification

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

Abstract

An exhaust aftertreatment system for an internal combustion engine has an exhaust system having at least one three-way catalyst near the engine, wherein a particulate filter is arranged downstream from the three-way catalyst, preferably in an underbody installation in a motor vehicle. A heated catalyst, which has at least one heating stage that can be heated by means of an electric heating element, is provided upstream from the at least one three-way catalyst and downstream from the particulate filter. The at least one electrically heatable heating stage is supplied with electric power directly from a generator that is operatively connected to the internal combustion engine, so that heating of the heated catalyst takes place essentially independently of the charge status of the vehicle battery.

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