Patent · US Active

Exhaust gas after-treatment unit for an internal combustion engine and procedure for using a drive mechanism with such an exhaust gas after-treatment unit

US10502107B2 · kind B2 · utility

1Cited by

2References

12Claims

0Family size

Assignee

Daimler AG · DE

Inventors

Johannes Bleckmann · Stuttgart, DE
Claudia Essmann · Stuttgart, DE
Uwe Gaertner · Winnenden, DE
Alexander Massner · Eßlingen, DE
Michael Stiller · Waiblingen, DE

Key dates

Filing date	Nov 14, 2016
Grant date	Dec 10, 2019
Priority date	—
Expiry date	Nov 14, 2036

Classification

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

Abstract

An exhaust gas after-treatment unit for an internal combustion engine, particularly for a motor vehicle, includes a first selective catalytic reduction (SCR) catalytic converter through which the exhaust gas from the internal combustion engine can flow and at least one particle filter for retaining the soot particles from the exhaust gas. The particle filter, which is located downstream from the first SCR catalytic converter, is equipped with a heavy metal and precious metal free catalyzing coating which oxidizes the soot particles retained by the particle filter, where downstream from the particle filter there is a second SCR catalytic converter through which the exhaust gas can flow.

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