Patent · US Active

Aftertreatment heat management by controlled exhaust-gas recirculation with variable co-current flow upstream of first catalyst

US11725611B2 · kind B2 · utility

0Cited by

0References

20Claims

0Family size

Assignee

Ford Global Technologies, LLC · US

Inventors

Joerg Kemmerling · Monschau, DE
Michael Forsting · Rheydt, DE
Frank Wunderlich · Netphen, DE

Key dates

Filing date	Dec 8, 2022
Grant date	Aug 15, 2023
Priority date	—
Expiry date	Dec 8, 2042

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02T10/12
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

Methods and systems are provided for an exhaust system. In one example, the exhaust system includes an aftertreatment device and a recirculation passage. A recirculation valve is positioned in the recirculation passage and configured to control an amount of recirculated exhaust gas flowing through the recirculation passage to the aftertreatment device. The exhaust system further includes a diverter valve configured to control a flow of engine exhaust gases to different portions of a catalyst of the aftertreatment device.

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