Patent · US Active

Method for adjusting boost pressure while regenerating a particulate filter for a direct injection engine

US8359840B2 · kind B2 · utility

7Cited by

5References

20Claims

0Family size

Assignee

Ford Global Technologies, LLC · US

Inventors

Michiel J. Van Nieuwstadt · Ann Arbor, US
Helmut Hans Ruhland · Eschweiler, DE
Moritz Klaus Springer · Hagen, DE
Thomas Lorenz · Chesterfield, US
Georg Louven · Neuwied, DE
Jan Harmsen · Simpelveld, NL

Key dates

Filing date	Nov 17, 2009
Grant date	Jan 29, 2013
Priority date	—
Expiry date	Nov 9, 2030

Classification

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

Abstract

A method for regenerating a particulate filter is disclosed. In one example, oxygen is pumped from the intake system of a direct injection turbocharged gasoline engine to the exhaust system by a compressor. The oxygen is introduced to a particulate filter at a location upstream from the particulate filter and downstream of a three-way catalyst. The oxygen may be regulated in part by adjusting compressor boost pressure in response to a state of particulate filter regeneration. Further, in one embodiment, engine NOx can be controlled by EGR.

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