Method for operating an internal combustion engine, method for switching off an internal combustion engine and engine control device
Patents
Language: |
Английский |
Type: |
Invention |
Number |
US 9416746 B2 |
Request number: |
13/911,906 |
Request date: |
Jun 6, 2013 |
patent.field.start_date: |
|
Registration date: |
Aug 16, 2016 |
patent.field.request_publication_date: |
|
Authors |
Harmsen J.
,
Schneider M.
,
Dubkov A.A.
,
Angst M.
|
Affiliations |
1 |
Ford Global Technologies, LLC, Dearborn, MI (US)
|
|
A method for operating an internal combustion engine having a lean NOx trap connected downstream is provided. The method comprises in a normal operating mode, operating the internal combustion engine with a lean fuel/air mixture, and in a special operating mode, operating the internal combustion engine with a rich fuel/air mixture in order to bring about regeneration of the lean NOx trap, wherein a changeover from the normal operating mode to the special operating mode takes place when switching off of the internal combustion engine is expected.