Data processing: vehicles – navigation – and relative location – Vehicle control – guidance – operation – or indication – With indicator or control of power plant
Reexamination Certificate
2011-02-22
2011-02-22
Kwon, John T (Department: 3747)
Data processing: vehicles, navigation, and relative location
Vehicle control, guidance, operation, or indication
With indicator or control of power plant
C123S434000
Reexamination Certificate
active
07894972
ABSTRACT:
By a respective cylinder-specific lambda regulator, a regulator value for influencing the air/fuel ratio in the respective cylinder is determined as a function of the cylinder-specific air/fuel ratio measured for the respective cylinder. The regulator value is monitored for the attainment of a first predefined threshold value, and when the latter is reached, a lambda quality value is determined which is representative of the deviation of the measured cylinder-specific air/fuel ratios assigned to the respective cylinders. The regulator value is monitored for the attainment of a second predefined threshold value which is representative of a more pronounced regulating intervention than the first threshold value. When the second predefined threshold value is reached, the lambda quality value is determined. If the lambda quality value assigned to the first threshold value is lower than the value assigned to the second threshold value, unstable regulating behavior is identified. Stable regulating behavior is identified otherwise.
REFERENCES:
patent: 6840214 (2005-01-01), Yasui
patent: 7051516 (2006-05-01), Pott et al.
patent: 7331214 (2008-02-01), Aliakbarzadeh et al.
patent: 7726276 (2010-06-01), Aliakbarzadeh et al.
patent: 7762244 (2010-07-01), Aliakbarzadeh
patent: 2004/0003804 (2004-01-01), Yasui
patent: 2007/0119436 (2007-05-01), Aliakbarzadeh et al.
patent: 10304245 (2004-07-01), None
patent: 10304245 (2004-07-01), None
patent: 102004004291 (2005-01-01), None
patent: 102004004291 (2005-01-01), None
patent: 1132599 (2001-01-01), None
patent: 1132599 (2001-09-01), None
International Search Report and Written Opinion; PCT/EP2007/055315; pp. 11, Sep. 17, 2007.
Aliakbarzadeh Reza
Migueis Carlos Eduardo
Continental Automotive GmbH
King & Spalding L.L.P.
Kwon John T
LandOfFree
Method and device for operating an internal combustion engine does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and device for operating an internal combustion engine, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and device for operating an internal combustion engine will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2632966