Data processing: vehicles – navigation – and relative location – Vehicle control – guidance – operation – or indication – With indicator or control of power plant
Reexamination Certificate
2008-11-12
2011-10-11
Cronin, Stephen K (Department: 3747)
Data processing: vehicles, navigation, and relative location
Vehicle control, guidance, operation, or indication
With indicator or control of power plant
C701S102000, C701S104000
Reexamination Certificate
active
08036810
ABSTRACT:
A method for determining the quality of the fuel for an internal combustion engine, in particular a direct-injection internal combustion engine in a vehicle, which is characterized by the following be performed: the internal combustion engine is operated in idle mode under predefinable operating conditions, the curve of the injection quantity, necessary for idling, over the engine temperature is determined, and the fuel quality is inferred from the curve of the injection quantity over the engine temperature.
REFERENCES:
patent: 2008/0308067 (2008-12-01), Schuckert et al.
patent: 2009/0025689 (2009-01-01), Ruggiano et al.
patent: 2009/0198433 (2009-08-01), Schumacher
patent: 10 2007 019 280 (2008-11-01), None
Hondros Christos
Schuckert Marko
Schumacher Herbert
Cronin Stephen K
Kenyon & Kenyon LLP
Najmuddin Raza
Robert & Bosch GmbH
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