Data processing: vehicles – navigation – and relative location – Vehicle control – guidance – operation – or indication – With indicator or control of power plant
Reexamination Certificate
2007-11-08
2010-10-05
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
C123S435000, C701S111000, C703S008000
Reexamination Certificate
active
07809489
ABSTRACT:
A method for estimating the cylinder interior pressure of an internal combustion engine from a cylinder pressure model having at least the input variables load, speed of rotation, and crank angle (Ppressure model), which forms the cylinder interior pressure (Pgas) to be determined, corrected by a pressure correction value (ΔPgas). The pressure correction value (ΔPgas) is determined from an observation of the alternating moments at the crankshaft. The modeled value of the cylinder interior pressure from the pressure model is obtained as a pre-control value, and corrected with a correction value formed from the measured value of the non-uniformity of rotation.
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Koeller Malte
Lezius Ulf
Magnor Olaf
Schnaubelt Michael
Schultalbers Matthias
Collard & Roe P.C.
Cronin Stephen K
IAV GmbH Ingenieurgesellschaft Auto und Verkehr
Najmuddin Raza
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