Data processing: vehicles – navigation – and relative location – Vehicle control – guidance – operation – or indication – With indicator or control of power plant
Reexamination Certificate
2006-09-26
2006-09-26
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, C123S406200, C073S116070
Reexamination Certificate
active
07113861
ABSTRACT:
A method, system, and machine-readable storage medium for determining a predetermined operating condition of an internal combustion engine are disclosed. In operation, the method, system and machine-readable storage medium measure a cylinder pressure in at least one combustion chamber at a predetermined point in a combustion cycle. Next, the method, system, and machine-readable storage medium determine at least a first value for an operating parameter of the engine using the measured cylinder pressure, determine a second value for the operating parameter of the engine using data received from at least one engine sensor, and then generate a predetermined signal if a difference between the first value and the second value has a predetermined relationship.
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Caterpillar Inc.
Kwon John T.
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