Method For Correcting a Measured Cylinder Pressure of an Internal Combustion Engine
AssigneeRobert Bosch GmbH
InventorUwe Kassner
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Abstract
A method for correcting a measured cylinder pressure of an internal combustion engine, in which a cylinder pressure sensor (16) is connected to a combustion chamber (4) via a duct (21), disturbing portions resulting from whistle oscillations being suppressed by determining an oscillation frequency of a gas oscillation caused in the duct (21) during a power stroke and filtering the measurement values of the cylinder pressure sensor (16) using a band-stop filter having the previously determined oscillation frequency.
Claims9
1-8. (canceled)
A method for correcting a measured cylinder pressure of an internal combustion engine, in which a cylinder pressure sensor is connected via a duct to a combustion chamber, the method comprising:
- determining an oscillation frequency of a gas oscillation caused in the duct during a power stroke;
- and
- filtering measurement values of the cylinder pressure sensor by a band-stop filter having a previously determined oscillation frequency.
A control device for an internal combustion engine for correcting a measured cylinder pressure of the engine, in which a cylinder pressure sensor is connected via a duct to a combustion chamber, the device comprising:
- an arrangement for determining an oscillation frequency of a gas oscillation caused in the duct during a power stroke;
- and
- an arrangement for filtering measurement values of the cylinder pressure sensor by a band-stop filter having a previously determined oscillation frequency.
Dependencies are inferred from the claim text.