Method and device for controlling an internal combustion engine
AssigneeRobert Bosch GmbH
InventorsFranz Raichle, Jens Damitz, Wolfram Gerwing, Ruediger Fehrmann, Wolfgang Fischer, Matthias Schueler, Michael Kessler, Tobias Kress
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Abstract
A device and a method for controlling an internal combustion engine, where a first variable characterizing the pressure in the combustion chamber of at least one cylinder of the internal combustion engine is measured by at least one sensor. A second variable characterizing the energy released during the combustion is ascertained from the first variable. When a threshold value of the second variable is exceeded, a third variable characterizing the combustion process is detected.
Claims8
A method for controlling an internal combustion engine, the method comprising:
- measuring a first variable characterizing a pressure in a combustion chamber of at least one cylinder of the internal combustion engine by at least one sensor;
- ascertaining a second variable characterizing an energy released during a combustion from the first variable;
- and
- detecting a third variable characterizing a combustion process in response to a threshold value of the second variable being exceeded, the third variable corresponding to one of a time and an angular position of one of a crankshaft and a camshaft at which one of a start of combustion, a center of conversion, and an end of combustion occurs.
A device for controlling an internal combustion engine, comprising:
- at least one sensor for measuring a first variable characterizing a pressure in a combustion chamber of at least one cylinder of the internal combustion engine;
- means for ascertaining, from the first variable, a second variable characterizing an energy released during a combustion;
- and
- means for detecting a third variable characterizing a combustion process in response to a threshold value of the second variable being exceeded, the third variable corresponding to one of a time and an angular position of one of a crankshaft and a camshaft at which one of a start of combustion, a center of conversion, and an end of combustion occurs.
Dependencies are inferred from the claim text.