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US 8,027,782 B2Granted
Pattern recognition for random misfire
AssigneeGM Global Technology Operations LLC
InventorsTameem K. Assaf, David S. Mathews, John V Bowman, Sanjeev M. Naik
Life of this patent
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Abstract
A control system includes a jerk determination module and a misfire confirmation module. The jerk determination module determines a jerk of a crankshaft associated with a firing event in an engine. The misfire confirmation module selectively confirms that a misfire detected in the engine is valid based on the jerk.
Claims20
A control system, comprising:
- a jerk determination module that determines a jerk of a crankshaft associated with a firing event in an engine;
- and
- a misfire confirmation module that selectively confirms that a misfire detected in the engine is valid based on the jerk, wherein the jerk is a time derivative of an acceleration of the crankshaft associated with the firing event.
A method, comprising:
- determining a jerk of a crankshaft associated with a firing event in an engine;
- and
- selectively confirming that a misfire detected in the engine is valid based on the jerk, wherein the jerk is a time derivative of an acceleration of the crankshaft associated with the firing event.
Dependencies are inferred from the claim text.