Method for identifying misfire events of an internal combustion engine
First Claim
1. A method for identifying misfire events in an internal combustion engine having a plurality of cylinders, a crankshaft and a crankshaft position sensor, the method comprising the steps of:
- operating the internal combustion engine to rotate the crankshaft;
measuring rotational quantities of the crankshaft corresponding to events created by each of the plurality of cylinders during operation of the internal combustion engine;
correcting the rotational quantities measured to remove periodic position irregularities to generate a corrected temporal signal;
generating an acceleration signal of the crankshaft using the corrected temporal signal;
applying a recurrent neural network to the acceleration signal; and
identifying misfire events as a function of the acceleration signal.
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Abstract
A method for identifying engine combustion failure of an internal combustion engine having a plurality of cylinders, a crankshaft and a crankshaft position sensor includes the steps of operating the internal combustion engine to rotate the crankshaft, measuring rotational quantities of the crankshaft corresponding to events created by each of the plurality of cylinders during operation of the internal combustion engine, correcting the rotational quantities measured to remove periodic position irregularities to generate a corrected temporal signal, generating an acceleration signal of the crankshaft using the corrected temporal signals, and identifying combustion failures as a function of the acceleration signal. A time-lagged recurrent neural network utilizes the acceleration signal, along with other engine parameters to identify the cylinder-specific misfire events.
56 Citations
13 Claims
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1. A method for identifying misfire events in an internal combustion engine having a plurality of cylinders, a crankshaft and a crankshaft position sensor, the method comprising the steps of:
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operating the internal combustion engine to rotate the crankshaft; measuring rotational quantities of the crankshaft corresponding to events created by each of the plurality of cylinders during operation of the internal combustion engine; correcting the rotational quantities measured to remove periodic position irregularities to generate a corrected temporal signal; generating an acceleration signal of the crankshaft using the corrected temporal signal; applying a recurrent neural network to the acceleration signal; and identifying misfire events as a function of the acceleration signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method for identifying misfire events of an internal combustion engine having a plurality of cylinders, a crankshaft and a crankshaft position sensor, the method comprising the steps of:
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operating the internal combustion engine to combust an air/fuel mixture in each of the plurality of cylinders; receiving a timing signal identifying when each of the plurality of cylinders combusts the air/fuel mixture; determining an acceleration signal of the crankshaft using the timing signal; applying a recurrent neural network to the acceleration signal; and identifying misfire events as a function of the acceleration signal.
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Specification