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OBD of Diesel EGR Using Artificial Neural Networks
Technical Paper
2009-01-1427
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
To detect malfunctions of the EGR system of a passenger car diesel engine, a neural network approach was selected using Self Organizing Maps (SOM). Self Organizing Maps are self-learning technologies that can be used to retrieve typical data patterns in large data sets. This technology is very efficient for identifying if patterns from a new, modified or changed system are similar to already existing patterns. The SOM outputs a measure of similarity to ‘typical system behavior patterns’. As an OBD function, this value is a measure for system anomaly detection.
Performing dynamic tests using standard driving cycles, not only was the occurrence of a malfunction within the EGR system detected by the neural network, the cause of the malfunction could also be identified.
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Fischer, M., Boettcher, J., Kirkham, C., and Georgi, R., "OBD of Diesel EGR Using Artificial Neural Networks," SAE Technical Paper 2009-01-1427, 2009, https://doi.org/10.4271/2009-01-1427.Also In
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