Knock Feature Extraction in Spark Ignition Engines Using EEMD-Hilbert Transform

2016-01-0087

04/05/2016

Event
SAE 2016 World Congress and Exhibition
Authors Abstract
Content
This paper reports an investigation of knock detection in spark ignition (SI) engines using EEMD-Hilbert transform based on the engine cylinder block vibration signals. Ensemble Empirical Mode Decomposition (EEMD) was used to de-compose the signal and detect knock characteristic. Hilbert transform was used to analysis the frequency information of knock characteristics. The result shows that for cylinder block vibration signals, the EEMD algorithm could extract the knock characteristic (include light knock), and the Hilbert transform result shows that the instantaneous of knock characteristics concentrate in 5000-10000Hz. At last, the knock window is then determined, based on which a new knock intensity evaluation factor K is proposed, and the results show that, the parameter K is reasonable and effective.
Meta TagsDetails
DOI
https://doi.org/10.4271/2016-01-0087
Pages
11
Citation
Bi, F., Ma, T., and Zhang, J., "Knock Feature Extraction in Spark Ignition Engines Using EEMD-Hilbert Transform," SAE Technical Paper 2016-01-0087, 2016, https://doi.org/10.4271/2016-01-0087.
Additional Details
Publisher
Published
Apr 5, 2016
Product Code
2016-01-0087
Content Type
Technical Paper
Language
English