Knock Detection in Spark Ignition Engines Base on Complementary Ensemble Empirical Mode Decomposition-Hilbert Transform
Joint Authors
Bi, Fengrong
Ma, Teng
Zhang, Jian
Li, Lin
Shi, Chunfang
Source
Issue
Vol. 2016, Issue 2016 (31 Dec. 2016), pp.1-17, 17 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2016-03-03
Country of Publication
Egypt
No. of Pages
17
Main Subjects
Abstract EN
In spark ignition engines, knock onset limits the maximum spark advance.
An inaccurate identification of this limit penalises the fuel conversion efficiency.
Thus knock feature extraction is the key of closed-loop control of ignition in spark ignition engine.
This paper reports an investigation of knock detection in spark ignition (SI) engines using CEEMD-Hilbert transform based on the engine cylinder pressure signals and engine cylinder block vibration signals.
Complementary Ensemble Empirical Mode Decomposition (CEEMD) was used to decompose the signal and detect knock characteristic.
Hilbert transform was used to analyze the frequency information of knock characteristic.
The result shows that, for both of cylinder pressure signals and vibration signals, the CEEMD algorithm could extract the knock characteristic, and the Hilbert transform result shows that the energy of knock impact areas has the phenomenon of frequency concentration in both cylinder pressure signal and cylinder block vibration signal.
At last, the knock window is then determined, based on which a new knock intensity evaluation factor K is propose, and it can accurately distinguish between heavy knock, light knock, and normal combustion three states.
American Psychological Association (APA)
Bi, Fengrong& Ma, Teng& Zhang, Jian& Li, Lin& Shi, Chunfang. 2016. Knock Detection in Spark Ignition Engines Base on Complementary Ensemble Empirical Mode Decomposition-Hilbert Transform. Shock and Vibration،Vol. 2016, no. 2016, pp.1-17.
https://search.emarefa.net/detail/BIM-1120113
Modern Language Association (MLA)
Bi, Fengrong…[et al.]. Knock Detection in Spark Ignition Engines Base on Complementary Ensemble Empirical Mode Decomposition-Hilbert Transform. Shock and Vibration No. 2016 (2016), pp.1-17.
https://search.emarefa.net/detail/BIM-1120113
American Medical Association (AMA)
Bi, Fengrong& Ma, Teng& Zhang, Jian& Li, Lin& Shi, Chunfang. Knock Detection in Spark Ignition Engines Base on Complementary Ensemble Empirical Mode Decomposition-Hilbert Transform. Shock and Vibration. 2016. Vol. 2016, no. 2016, pp.1-17.
https://search.emarefa.net/detail/BIM-1120113
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1120113