This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Knock Analysis in the Crank Angle Domain for Low-Knocking Cycles Detection
Technical Paper
2020-01-0549
ISSN: 0148-7191, e-ISSN: 2688-3627
This content contains downloadable datasets
Annotation ability available
Sector:
Language:
English
Abstract
Knock is an abnormal phenomenon with in-cylinder pressure oscillations, which must be avoided to protect the engine from damage and to avoid excessive noise. Conventional control algorithms delay the combustion with the spark to avoid high knocking rates but reduce the thermal efficiency and restricts the performance of a spark ignition engine. The detection and characterization of low-knocking cycles might be used for improving knock control algorithms, however, it is a challenging task, as normal combustion also excite the different resonance modes and might be confused with knock.
Most of the methods found in literature for knock detection use 0-Dimensional indicators, regardless of the angular evolution of the pressure oscillations. In this paper, the in-cylinder pressure oscillations evolution during the piston stroke is analyzed by using various time-frequency transformations. The analysis highlights the need of a new criteria for knock detection, which must take into account the intensity of the oscillations but also the crank angle location where they take place. A new definition of knock is proposed by using resonance to design an indicator of the pressure resonance evolution and by assuming constant volume combustion at knock to determine the minimum oscillation required for end-gas auto ignition detection as a function of the crank angle location. Several experimental tests with an EURO VI SI engine are used for illustration and validation purposes. A conventional knock control algorithm was used for comparing the new knock event definition with the classical MAPO definition, being the new indicator able to improve the performance of the controllers by giving more information about knock and introducing lower spark advance (SA) variability.
Authors
Citation
Pla, B., De La Morena, J., Bares, P., and Jiménez, I., "Knock Analysis in the Crank Angle Domain for Low-Knocking Cycles Detection," SAE Technical Paper 2020-01-0549, 2020, https://doi.org/10.4271/2020-01-0549.Data Sets - Support Documents
| Title | Description | Download |
|---|---|---|
| Unnamed Dataset 1 | ||
| Unnamed Dataset 2 | ||
| Unnamed Dataset 3 | ||
| Unnamed Dataset 4 |
Also In
References
- Zhen , X. , Wang , Y. , Xu , S. , Zhu , Y. et al. The Engine Knock Analysis-An Overview Applied Energy 92 628 636 2012
- Wang , Z. , Liu , H. , and Reitz , R.D. Knocking Combustion in Spark-Ignition Engines Progress in Energy and Combustion Science 61 78 112 2017
- Heywood , J.B. Internal Combustion Engine Fundamentals McGraw-Hill, Inc. 1988
- Bi , F. , Ma , T. , and Wang , X. Development of a Novel Knock Characteristic Detection Method for Gasoline Engines Based on Wavelet-Denoising and EMD Decomposition Mechanical Systems and Signal Processing 117 517 536 2019
- Shen , X. and Shen , T. Real-Time Statistical Learning-Based Stochastic Knock Limit Control for Spark-Ignition Engines Applied Thermal Engineering 127 1518 1529 2017
- Parra , A.F.S. and Torres , A.G.D. Improvement of a Knock Model for Natural Gas SI Engines through Heat Transfer Evaluation International Journal on Interactive Design and Manufacturing (IJIDeM) 12 4 1423 1433 2018
- Wang , Z. , Liu , H. , and Reitz , R.D. Knocking Combustion in Spark-Ignition Engines Progress in Energy and Combustion Science 61 78 112 2017
- Galloni , E. Knock-Limited Spark Angle Setting by Means of Statistical or Dynamic Pressure Based Methods Energy Conversion and Management 116 11 17 2016
- Shu , G. , Pan , J. , and Wei , H. Analysis of Onset and Severity of Knock in SI Engine Based on In-Cylinder Pressure Oscillations Applied Thermal Engineering 51 1-2 1297 1306 2013
- Brecq , G. , Bellettre , J. , and Tazerout , M. A New Indicator for Knock Detection in Gas SI Engines International Journal of Thermal Sciences 42 5 523 532 2003
- Galloni , E. Dynamic Knock Detection and Quantification in a Spark Ignition Engine by Means of a Pressure Based Method Energy Conversion and Management 64 256 262 2012
- Parra , A.F.S. and Torres , A.G.D. Improvement of a Knock Model for Natural Gas SI Engines through Heat Transfer Evaluation International Journal on Interactive Design and Manufacturing (IJIDeM ) 12 4 1423 1433 2018
- Gerardin , R.C. , Alves , M.A.F. , and de França Arruda , J.R. Analysis of Spark Ignition Engine Knock Signals Using Fourier and Discrete Wavelet Transform SAE Technical Paper 2009-36-0312 2009 https://doi.org/10.4271/2009-36-0312
- Park , S.T. and Yang , J. Engine Knock Detection Based on Wavelet Transform Proceedings, The 8th Russian-Korean International Symposium on Science and Technology, 2004. KORUS 2004 3 80 83 2004
- Akimoto , K. , Komatsu , H. , and Kurauchi , A. Development of Pattern Recognition Knock Detection System Using Short-Time Fourier Transform IFAC Proceedings Volumes 46 21 366 371 2013
- Bares , P. , Selmanaj , D. , Guardiola , C. , and Onder , C. A New Knock Event Definition for Knock Detection and Control Optimization Applied Thermal Engineering 131 80 88 2018
- Guardiola , C. , Pla , B. , Bares , P. , and Barbier , A. An Analysis of the In-Cylinder Pressure Resonance Excitation in Internal Combustion Engines Applied Energy 228 1272 1279
- Zhao , K. and Shen , T. Normal-Gamma Distribution-Based Stochastic Knock Probability Control Scheme for Spark-Ignition Engines Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 2019
- Bares , P. , Selmanaj , D. , Guardiola , C. , and Onder , C. Knock Probability Estimation through an In-Cylinder Temperature Model with Exogenous Noise Mechanical Systems and Signal Processing 98 756 769 2018
- Draper , C.S. Pressure Waves Accompanying Detonation in the Internal Combustion Engine Journal of the Aeronautical Sciences 5 6 219 226 1938 2018
- Lapuerta , M. , Armas , O. , and Hernandez , J. Diagnosis of DI Diesel Combustion from in-Cylinder Pressure Signal by Estimation of Mean Thermodynamic Properties of the Gas Applied Thermal Engineering 19 5 513 529 1999
- Shen , X. , Zhang , Y. , and Shen , T. Cylinder Pressure Resonant Frequency Cyclic Estimation-Based Knock Intensity Metric in Combustion Engines Applied Thermal Engineering 158 113756 2019
- McKenzie , J. and Cheng , W.K. The Anatomy of Knock SAE Technical Paper 2016-01-0704 2016 https://doi.org/10.4271/2016-01-0704