A Knock Detection Method for a Marine Micro-Ignition Dual-Fuel Engine Based on Vibration Signals
A simple and unified index is proposed to achieve knock detection under various engine loads. Maximum amplitude vibration oscillation (MAVO) and maximum amplitude pressure oscillation (MAPO) were compared and were found to have no consistency. This means that MAVO cannot accurately reflect knocks in...
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| Format: | Article |
| Language: | English |
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Sciendo
2025-03-01
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| Series: | Polish Maritime Research |
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| Online Access: | https://doi.org/10.2478/pomr-2025-0011 |
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| author | Hu Nao Zhao He Yang Jianguo Zheng Xianquan Li Hongmei Xie Liangtao Liu Fuze Chen Gang |
| author_facet | Hu Nao Zhao He Yang Jianguo Zheng Xianquan Li Hongmei Xie Liangtao Liu Fuze Chen Gang |
| author_sort | Hu Nao |
| collection | DOAJ |
| description | A simple and unified index is proposed to achieve knock detection under various engine loads. Maximum amplitude vibration oscillation (MAVO) and maximum amplitude pressure oscillation (MAPO) were compared and were found to have no consistency. This means that MAVO cannot accurately reflect knocks inside the engine cylinder in the time domain. However, a knocking index built with MAVO can effectively detect engine knocking under various engine loads, which implies that some important information connected to the knock may be hidden within it. In this circumstance, a frequency domain analysis and a wavelet transform were conducted to study the energy changes of vibration signals during engine knocking. The energy proportion of the D1 frequency band during knocking increased drastically. Therefore, it was used to build a knocking judgment index, which builds the relationship between MAVO and MAPO. The judgment index has good applicability under different engine loads and a value greater than 0.5 can be used effectively for knock detection. |
| format | Article |
| id | doaj-art-c3bfa300cb3549f8aead85d142d03ba2 |
| institution | DOAJ |
| issn | 2083-7429 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | Sciendo |
| record_format | Article |
| series | Polish Maritime Research |
| spelling | doaj-art-c3bfa300cb3549f8aead85d142d03ba22025-08-20T02:58:29ZengSciendoPolish Maritime Research2083-74292025-03-0132111112010.2478/pomr-2025-0011A Knock Detection Method for a Marine Micro-Ignition Dual-Fuel Engine Based on Vibration SignalsHu Nao0Zhao He1Yang Jianguo2Zheng Xianquan3Li Hongmei4Xie Liangtao5Liu Fuze6Chen Gang7School of Naval Architecture, Ocean and Energy Power Engineering, Wuhan University of Technology, Wuhan, ChinaSchool of Naval Architecture, Ocean and Energy Power Engineering, Wuhan University of Technology, Wuhan, ChinaSchool of Naval Architecture, Ocean and Energy Power Engineering, Wuhan University of Technology, Wuhan, ChinaCollege of Power Engineering, Naval University of Engineering, Wuhan, ChinaKey Laboratory for Power Machinery and Engineering, Ministry of Education, Shanghai Jiao Tong University, Shanghai, ChinaSchool of Naval Architecture, Ocean and Energy Power Engineering, Wuhan University of Technology, Wuhan, ChinaSchool of Naval Architecture, Ocean and Energy Power Engineering, Wuhan University of Technology, Wuhan, ChinaSchool of Naval Architecture, Ocean and Energy Power Engineering, Wuhan University of Technology, Wuhan, ChinaA simple and unified index is proposed to achieve knock detection under various engine loads. Maximum amplitude vibration oscillation (MAVO) and maximum amplitude pressure oscillation (MAPO) were compared and were found to have no consistency. This means that MAVO cannot accurately reflect knocks inside the engine cylinder in the time domain. However, a knocking index built with MAVO can effectively detect engine knocking under various engine loads, which implies that some important information connected to the knock may be hidden within it. In this circumstance, a frequency domain analysis and a wavelet transform were conducted to study the energy changes of vibration signals during engine knocking. The energy proportion of the D1 frequency band during knocking increased drastically. Therefore, it was used to build a knocking judgment index, which builds the relationship between MAVO and MAPO. The judgment index has good applicability under different engine loads and a value greater than 0.5 can be used effectively for knock detection.https://doi.org/10.2478/pomr-2025-0011knock detectionvibration signalwavelet transformenergy proportionunified knock detection index |
| spellingShingle | Hu Nao Zhao He Yang Jianguo Zheng Xianquan Li Hongmei Xie Liangtao Liu Fuze Chen Gang A Knock Detection Method for a Marine Micro-Ignition Dual-Fuel Engine Based on Vibration Signals Polish Maritime Research knock detection vibration signal wavelet transform energy proportion unified knock detection index |
| title | A Knock Detection Method for a Marine Micro-Ignition Dual-Fuel Engine Based on Vibration Signals |
| title_full | A Knock Detection Method for a Marine Micro-Ignition Dual-Fuel Engine Based on Vibration Signals |
| title_fullStr | A Knock Detection Method for a Marine Micro-Ignition Dual-Fuel Engine Based on Vibration Signals |
| title_full_unstemmed | A Knock Detection Method for a Marine Micro-Ignition Dual-Fuel Engine Based on Vibration Signals |
| title_short | A Knock Detection Method for a Marine Micro-Ignition Dual-Fuel Engine Based on Vibration Signals |
| title_sort | knock detection method for a marine micro ignition dual fuel engine based on vibration signals |
| topic | knock detection vibration signal wavelet transform energy proportion unified knock detection index |
| url | https://doi.org/10.2478/pomr-2025-0011 |
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