| LI Zhijie (李志杰)*,WANG Yonglai*,CHEN Cuicui*,ZHOU Long*,WANG Yao**,YUAN Shaoshe**.[J].高技术通讯(英文),2025,31(1):12~19 |
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| Research on the life prediction of vehicle engine cylinder head driven by dual channel Markov chain |
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| DOI：10. 3772 / j. issn. 1006-6748. 2025. 01. 002 |
| 中文关键词: |
| 英文关键词: engine cylinder head, driving cycle, vehicle networking, life prediction |
| 基金项目: |
| Author Name | Affiliation | | LI Zhijie (李志杰)* | (*National Key Laboratory of Internal Combustion Engines and Power Systems, Weichai Power Co. ,Ltd. , Weifang 261061, P. R. China)
(**Key Laboratory of Engine Health Monitoring-control and Networking, Ministry of Education, Beijing University of Chemical Technology, Beijing 100029, P. R. China) | | WANG Yonglai* | | | CHEN Cuicui* | | | ZHOU Long* | | | WANG Yao** | | | YUAN Shaoshe** | |
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| 中文摘要: |
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| 英文摘要: |
| The performance degradation of vehicle engine cylinder heads is a complex phenomenon, and the accurate prediction of their remaining useful life is essential for maintenance planning. To address the problem of low prediction accuracy caused by insufficient data mining depth in current prediction models for the remaining service life of engine cylinder heads, a prediction method of dualchannel model is proposed. Firstly, the driving status data of multiple vehicles is summarized and analyzed, and the on-board network common variables related to cylinder head life are screened.Secondly, driving segments are defined, the driving state features of each driving segment are extracted, and feature correlation analysis and principal component analysis are performed. All driving state profiles of the vehicle are divided using the clustering algorithm, and the cumulative degradation factors for driving state profiles are defined and calculated. Furthermore, the mileage of each driving segment is classified into intervals by applying fuzzy set theory, and the state transfer probability matrices of driving state profiles and driving segment mileage are calculated. A new engine head life prediction model based on dual channel Markov chain (DCMC) is established. Finally,the proposed method is applied to the residual life prediction of cylinder head of seven actual vehicles, and the comparison with actual life statistics results proved the validity of the proposed method. |
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