Study on the Relationship between Combustion Parameters and Cylinder Head Vibration Signal in Time Domain

Shaobo Ji, Yang Li, Guohong Tian, Rongze Ma, Minglei Shu, Shiqiang Zhang, Wenbin Yu, Xin Lan and Yong Cheng
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Shaobo Ji: College of Energy and Power Engineering, Shandong University, Jinan 250061, China
Yang Li: College of Energy and Power Engineering, Shandong University, Jinan 250061, China
Guohong Tian: Department of Mechanical Engineering Sciences, University of Surrey, Guildford GU27XH, UK
Rongze Ma: College of Energy and Power Engineering, Shandong University, Jinan 250061, China
Minglei Shu: Shandong Computer Science Centre (National Supercomputer Centre in Jinan), Shandong Artificial Intelligence Institute, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250013, China
Shiqiang Zhang: College of Energy and Power Engineering, Shandong University, Jinan 250061, China
Wenbin Yu: College of Energy and Power Engineering, Shandong University, Jinan 250061, China
Xin Lan: College of Energy and Power Engineering, Shandong University, Jinan 250061, China
Yong Cheng: College of Energy and Power Engineering, Shandong University, Jinan 250061, China

Energies, 2021, vol. 14, issue 19, 1-16

Abstract: Combustion-related characteristic parameters, such as the start of combustion (SoC) and the timing of the peak pressure increase rate (PIR), can be used as the feedback signals for the closed-loop control of combustion. A dynamic Finite Element Method (FEM) model was firstly developed to confirm the closely related time period between combustion pressure and vibration. On this basis, a fast processing method was developed to estimate the timings of SoC and the peak PIR in the closely related time period. This method was verified on a twelve-cylinder heavy-duty diesel engine at various engine speed and load. Results showed that the maximum deviation of the two parameters were within 2 °CA and 1.5 °CA, respectively, which suggested that the proposed method had an adequate accuracy.

Keywords: combustion pressure; vibration signal; FEM analysis; combustion information estimation (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
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