Non-Harmonic Radiation Noise Source Identification of Engines Based on the Cepstrum Analysis and Analytic Hierarchy Process 2013-01-1975
This paper presents a method to identify the radiation noise source of diesel engine based on a Cepstrum Analysis (CA) and Analytic Hierarchy Process (AHP). Through measuring noise and surface vibrations of a diesel engine, cepstrum analysis is applied to the measured signals. In an investigation of the radiation noise source, the hierarchy tree and judgment matrix are given. Through identification, the main noise source is found. The results show that the left body contributes maximally to non-harmonic spectral characteristics of noise. Therefore, in order to reduce engine vibration and noise effectively, we should optimize and improve left body. In addition, optimizing and improving gear chamber casing, oil pan, inlet pan and valve chamber cover can decrease harmonic vibration and noise of engine.
Citation: Liang, X., "Non-Harmonic Radiation Noise Source Identification of Engines Based on the Cepstrum Analysis and Analytic Hierarchy Process," SAE Technical Paper 2013-01-1975, 2013, https://doi.org/10.4271/2013-01-1975. Download Citation
Author(s):
Xingyu Liang
Affiliated:
Tianjin Univ.
Pages: 11
Event:
SAE 2013 Noise and Vibration Conference and Exhibition
ISSN:
0148-7191
e-ISSN:
2688-3627
Related Topics:
Diesel / compression ignition engines
Radiation
Noise
Vibration
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