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Analysis of noise occurrence by cavitation in the main bearing of diesel engine

✍ Scribed by Takayuki Aoyama; Atsushi Kawamoto; Takashi Noda; Toshihiro Ozasa; Takeyuki Kato; Yoshiyuki Murai; Takashi Ito

Publisher
Elsevier Science
Year
2003
Tongue
English
Weight
505 KB
Volume
24
Category
Article
ISSN
0389-4304

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✦ Synopsis

This paper presents an analysis of noise occurrence at the 7th main bearing of an inline six cylinder diesel engine. From experimental results of the engine, it seems that cavitation in the bearing oil film is a major factor for this noise, and the noise occurs with a combination of the following conditions; (1) cavitation exists in oil film at the main bearing, (2) main journal is unstable and (3) excitation force acts at this moment. This assumption is analyzed using engine vibration analysis, EHL analysis and stability analysis. The results agree with the condition of the noise occurrence.

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