Internal combustion engine lubricating oil condition monitoring based on vibro-acoustic measurements
The structure-borne acoustic signals were measured using an accelerometer mounted on the thrust side of the 1st cylinder and the airborne acoustic signals were recorded using a microphone placed 0.5 m away from the engine block facing the 1st cylinder and 1 m high from the floor. The signals are then band-pass filtered and transformed to the frequency domain, where the amplitudes of the frequency components of these signals are analysed and compared to the base-line signals. The mean amplitudes of the spectral components in the frequency band 1 kHz to 3 kHz were found directly proportional to the engine speed and load. It was also found that the RMS values of this frequency band are affected by the lubricating oil conditions. These results show that it is possible to use airborne acoustic signals to evaluate the quality of lubrication.
Document Type: Research Article
Affiliations: Design and Extreme Loading Research Group, School of Mechanical, Aerospace and Civil Engineering, The University of Manchester, Sackville Street, Manchester M160 1QD, UK. alhussein.albarbarmanchester.ac.uk
Publication date: December 1, 2007
- Official Journal of The British Institute of Non-Destructive Testing - includes original research and devlopment papers, technical and scientific reviews and case studies in the fields of NDT and CM.
- Information for Authors
- Submit a Paper
- Subscribe to this Title
- Information for Advertisers
- Terms & Conditions
- Ingenta Connect is not responsible for the content or availability of external websites