B., B., Elmaihy, A., S., S., A., S., I., M. (2006). RECONSTRUCTION OF DIESEL EGINE CYLINDER PRESSURE USING VIBRATION AND ACOUSTIC EMISSION. test, 12(12th International Conference on Applied Mechanics and Mechanical Engineering.), 510-525. doi: 10.21608/amme.2006.41368
Badawi A. B.; A. Elmaihy; Samy A. S.; Shahin M. A.; Mohamed K. I.. "RECONSTRUCTION OF DIESEL EGINE CYLINDER PRESSURE USING VIBRATION AND ACOUSTIC EMISSION". test, 12, 12th International Conference on Applied Mechanics and Mechanical Engineering., 2006, 510-525. doi: 10.21608/amme.2006.41368
B., B., Elmaihy, A., S., S., A., S., I., M. (2006). 'RECONSTRUCTION OF DIESEL EGINE CYLINDER PRESSURE USING VIBRATION AND ACOUSTIC EMISSION', test, 12(12th International Conference on Applied Mechanics and Mechanical Engineering.), pp. 510-525. doi: 10.21608/amme.2006.41368
B., B., Elmaihy, A., S., S., A., S., I., M. RECONSTRUCTION OF DIESEL EGINE CYLINDER PRESSURE USING VIBRATION AND ACOUSTIC EMISSION. test, 2006; 12(12th International Conference on Applied Mechanics and Mechanical Engineering.): 510-525. doi: 10.21608/amme.2006.41368

RECONSTRUCTION OF DIESEL EGINE CYLINDER PRESSURE USING VIBRATION AND ACOUSTIC EMISSION

The International Conference on Applied Mechanics and Mechanical Engineering
Article 5, Volume 12, 12th International Conference on Applied Mechanics and Mechanical Engineering., May 2006, Pages 510-525    PDF (349.03 K)
Document Type: Original Article
DOI: 10.21608/amme.2006.41368
Authors
Badawi A. B.1; A. Elmaihy2; Samy A. S.2; Shahin M. A.3; Mohamed K. I.2
1PhD Postgraduate candidate, Dept. of Mech. Power and Energy, Military Technical Collage, Cairo, Egypt.
2Egyptian Armed Forces.
3Assistant Prof., Faculty of Engineering, Modern University of Engineering and Technology, Cairo, Egypt.
Abstract
ABSTRACT:
In this paper the diesel engine cylinder pressure is reconstruction in the crank angle domain using the measured engine vibration and acoustic emission. This technique depends on frequency analysis of engine vibration and acoustics. The frequency response functions (FRF′S) are determined from the measured cylinder pressure, engine vibration and acoustic emission at specified engine speed and loads. The cylinder pressure is reconstructed from the measured engine vibration and acoustics at similar conditions by applying the inverse filtering technique using the already determined FRF′S. The measured and the reconstructed cylinder pressures are compared to each other for vibration and acoustics at different loads. Comparison between the reconstructed cylinder pressure from acoustics and vibration signals at the similar speeds and loads with the measured ones show good results as they are predicated. Slight differences in results for measured and reconstructed cylinder pressure for both vibration and acoustics is due to non-linearity of the engine system. The measured and reconstructed cylinder pressures from vibration signal are compared to that ones from acoustics for similar conditions and they have the same results.   
Keywords
Cylinder pressure; Vibration; acoustics; frequency response function; fast fourier transform and inverse filtering
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