Volume 18, Issue No.3-4

KEY WORDS

Engine Noise; Vibrations; Condition Monitoring.

ABSTRACT

Injection process in diesel engines is a key to control engine performance parameters such as torque and power as well as to control noise and emissions from engine. Condition monitoring of injector is an important methodology for obtaining information about fuel injection process. However it is difficult to monitor the injector motion using air borne engine acoustic signals. In this work adaptive filtering has been used to study the injector impacts using condenser microphone located at a distance of 0.25 m from the engine rig on a array structure. The data obtained was filtered and processed in MATLAB 7 software. Various injection pressures were used and time frequency Wigner Ville Function was used to study the injector impacts.

CITATION INFORMATION

Acta Mechanica Slovaca. Volume 18, Issue 3-4, Pages 28–35, ISSN 1335-2393

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  Analysis of Combustion Noise in Diesel Engines

REFERENCES

[1] A. Parlak, H. Yasar, C. Hasimoglu, A. Kolip. The effects of Injection Timing on NOx Emissions of a Low Heat Rejection Indirect Diesel Injection Engine. Applied Thermal Engineering, Volume 25, 2005, 3042-3052.
[2] K. Purushothaman, G. Nagarajan Effect of Injection Pressure on Heat Release Rate and Emissions in CI Engine Using Orange Skin Powder Diesel Solution Energy Conversion and Management 2009. 50: p 962–969.
[3] F. Gu, A. D. Ball, Diesel Injector Dynamics and Estimation Injection Parameters from Impact Response. Part 1: Modelling and Analysis of Injector Impacts. Proc Institution of Mechanical Engineers. Proc. Inst. Mech. Eng., Part D (J. Automob. Eng.) 1995, Vol. 210, pp. 293-302.

[4] M. Ishihama, Improving Diesel Engine Noise and Vibration Assisted by Time Domain Subjective EvaluationTechnique, Kanagawa Institute of Technology, Atsugi, Japan.
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[6] S. Haykin, Adaptive Filter Theory. New Jersey: Prentice-Hall; 2002, ISBN 978-0-12-374538-5.

 

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