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Automotive Diesel Engine Performance and Condition Monitoring using Downpipe Acoustic Waveform Analysis

By Xiang Jiang, Fengshou Gu and Andrew Ball


It would seem logical that acoustic signals measured from within a diesel engine’s exhaust pipe would contain useful information for engine monitoring. Preliminary experimental results, however, are found to be influenced significantly by changes in sensor positions and silencer configurations due to acoustic reflections inside the exhaust pipe. In order to suppress the contamination of reflection, this paper develops an effective acoustic method using two sensors mounted along the exhaust pipe. In addition to simulation modelling and theoretical study, experimental investigations are conducted to verify the reliability of this method. The experimental results show that using peak and shape indices of the incident waveforms, derived from measurements of the two sensors, accurate and reliable detection and diagnosis results are obtained for a range of realistic incipient faults under different operating conditions

Topics: TA, TL
Year: 2008
OAI identifier:

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  10. (2000). Evaluation through pressure and mass velocity distribution of the linear acoustical description of I.C. engine exhaust systems. doi
  11. (2001). Exhaust pressure signal for automotive engine diagnosis.
  12. (2001). Failure detection using turbocharger instantaneous Speed frequency analysis on reciprocating internal combustion engines.
  13. (1988). Internal combustion engine fundamentals.
  14. (2005). Prediction of source characteristics of engine exhaust manifolds. doi
  15. (1993). Review of some recent advances in the condition monitoring of small to medium sized diesel engines.
  16. (1994). Review of theoretical and experimental aspects of acoustical modelling of engine exhaust systems, doi
  17. (1994). Simple analysis of exhaust noise produced by a four cylinder engine. doi
  18. (2001). Simulation of a single cylinder diesel engine under cold start conditions using Simulink. doi
  19. (1983). Studies of acoustical performance of a multi-cylinder engine exhaust muffler system. doi
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