Estimating the Loading Condition of a Diesel Engine Using Instantaneous Angular Speed Analysis

Conference paper
Part of the Lecture Notes in Mechanical Engineering book series (LNME)

Abstract

Continuous monitoring of diesel engine performance is critical for early detection of fault developments in the engine before they materialize and become a functional failure. Instantaneous crank angular speed (IAS) analysis is one of a few non-intrusive condition monitoring techniques that can be utilized for such tasks. In this experimental study, IAS analysis was employed to estimate the loading condition of a 4-stroke 4-cylinder diesel engine in a laboratory condition. It was shown that IAS analysis can provide useful information about engine speed variation caused by the changing piston momentum and crankshaft acceleration during the engine combustion process. It was also found that the major order component of the IAS spectrum directly associated with the engine firing frequency (at twice the mean shaft revolution speed) can be utilized to estimate the engine loading condition regardless of whether the engine is operating at normal running conditions or in a simulated faulty injector case. The amplitude of this order component follows a clear exponential curve as the loading condition changes. A mathematical relationship was established for the estimation of the engine power output based on the amplitude of the major order component of the measured IAS spectrum.

Keywords

Combustion Torque Diesel Smoke 

Notes

Acknowledgments

This paper was developed within the CRC for Infrastructure and Engineering Asset Management, established and supported under the Australian Government’s Cooperative Research Centres Programme. The authors gratefully acknowledge the financial support provided by the CRC.

References

  1. 1.
    Feldman M, Seibold S (1999) Damage diagnosis of rotors: application of Hilbert transform and multihypothesis testing. J Vib Control 5:421–442CrossRefGoogle Scholar
  2. 2.
    Remond D (1998) Practical performances of high-speed measurement of gear transmission error or torsional vibrations with optical encoders. Meas Sci Technol 9:347–353CrossRefGoogle Scholar
  3. 3.
    Stander CJ, Heyns PS (2005) Instantaneous angular speed monitoring of gearboxes under non-cyclic stationary load conditions. Mech Syst Signal Process 19(4):817–835CrossRefGoogle Scholar
  4. 4.
    Du S, Randall RB (1998) Encoder error analysis in gear transmission error measurement. Proc Inst Mech Eng Part C: J Mech Eng Sci 212:277–285CrossRefGoogle Scholar
  5. 5.
    Sweeney PJ, Randall RB (1996) Gear transmission error measurement using phase demodulation. Proc Inst Mech Eng Part C: J Mech Eng Sci 210(3):201–213CrossRefGoogle Scholar
  6. 6.
    Yang J, Pu L, Wang Z, Zhou Y, Yan X (2001) Fault detection in a diesel engine by analysing the instantaneous angular speed. Mech Syst Signal Process 15(3):549–564CrossRefGoogle Scholar
  7. 7.
    Charles P, Sinha JK, Gu F, Lidstone L, Ball AD (2009) Detecting the crankshaft torsional vibration of diesel engines for combustion related diagnosis. J Sound Vib 321:1171–1185CrossRefGoogle Scholar
  8. 8.
    Taraza D, Henein NA, Bryzik W (2001) The frequency analysis of the crankshaft’s speed variation: a reliable tool for diesel engine diagnosis. Trans ASME J Eng Gas Turbines Power 123:428–432CrossRefGoogle Scholar
  9. 9.
    Douglas RM, Steel JA, Reuben RL, Fog TL (2006) On-line power estimation of large diesel engine using acoustic emission and instantaneous crankshaft angular velocity. Proc Inst Mech Eng Int J Eng Res 7:399–410Google Scholar
  10. 10.
    Sasi AYB, Gu F, Payne B, Ball A (2004) Instantaneous angular speed monitoring of electric motors. J Qual Maintenance Eng 10(2):123–135CrossRefGoogle Scholar
  11. 11.
    Renaudin L, Bonnardot F, Musy O, Doray JB, Remond D (1998) Natural roller bearing fault detection by angular measurement of true instantaneous angular speed. Meas Sci Technol 24:1998–2011Google Scholar
  12. 12.
    Li Y, Gu F, Harris G, Ball A, Bennett N, Travis K (2005) The measurement of instantaneous angular speed. Mech Syst Signal Process 19:786–805CrossRefGoogle Scholar
  13. 13.
    Gu F, Yesilyurt I, Li Y, Harris G, Ball A (2006) An investigation of the effects of measurement noise in the use of instantaneous angular speed for machine diagnosis. Mech Syst Signal Process 20:1444–1460CrossRefGoogle Scholar

Copyright information

© Springer-Verlag London 2014

Authors and Affiliations

  • T. R. Lin
    • 1
    • 2
  • A. C. C. Tan
    • 2
  • L. Ma
    • 1
    • 2
  • J. Mathew
    • 1
  1. 1.CRC for Infrastructure and Engineering Asset ManagementBrisbaneAustralia
  2. 2.School of Engineering SystemsQueensland University of TechnologyBrisbaneAustralia

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