Transactions of the Korean Society of Automotive Engineers (한국자동차공학회논문집)

The Korean Society of Automotive Engineers (한국자동차공학회)
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Quantification of Thermal Shock in a Piezoelectric Pressure Transducer

압전식 압력센서에서 발생하는 열충격 효과 정량화

  • Published : 2005.09.01
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Abstract

One of the major problems limiting the accuracy of piezoelectric transducers fur cylinder pressure measurements in an internal combustion (IC) engine is the thermal shock. Thermal shock is generated from the temperature variation during the cycle. This temperature variation results in contraction and expansion of the diaphragm and consequently changes the force acting on the quartz in the pressure transducer An empirical equation for compensation of the thermal shock error was derived from consideration of the diaphragm thermal deformation and actual pressure data. The result indicate that the thermal shock equation provides reliable correction based on known surface temperature swing.

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References

  1. R. H. Kuratle and B. Marki, 'Influencing Parameters and Error Sources During Indication on Internal Combustion Engines,' SAE 920233, 1992
  2. P. V. Puzinaukas, J. C. Eves and N. F. Tillman, 'Measureing Absolute-Cylinder Pressure and Pressure Drop Across Intake Values of Firing Engines,' SAE 941881, 1994
  3. H. S. Rai, M. F. J. Brunt and C. P. Loader, 'Quantification and Reduction of IMEP Errors Resulting from Pressure Transducer Thermal Shock in an S.I. Engine,' SAE 1999-01-1329, 1999
  4. A. L. Randolph, 'Cylinder-Pressure-Transducer Mounting Techniques to Maximize Data Accuracy,' SAE 900171, 1990
  5. R. A. Stein, D. Z. Mencik and C. C. Warren, 'Effect of Thermal Strain on Measurement of Cylinder Pressure,' SAE 870455, 1987
  6. W. L. Brown, 'Methods for Evaluating Requirements and Errors in Cylinder Pressure Measurement,' SAE 670008, 1967
  7. A. Higumi, T. Suzuki, M. Yoshida and Y. Oguri, 'Improvement of Error in Piezoelectric Pressure Transducer,' SAE 1999-01-0207, 1999
  8. H. J. Schafer, 'Thermal Stress on a Piezoelectric Pressure Transducer in the Combustion Chamber of an SI Engine,' SAE 850374, 1985
  9. P. V. Puzinauskas, W. M. Mathis and M. A. Dzieciuch, 'Quantification and Modeling the Effects of Thermal Shock on Combustion Pressure Transducers,' SAE 2001-01-3491, 2001
  10. S. H. Lee and C. S. Bae, 'Quantification the Effects of Thermal Shock in Piezoelectric Pressure Transducer,' Fall Conference Proceedings, Vol.II, KSAE, pp.378-383, 2004