Browse > Article

Quantification of Thermal Shock in a Piezoelectric Pressure Transducer  

Lee, Seok-Hwan (Department of Mechanical Engineering, KAIST)
Choi, Wook (Department of Mechanical Engineering, KAIST)
Bae, Choong-Sik (Department of Mechanical Engineering, KAIST)
Publication Information
Transactions of the Korean Society of Automotive Engineers / v.13, no.5, 2005 , pp. 96-103 More about this Journal
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.
Keywords
Piezoelectric pressure transducer; IC engine; Thermal shock; Diaphragm; Error compensation;
Citations & Related Records
연도 인용수 순위
  • Reference
1 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
2 A. L. Randolph, 'Cylinder-Pressure-Transducer Mounting Techniques to Maximize Data Accuracy,' SAE 900171, 1990
3 R. H. Kuratle and B. Marki, 'Influencing Parameters and Error Sources During Indication on Internal Combustion Engines,' SAE 920233, 1992
4 W. L. Brown, 'Methods for Evaluating Requirements and Errors in Cylinder Pressure Measurement,' SAE 670008, 1967
5 R. A. Stein, D. Z. Mencik and C. C. Warren, 'Effect of Thermal Strain on Measurement of Cylinder Pressure,' SAE 870455, 1987
6 A. Higumi, T. Suzuki, M. Yoshida and Y. Oguri, 'Improvement of Error in Piezoelectric Pressure Transducer,' SAE 1999-01-0207, 1999
7 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
8 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
9 H. J. Schafer, 'Thermal Stress on a Piezoelectric Pressure Transducer in the Combustion Chamber of an SI Engine,' SAE 850374, 1985
10 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