Knowledge of the pressure waveform in each cylinder of a spark-ignition engine may provide useful diagnostic information concerning engine operation. This paper presents a method for the reconstruction of the indicated pressure waveform for each cylinder of a multicylinder internal combustion engine using engine block vibration signals. The method permits the reconstruction of the cylinder pressure waveform, cycle by cycle, during free accelerations. The procedure has good potential for application in end-of-assembly diagnostic tests, using a noncontacting laser velocimeter. The same signal processing method may be applicable on-board an automobile to perform an on-line cylinder-by-cylinder diagnostics, using the same vibration sensor used for knock detection in many production vehicles.
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December 1997
Technical Papers
Reconstruction of Indicated Pressure Waveform in a Spark-Ignition Engine From Block Vibration Measurements
Piero Azzoni
Piero Azzoni
ENEA, C.R.E. Ezio Clementel, via don Fiammelli 2, 40129, Bologna, Italy
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Piero Azzoni
ENEA, C.R.E. Ezio Clementel, via don Fiammelli 2, 40129, Bologna, Italy
J. Dyn. Sys., Meas., Control. Dec 1997, 119(4): 614-619 (6 pages)
Published Online: December 1, 1997
Article history
Received:
May 13, 1994
Online:
December 3, 2007
Citation
Azzoni, P. (December 1, 1997). "Reconstruction of Indicated Pressure Waveform in a Spark-Ignition Engine From Block Vibration Measurements." ASME. J. Dyn. Sys., Meas., Control. December 1997; 119(4): 614–619. https://doi.org/10.1115/1.2802369
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