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TECHNICAL PAPERS: Internal Combustion Engines

In-Cylinder Pressure Reconstruction Based on Instantaneous Engine Speed Signal

[+] Author and Article Information
D. Moro, N. Cavina, F. Ponti

University of Bologna, Viale Risorgimento 2, Bologna 40136, Italy

J. Eng. Gas Turbines Power 124(1), 220-225 (Mar 01, 2001) (6 pages) doi:10.1115/1.1391430 History: Received September 01, 2000; Revised March 01, 2001
Copyright © 2002 by ASME
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References

Azzoni, P., Moro, D., Ponti, F., and Rizzoni, G., “Engine and Load Torque Estimation with Application to Electronic Throttle Control,” SAE Technical Paper No. 980795.
Citron, S. J., O’Higgins, J. E., and Chen, L. Y., “Cylinder by Cylinder Engine Pressure and Pressure Torque Waveform Determination Utilizing Speed Fluctuations,” SAE Technical Paper No. 890486.
Kao,  M., and Moskwa,  J. J., 1995, “Nonlinear Diesel Engine Control and Cylinder Pressure Estimation,” ASME J. Dyn. Syst., Meas., Control, 117, No. 2.
Shiao, Y., and Moskwa, J. J., “Misfire Detection and Cylinder Pressure Reconstruction for SI Engines,” SAE Technical Paper No. 940144.
Cavina, N., Ponti, F., and Rizzoni, G., “Fast Algorithm for On-Board Torque Estimation,” SAE Technical Paper No. 1999-01-0541.
Wakuri, Y., Soejima, M., Ejima, Y., Hamatake, T., and Kitahara, T., “Studies on Friction Characteristics of Reciprocating Engines,” SAE Technical Paper No. 952471.
Arsie, I., Pianese, C., Rizzo, G., Flora, R., and Serra, G., “Development and Validation of a Model for Mechanical Efficiency in a Spark Ignition Engine,” SAE Technical Paper 1999-01-0905.
Gassenfeit, E. H., and Powell, J. D., “Algorithms for Air-Fuel Ratio Estimation Using Internal Combustion Engine Cylinder Pressure,” SAE Technical Paper No. 890300.
Randolph, A., “Methods of Processing Cylinder-Pressure Transducer Signals to Maximize Data Accuracy,” Paper No. SAE 900170.
Moskwa, J., Wang, W., and Bucheger, D. J., 1998, “A New Methodology for Engine Diagnostics and Control Utilizing “Synthetic” Engine Variables: Theoretical and Experimental Results, Proceedings of the ASME, Dynamic Systems and Control Division, DSC-Vol. 64, ASME, New York.

Figures

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In-cylinder pressure with and without combustion and “combustion pressure” when the engine is running at 2000 rpm at full load
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Pressure and indicated torque waveforms in a cycle for a single cylinder
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Instantaneous indicated torque waveforms in a cycle in the four cylinder engine under study
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Instantaneous reciprocating mass inertial torque waveforms in a cycle in the four-cylinder engine under study at 2000, 3000, and 4000 rpm
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Measured and “synthetic” engine speed at 4000 rpm and full load, for the four-cylinder in-line engine under study
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Three-dimensional surface of the in-cylinder pressure when the intake valve is closing
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In-cylinder pressure and pressure without combustion when the engine is running at 3000 rpm at full load
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“Synthetic” engine speed with normal combustion and misfire when the engine is running at 3000 rpm at full load
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“Combustion pressure” and the difference between the actual “synthetic” engine speed and the synthetic speed in case of misfire when the engine is running at 3000 rpm at full load
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Coherence function between the “combustion pressure” waveform and the difference between the actual “synthetic” engine speed and the one in case of misfire
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Intake manifold pressure versus engine speed plane
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Pressure recovery related to the point A in Fig. 11
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Pressure recovery related to the point B in Fig. 11
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Pressure recovery related to the point C in Fig. 11
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Pressure recovery related to a steady-state test in presence of a misfire at partial load

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