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TECHNICAL PAPERS: Internal Combustion Engines

Engine Torque Nonuniformity Evaluation Using Instantaneous Crankshaft Speed Signal

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

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

J. Eng. Gas Turbines Power 125(4), 1050-1058 (Nov 18, 2003) (9 pages) doi:10.1115/1.1581892 History: Received October 01, 2001; Revised December 01, 2002; Online November 18, 2003
Copyright © 2003 by ASME
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References

California Air Resources Board, 1991, “Technical Status Update and Proposed Revisions to Malfunction and Diagnostic System Requirements Applicable to 1994 and Subsequent California Passenger Cars, Light-Duty Trucks, and Medium-Duty Vehicles—(OBD II),” CARB Staff Report.
Forster, J., Lohmann, A., Mezger, M., and Ries-Muller, K., 1997, “Advanced Engine Misfire Detection for SI-Engines,” SAE Technical Paper 970855.
Klenk, M., Moser, W., Muller, W., and Wimmer, W., 1993, “Misfire Detection by Evaluating Crankshaft Speed—A Means to Comply With OBD II,” SAE Paper 930399.
Plapp, G., Klenk, M., and Moser, W., 1990, “Methods of On-Board Misfire Detection,” SAE Technical Paper 900232.
Azzoni, P. M., Moro, D., Porceddu-Cilione, C. M., and Rizzoni, G., 1996, “Misfire Detection in a High Performance Engine by the Principal Components Analysis Approach,” SAE Technical Paper 960622.
Azzoni, P. M., Cantoni, G., Ceccarani, M., Mazzetti, S., Minelli, G., Moro, D., and Rizzoni, G., 1995, “Measurement of Engine Misfire in a Lamborghini V-12 Engine Using Crankshaft Speed Fluctuations,” SAE Technical Paper 950837.
Azzoni, P. M., Minelli, G., and Moro, D., 1998, “Misfire Pattern Recognition in High Performance SI 12 Cylinder Engine,” SAE Technical Paper 980521.
Cavina, N., Ponti, F., and Rizzoni, G., 1999, “Fast Algorithm for On-Board Torque Estimation,” SAE Technical Paper 1999-01-0541.
Azzoni, P., Moro, D., Ponti, F., and Rizzoni, G., 1998, “Engine and Load Torque Estimation With Application to Electronic Throttle Control,” SAE Technical Paper 980795.
Citron, S. J., O’Higgins, J. E., and Chen, L. Y., 1989, “Cylinder by Cylinder Engine Pressure and Pressure Torque Waveform Determination Utilizing Speed Fluctuations,” SAE Technical Paper 890486.
Moro, D., Ponti, F., and Cavina, N., 1999, “In-Cylinder Pressure Reconstruction Based on Instantaneous Engine Speed Signal,” Proceedings of ICE Division, Oct. 16–20, 1999, Ann Arbor, MI, ASME, New York.
Letenturier, P., and Benning, J., 1999, “Enhanced Engine Position Acquisition and Treatment,” SAE Technical Paper 1999-01-0203.
Heywood, J. B., 1988, Internal Combustion Engine Fundamentals, McGraw-Hill, New York.
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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Engine-brake dynamic model
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Engine speed waveform for an accidental misfire in cylinder 4 of a V6 engine running in a test cell at 3000 rpm
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Indicated torque mean value evaluation over different integration intervals for a V6 engine with cylinder 4 misfiring at the beginning of the second engine cycle
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Intervals investigated for optimal MD evaluation
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Engine speed evaluation before and after Interval 2
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Engine speed values to be used for MDi evaluation over Intervals 1 and 2
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Example of the Virtual ECU actuation signals to generate a misfire
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Steady-state operating conditions investigated to determine the misfire detection threshold map
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MD evaluation for the test at 4000 rpm engine speed and 160 Nm load torque (larger dots represent the induced misfires)
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MD evaluation for the test at 4000 rpm and 160 Nm in the vicinity of a misfire event
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MD waveform after a misfire for the test at 4000 rpm engine speed and 160 Nm load torque
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MD evaluation for the test at 4000 rpm and 160 Nm in the vicinity of a misfire event, after the torsional vibration effects have been filtered away
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MD evaluation for the test at 1150 rpm engine speed and 24 Nm load torque (larger dots represent the induced misfires)
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MD and indicated torque values in cylinder #4 for the test at 1150 rpm and 24 Nm
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MD versus indicated torque values in cylinder #4 for the test at 1150 rpm and 24 Nm
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MD and indicated torque values in cylinder #6 for the test at 1150 rpm and 24 Nm
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MD versus indicated torque values in cylinder #6 for the test at 1150 rpm and 24 Nm
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MD evaluation for transient test #1 compared to the mapped threshold value (larger dots are the induced misfires)
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MD evaluation for transient test #2 compared to the mapped threshold value (larger dots are the induced misfires)
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Engine speed and load torque trends during transient test #1
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Engine speed and load torque trends during transient test #2
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Steady-state tests performed on the 1.2 liters L4 engine
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Difference between the MD evaluated for cylinder #1 and #4, versus difference between the indicated torque developed in the same cylinders

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