Real-time misfire detection for automobile engines with medium d

Data processing: vehicles – navigation – and relative location – Vehicle control – guidance – operation – or indication – With indicator or control of power plant

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F02D 4100

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active

058625070

ABSTRACT:
A method and system for detecting engine misfire in an internal combustion engine. A data signal containing a plurality of groups of data points generated from sampling crankshaft rotational displacement over three predetermined angular sampling windows is generated. Each of the plurality of groups of sampled data points represents a cylinder firing event. The data signal is conditioned, and the plurality of groups of sampled data points are mapped into single misfire detection data points. The mapped single misfire detection points are then compared to a misfire detection dynamic threshold, and a misfire detection signal is output if the misfire detection points fall outside the dynamic threshold. The misfire detection system achieves high degree of accuracy through a multi-stage signal conditioning, multi-rate signal processing and statistical decision technology and a mixed size of window sampling strategy, and is capable of being installed on a large scale in motor vehicles through use of existing onboard automotive microcontroller technology.

REFERENCES:
patent: 3908366 (1975-09-01), Masaki
patent: 4179922 (1979-12-01), Bouverie et al.
patent: 4186701 (1980-02-01), Suzuki et al.
patent: 4271811 (1981-06-01), Suzuki et al.
patent: 4308519 (1981-12-01), Garcea et al.
patent: 4461257 (1984-07-01), Hosaka et al.
patent: 4488528 (1984-12-01), Morikawa
patent: 4491110 (1985-01-01), Bone et al.
patent: 4532592 (1985-07-01), Citron et al.
patent: 4562818 (1986-01-01), Kohama et al.
patent: 4606224 (1986-08-01), Tedeschi et al.
patent: 4716874 (1988-01-01), Hilliard et al.
patent: 4782692 (1988-11-01), Peden et al.
patent: 4846129 (1989-07-01), Noble
patent: 4862093 (1989-08-01), Jiewertz
patent: 4886029 (1989-12-01), Lill et al.
patent: 4928228 (1990-05-01), Fujimoto et al.
patent: 4930479 (1990-06-01), Osawa et al.
patent: 4930481 (1990-06-01), Fujimoto et al.
patent: 4932379 (1990-06-01), Tang et al.
patent: 4936277 (1990-06-01), Deutsch et al.
patent: 4941445 (1990-07-01), Deutsch
patent: 4976241 (1990-12-01), Ishida et al.
patent: 4987711 (1991-01-01), Noji et al.
patent: 4987771 (1991-01-01), Iwata
patent: 5021960 (1991-06-01), Manaka et al.
patent: 5044194 (1991-09-01), James et al.
patent: 5044195 (1991-09-01), James et al.
patent: 5056360 (1991-10-01), Dosdall et al.
patent: 5095742 (1992-03-01), James et al.
patent: 5109695 (1992-05-01), James et al.
patent: 5117681 (1992-06-01), Dosdall et al.
patent: 5144927 (1992-09-01), Denz
patent: 5200899 (1993-04-01), Ribbens et al.
patent: 5231869 (1993-08-01), Klenk et al.
patent: 5239473 (1993-08-01), Ribbens et al.
patent: 5263453 (1993-11-01), Wakahara et al.
patent: 5278760 (1994-01-01), Ribbens et al.
patent: 5307671 (1994-05-01), Akase
patent: 5313407 (1994-05-01), Tiernan et al.
patent: 5357790 (1994-10-01), Hosoya
patent: 5361628 (1994-11-01), Marko et al.
patent: 5361629 (1994-11-01), McCombie
patent: 5379634 (1995-01-01), Kuroda et al.
patent: 5381689 (1995-01-01), Ishida
patent: 5387253 (1995-02-01), Remboski, Jr. et al.
patent: 5392641 (1995-02-01), McCombie
patent: 5515720 (1996-05-01), Remboski, Jr. et al.
patent: 5544521 (1996-08-01), McCombie
patent: 5574217 (1996-11-01), McCombie
patent: 5574646 (1996-11-01), Kawasaki et al.
patent: 5576963 (1996-11-01), Ribbens et al.
patent: 5602331 (1997-02-01), Prevost
patent: 5668725 (1997-09-01), Naik
patent: 5687082 (1997-11-01), Rizzoni
patent: 5699252 (1997-12-01), Citron et al.
patent: 5699253 (1997-12-01), Puskorius et al.
FIR Windowed Filter Design Program--WINDOW, L.R. Rabiner and C.A. McGonegal (pp. 5.2-1 through 5.2-19).
Estimate of IC Engine Torque from Measurement of Crankshaft Angular Position, Girogio Rizzoni and Francis T. Connolly, Ohio State University (SAE Paper No. 932410).
An On-Line Engine Roughness Measurement Technique, William P. Mihelc and Stephen J. Citron, School of Mechanical Engineering, Purdue University (SAE Paper No. 840136).
Cylinder by Cylinder Engine Pressure and Pressure Torque Waveform Determination Utilizing Speed Fluctuations, Stephen J. Citron, John E. O'Higgins, and Lillian Y. Chen, Engine Controls Lab, School of Mechanical Engineering, Purdue University, West Lafayette, Indiana (SAE Paper No. 890489).
Advanced Signal Processing for Misfire Detection in Automotive Engines, William B. Ribbens and Steven Bieser, .sup..COPYRGT. 1995 IEEE.
Analysis and Processing of Shaft Angular Velocity Signals in Rotating Machinery for Diagnostic Applications, Yong W. Kim, Giorgio Rizzoni, Bahman Samimy, Yue Y. Wang, .sup..COPYRGT. 1995 IEEE.
Detection of Partial Misfire in IC Engines Using a Measurement of Crankshaft Angular Velocity, Donghyeon Lee (Hyundai Motor Co.) and Giorgio Rizzoni (The Ohio State Univ.) (SAE Paper No. 951070).
Road Test Results of an I-C Engine Misfire Detection System, W.B. Ribbens and J. Park, University of Michigan (SAE Paper No. 930398).
Road Tests of a Misfire Detection System, William B. Ribbens and Jaehong Park, University of Michigan (SAE Paper No. 940975).
A New Metric for Torque Nonuniformity, William B. Ribbens (SAE Paper No. 830425).
Applications of Precise Crankshaft Position Measurements for Engine Testing, Control and Diagnosis, W.B. Ribbens and G. Rizzoni (SAE Paper No. 890885).
A Mathematical Model Based Method for Diagnosing Failures in Automotive Electronic Systems, W.B. Ribbens (SAE Paper No. 910069).
Onboard Diagnosis of Engine Misfires, WIlliam B. Ribbens and Giorgio Rizzoni (SAE Paper No. 901768.
Estimate of Indicated Torque from Crankshaft Speed Fluctuations: A Model for the Dynamics of the IC Engine, Giorgio Rizzoni, IEEE Transactions on Vehicular Technology, vol. 38, No. 3, Aug. 1989 (.sup..COPYRGT. 1990 IEEE).
Crankshaft Position Measurement with Applications to Ignition Timing, Diagnostics and Performance Measurement, Yibing Dong, Giorgio Rizzoni and William B. Ribbens--.COPYRGT..sup.. 1987 (SAE Paper No. 871914).
Fast Transforms for Rapid Isolation of Misfiring Cylinders, Giorgio Rizzoni .sup..COPYRGT. 1987 (SAE Paper No. 871915).
Applications of Precise Crankshaft Position Measurements for Engine Testing, Control and Diagnostics, W.B. Ribbens and G. Rizzoni (SAE Paper No. 890885).
Torque Nonuniformity Measurements in Gasoline Fueled Passenger Cars Equipped with Automatic Transmission--Theory and Experimental Results, W.B. Ribbens and D. Gross (SAE Paper No. 860414).
A Non-Contacting Torque Sensor for the Internal Combustion Engine, W.B. Ribbens (SAE Paper No. 810155).
Experimental Road Test of a Noncontacting Method of Measuring I-C Engine Torque Nonuniformity, William B. Ribbens, .sup..COPYRGT. 1985 (SAE Paper No. 850454).
On-Line Estimation of Indicated Torque in IC Engines Using Nonlinear Observers, Sergey Drankunov, Giorgio Rizzoni and Yue-Yun Wang, The Ohio State University (SAE Paper No. 950840).
Methods of On-Board Misfire Detection, Gunther Plapp, Martin Klenk and Winfried Moser, Robert Bosch GmbH (SAE Paper No. 900232).
Misfire Detection by Evaluating Crankshaft Speed--A Means to Comply with OBDII, Martin Klenk and Winfried Moser (Robert Bosch GmbH) and Werner Mueller and Wolfgang Wimmer (Audi AG) (SAE Paper No. 930399).
Diagnosis of Individual Cylinder Misfires by Signature Analysis of Crankshaft Speed Fluctuations, G. Rizzoni, University of Michigan, .sup..COPYRGT. 1989 (SAE Paper No. 890884).
Measurement of Engine Misfire in the Lamborghini 533 V-12 Engine Using Crankshaft Speed Fluctuations, P. Azzoni and G. Cantoni (ENEA), G. Minelli and D. Moro (Universita di Bologna), Giorgio Rizzoni (The Ohio State Univ.), M. Ceccarani and S. Mazzetti (Lamborghini Automobili) (SAE Paper No. 950837).
The Effect of Engine Misfire on Exhaust Emission Levels in Spark Ignition Engines, Ahmed Soliman, Giorgio Rizzoni, and Vasanth Krishnaswami, Ohio State University (SAE Paper No. 950480).

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