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Misfire Diagnostic Strategy for Motorcycles
Published October 15, 2013 by Society of Automotive Engineers of Japan in Japan
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The on-board diagnostic (OBD) technologies for automobiles have been well-developed; however, it could not be carried out on motorcycles directly since the operation conditions are quite different between automobiles and motorcycles. In this research, we propose a misfire detection strategy for motorcycles based on the characteristics of crankshaft rotational dynamics. At first, experiments were done on a 125cc motorcycle to investigate the variation of instantaneous crankshaft rotational speed in power stroke while the misfire events are injected at different engine operation conditions. In order to generate misfire events for the engine, a misfire generator is established for providing specific misfire rates. If a misfire takes place at higher engine speed, the instantaneous rotational speed will decline continuously during power stroke due to higher friction losses, which leads to the reduction of average crankshaft rotational speed as well. As for the misfire events under idle operation, the change of instantaneous crankshaft rotational speed becomes unapparent. The observed crankshaft rotational dynamics are utilized to form a misfire diagnostic strategy for motorcycles which is implemented in a F28335 digital signal processor. Vehicle test results show that the misfire events can be detected correctly for idle and higher engine speed operation.
CitationTsai, H., Gao, B., Chiang, M., Chen, B. et al., "Misfire Diagnostic Strategy for Motorcycles," SAE Technical Paper 2013-32-9058, 2013, https://doi.org/10.4271/2013-32-9058.
- European Commission Accompanying Document to the Proposal for a Regulation of the European Parliament and of the Council SEC/2010/1152 final
- Geraldo , G. Differences between On Board Diagnostic Systems (EOBD, OBD-II, OBD-BR1 and OBD-BR2) SAE paper NO. 2006-01-2671 2006
- National Aeronautics and Space Administration http://www.giss.nasa.gov/ research/briefs/gornitz_09/
- Komachiya , M. , and Kurihara , N. , Kodama A. , Sakaguchi , T. , Fumino , T. , and Watanabe , S. A Method of Misfire Detection by Superposing Outputs of Combustion Pressure Sensors SAE Paper NO. 982588
- Ceccarani , M. , Rebottini , C. and Bettini , R. Engine Misfire Monitoring for a V12 Engine by Exhaust Pressure Analysis SAE Paper NO. 980518
- Youngkyo , C. , Choongsik , B. , Sangmin , C. and Kumjung , Y. Application of a Wide Range Oxygen Sensor for the Misfire Detection SAE Paper No. 1999-01-1485 1999
- Ohashi , Y. Fukui , W. and Ueda , A. Application of Vehicle Equipped with Ionic Current Detection System for the Engine Management System SAE Paper NO. 970032
- Miyata , S. , Ito , Y. , and Shimasaki , Y. Flame Ion Density Measurement Using Spark Plug Voltage Analysis SAE Paper NO. 930462
- Plapp , G. Klenk , M. and Moser , W. Method of On-Board Misfire Detection SAE Paper No. 900232
- Klenk , M. Moser , W. Mueller , W. and Wimmer , W. Misfire Detection by Evaluation Crankshaft Speed- A Means to Comply with OBDII SAE Paper No. 930399
- Mahieu , M.P. Duponcheele , B. Leduc , J.L. Vanhemelrijk , M. Morenville , and Dehout P. Misfire Detection on S.I. Engines, by Instantaneous Torque Analysis SAE Paper NO. 2000-01-0367 2000
- Cavina , N. E. Corti and Minelli , G. Serra , G. Misfire Detection Based on Engine Speed Time-Frequency Analysis SAE Paper No. 2002-01-0480
- Chung , S. Y. Park , J. The OBD-II System in the Hyundai Accent SAE Paper NO. 982551
- Förster , J. Lohmann , A. Mezger , M. and Ries-Müller , K. Advanced Engine Misfire Detection for SI-Engines SAE Paper No. 970855
- Su , M.K The Strategy of Stroke Identification for Scooter Engine Nation Taipei university of Technology 46 48
- title13, California code regulation, section 1968.2