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A Study on the Piezo Injector Control Algorithm for CRDI Diesel Engines  

Oh, Byoung-Gul (Department of Automotive Engineering, Hanyang Univ.)
Oh, Seung-Suk (Department of Automotive Engineering, Hanyang Univ.)
Park, Yeong-Seop (Department of Automotive Engineering, Hanyang Univ.)
Lee, Kang-Yoon (Hanyang Univ.)
SunWoo, Myoung-Ho (Hanyang Univ.)
Publication Information
Journal of the Korean Society for Precision Engineering / v.26, no.2, 2009 , pp. 54-62 More about this Journal
Abstract
The purpose of this study is to develop a piezo injector driver for common-rail direct injection diesel engines. In this research, we analyzed the electrical and mechanical characteristics of the piezo actuator through experiments. Current flow and charging voltage of the piezo injector are controlled by the PWM signal of variable duty ratio in order to realize both fast response and low peak current. The optimal switching duty ratio was designed by modeling and analyzing of the piezo driver circuit. In order to avoid resonance and unacceptably long settling time, appropriate frequency range of the PWM signal was derived based on the driver circuit model. The developed injector driver was validated by experiments under various fuel rail pressure, injection duration, and charging voltage.
Keywords
CRDI; Current Control; Fuel Injection System; Injector Driver; Piezo Injector;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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1 Lee, K. Y., Oh, B. G. and Sunwoo, M. H., "Development of a Programmable Driver for Solenoid-type 2-way-valve Common-rail Injectors," International Pacific Conference on Automotive Engineering - IPC-13, pp. 349-354, 2005
2 Phillips, J. R., "Piezoelectric Technology Primer," CTS Wireless Components, 2000
3 Jalili, N., Wagner, J. and Dadfarnia, M., "A piezoelectric driven ratchet actuator mechanism with application to automotive engine valves," MECHATRONICS, Vol. 13, Issues 8-9, pp. 933-956, 2003   DOI   ScienceOn
4 An American National Standard, 'IEEE Standard on Piezoelectricity, ANSI/IEEE Standard 176,' pp. 4-11, 1987
5 Chun, D. P., Lim, J. S., Ahn, S. Y., Kim, H. S., Shin, S. J. and Yoo, W. J., 'Piezo Injector Driving Circuit in Diesel Common Rail System,' KSAE Fall Conference Proceedings, Vol. 1, pp. 391-396, 2003
6 Dorlemann, C., Muss, P., Schugt, M. and Uhlenbrock R., 'New High Speed Current Controlled Amplifier for PZT Multilayer Stack Actuators,' 8th International Conference on New Actuators, 2002
7 Iked, T., "Fundamentals of piezoelectricity," Oxford University Press, 1990
8 Schommers, J., Duvinage, F., Stotz, M., Peters, A., Ellwanger, S., Koyanagi, K. and Gildein, H., 'Potential of Common Rail Injection System for Passenger Car DI Diesel Engines,' SAE paper, No. 2000-01-0944, 2000
9 Kasuga, C., Nakagawa, Y., Harashima, F., Nishimura, T. and Ban, M., "Characteristic Analysis of Multi- Layer Piezo-Ceramic Actuator (Part II)," Proceedings of the IEEE IECON 93, Vol. 3, pp. 1573-1576, 1993   DOI
10 Sa, J. S., Chung, N. H. and Sunwoo, M. H., "A study on the injection rate observer of the piezo-actuated and solenoid-operated injectors for CRDI diesel engines," Journal of the Korean Society for Precision Engineering, Vol. 24, No. 9, pp. 52-59, 2007   과학기술학회마을
11 Newcomb, C. V. and Flinn, I., 'Improving the Linearity of Piezoelectric Ceramic Actuators,' Electronic Letters, Vol. 18, pp. 442-444, 1982   DOI   ScienceOn
12 Cordes, S., Hoika, J., Leteinturier, P. and Preuschoff, C., 'Semiconductor Solutions for Piezo Injector System,' SAE Paper, No. 2003-01-0710, 2003
13 Guerrassi, N. and Dupraz, P., 'A Common Rail Injection System For High Speed Direct Injection Diesel Engines,' SAE paper, No. 980803, 1998
14 Bindig, R. and Helke, G., 'Application of Piezo ceramic Multilayer Actuators,' Experiences and Solutions, 7th International Conference on New Actuators, pp. 53-57, 2000