한국자동차공학회논문집 (Transactions of the Korean Society of Automotive Engineers)

  • 제13권2호
  • /
  • Pages.93-100
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  • 2005
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  • 1225-6382(pISSN)
  • /
  • 2234-0149(eISSN)
한국자동차공학회 (The Korean Society of Automotive Engineers)
권호 표지

피에조 인젝터의 모델링 및 분사율의 추정

Modeling and Injection Rate Estimation of a Piezo Injector for CRDI Diesel Engines

  • 발행 : 2005.03.01
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초록

Stringent emission regulations and increasing demands on reductions of noise and vibration of common rail direct injection (CRDI) diesel engines lead to the advent of piezo-actuated injectors. Compared with solenoid-actuated injectors, piezo-actuated injectors generate greater force and give faster response time, resulting in more accurate and faster injections. The accurate and fast response of an injector can offer an opportunity to control the combustion process and pollutant formation. In this study, the mathematical model of a piezo-actuated injector is developed. An estimator of the injection rate of the piezo-actuated injector is designed based on this model. The sliding mode theory is applied to the estimator design in order to overcome model uncertainties. The injector model and the estimator are verified by the injection experiments in an injector test bench. The simulation and the experimental results show that the proposed sliding mode observer can effectively estimate the injection timing and the injection rate of the piezo-actuated injector.

키워드

참고문헌

  1. K. Nam, S. Park and M. Sunwoo, 'Dynamic Model of an HSDI Common-rail Injector and Injection Rate Estimation,' Transactions of KSAE, Vol.11, No.5, pp.43-49, 2003
  2. G. Stumpp and M. Ricco, 'Common Rail - An Attractive Fuel Injection System for Passenger Car DI Diesel Engines,' SAE 960870, 1996
  3. W. Boehner and K. Hummel, 'Common Rail Injection System for Commercial Diesel Vehicles,' SAE 970345, 1997
  4. N. Jalili, J. Wagner and M. Dadfarnia, 'A Piezoelectric Driven Ratchet Actuator Mechanism with Application to Automotive Engine Valves,' Mechatronics, Vol.13, pp.933-956, 2003 https://doi.org/10.1016/S0957-4158(03)00009-6
  5. H. Adriaens, W. L. de Koning and R. Banning, 'Modeling Piezolectric Actuators,' IEEE/ASME Transactions on Mechatronics, Vol.5, No.4, pp.331-341, Dec, 2000 https://doi.org/10.1109/3516.891044
  6. An American National Standard: IEEE Standard on Piezoelectricity, ANSI/IEEE Standard 176-1987, 1987
  7. D. Baranowski, W. Klugl and D Schoppe, 'Simulation and Design Optimization of a Common Rail Piezo Injector for Passenger Car DI Diesel Engines,' Fuel Injection Systems, pp.219-232, 1999
  8. E. A. Misawa and J. Hedrick, 'Nonlinear Observers - A State-of-the-Art Survey,' Trans. ASME, Journal of Dynamic Systems, Measurement, and Control, Vol.111, Sep., 1989
  9. J. E. Slotine, J. K. Hedrick and E. A. Misawa, 'On Sliding Observer for Nonlinear Systems,' Trans. ASME, Journal of Dynamic Systems, Measurement, and Control, Vol.109, Sep., 1987
  10. V. L. Streeter and E. B. Wylie, Fluid Mechanics, McGraw-Hill, New York, 1979