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FEM modeling of the piezoelectric driving system in the design of direct-acting diesel injectors

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  • Ferrari, A.
  • Mittica, A.

Abstract

A detailed mathematical model of a direct-acting prototypal piezo-injector has been developed to help experimentation, design and component optimization. The thermo-fluid dynamics of the hydraulic circuit components, including the injector feeding pipe, injector drilled pipes and nozzle, was modeled in conjunction with the mechanics of the mobile elements in the injector. A Finite Element Method (FEM) model of the piezo-stack has been developed to predict the temporal distribution of the elongation of the piezo-actuator. The piezoelectric submodel was based on the experimental trace of the current provided to the piezo-stack and was verified to correctly reproduce the dynamic response of the injector piezoelectric driving system.

Suggested Citation

  • Ferrari, A. & Mittica, A., 2012. "FEM modeling of the piezoelectric driving system in the design of direct-acting diesel injectors," Applied Energy, Elsevier, vol. 99(C), pages 471-483.
    • Handle: RePEc:eee:appene:v:99:y:2012:i:c:p:471-483
    DOI: 10.1016/j.apenergy.2012.05.048
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    References listed on IDEAS

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    1. Payri, R. & Salvador, F.J. & Gimeno, J. & De la Morena, J., 2011. "Influence of injector technology on injection and combustion development - Part 1: Hydraulic characterization," Applied Energy, Elsevier, vol. 88(4), pages 1068-1074, April.
    2. Battistoni, Michele & Grimaldi, Carlo Nazareno, 2012. "Numerical analysis of injector flow and spray characteristics from diesel injectors using fossil and biodiesel fuels," Applied Energy, Elsevier, vol. 97(C), pages 656-666.
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    Citations

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    Cited by:

    1. d’Ambrosio, S. & Ferrari, A., 2017. "Boot injection dynamics and parametrical analysis of boot shaped injections in low-temperature combustion diesel engines for the optimization of pollutant emissions and combustion noise," Energy, Elsevier, vol. 134(C), pages 420-437.
    2. Stefano d’Ambrosio & Alessandro Ferrari & Alessandro Mancarella & Salvatore Mancò & Antonio Mittica, 2019. "Comparison of the Emissions, Noise, and Fuel Consumption Comparison of Direct and Indirect Piezoelectric and Solenoid Injectors in a Low-Compression-Ratio Diesel Engine," Energies, MDPI, vol. 12(21), pages 1-16, October.
    3. S., d'Ambrosio & A., Ferrari, 2018. "Diesel engines equipped with piezoelectric and solenoid injectors: hydraulic performance of the injectors and comparison of the emissions, noise and fuel consumption," Applied Energy, Elsevier, vol. 211(C), pages 1324-1342.
    4. Seo, Dong-yeon & Koo, Choongwan & Hong, Taehoon, 2015. "A Lagrangian finite element model for estimating the heating and cooling demand of a residential building with a different envelope design," Applied Energy, Elsevier, vol. 142(C), pages 66-79.
    5. Dudem, Bhaskar & Kim, Dong Hyun & Bharat, L. Krishna & Yu, Jae Su, 2018. "Highly-flexible piezoelectric nanogenerators with silver nanowires and barium titanate embedded composite films for mechanical energy harvesting," Applied Energy, Elsevier, vol. 230(C), pages 865-874.
    6. Ferrari, A. & Mittica, A. & Spessa, E., 2013. "Benefits of hydraulic layout over driving system in piezo-injectors and proposal of a new-concept CR injector with an integrated Minirail," Applied Energy, Elsevier, vol. 103(C), pages 243-255.
    7. Ferrari, A. & Mittica, A., 2016. "Response of different injector typologies to dwell time variations and a hydraulic analysis of closely-coupled and continuous rate shaping injection schedules," Applied Energy, Elsevier, vol. 169(C), pages 899-911.

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