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Analysis of Sensitivity Characteristics with AMESim Model for Piezo Injector

AMESim기반 피에조 인젝터용 해석모델의 민감도 특성 해석

  • Jo, Insu (Department of Mechanical Engineering, Graduate School, Soongsil University) ;
  • Kwon, Jiwon (Department of Mechanical Engineering, Graduate School, Soongsil University) ;
  • Lee, Jinwook (Department of Mechanical Engineering, Soongsil University)
  • 조인수 (숭실대학교 대학원 기계공학과) ;
  • 권지원 (숭실대학교 대학원 기계공학과) ;
  • 이진욱 (숭실대학교 기계공학과)
  • Received : 2012.01.26
  • Accepted : 2012.07.16
  • Published : 2013.03.01

Abstract

Performance of DI diesel engine with high fuel injection method is directly related to the emission characteristics and fuel consumption. At present, diesel injection system with piezo element is replacing conventional solenoid type due to their faster electro-mechanical properties. In this study, it was investigated the sensitivity characteristics regarding internal hydraulic modeling based on the AMESim environment of piezo-driven injector The analytic parameter for this study defined such as In/Out orifice, injection hole's diameter and driven voltage on piezo stack. As the results, it was shown that these parameter influence on a fast response characteristics of piezo-driven injector. Also we found fuel pressure recovery time is faster about 0.1 ms due to larger IN orifice diameter. And larger OUT orifice diameter occurs maximum pressure drop with faster its timing of about 0.2 ms.

Keywords

References

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