Journal of ILASS-Korea (한국분무공학회지)

Institute for Liquid Atomization and Spray Systems-Korea (한국분무공학회)
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Spray Characteristics of Solenoid-driven and Piezo-driven Type Injectors for the Clean Diesel Engine Application

클린 디젤엔진 적용을 위한 솔레노이드 및 피에조 인젝터의 분무특성

  • 전문수 (한국교통대학교 에너지시스템공학과)
  • Received : 2012.09.18
  • Accepted : 2012.09.24
  • Published : 2012.09.30
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Abstract

This paper presents spray characteristics of piezo-driven type common-rail injector and comparisons to those of solenoid-driven type. Experiments were conducted to measure spray penetraion and SMD distributions using a spray visualization system and PDPA (phase Doppler particle analyzer) system. Injection conditions including injection pressure and energizing durations were varied in order to analyzing effects of injection conditions on spray characteristics. Furthermore, ambient pressures were increased for keeping ambient gas density close to in-cylinder pressure of diesel engine. Results showed that injection delay of piezo-driven type injector was much shorter than those of solenoid driven type and exhibited enhanced atomization performances.

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References

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