한국분무공학회지 (Journal of ILASS-Korea)

  • 제19권1호
  • /
  • Pages.9-14
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  • 2014
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  • 1226-2277(pISSN)
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  • 2288-9051(eISSN)
한국분무공학회 (Institute for Liquid Atomization and Spray Systems-Korea)
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3개 구동방식(SI, PI, DPI)별 디젤HEV용 인젝터의 분무 특성 비교

Comparison on Spray Characteristics of Diesel HEV Injectors for 3-different Driving Type (SI, PI, DPI)

  • 정명철 (숭실대학교 일반대학원 기계공학과) ;
  • 성기수 (숭실대학교 일반대학원 기계공학과) ;
  • 김상명 (숭실대학교 일반대학원 기계공학과) ;
  • 이진욱 (숭실대학교 기계공학과, 한국액체미립화학회)
  • 투고 : 2014.01.01
  • 심사 : 2014.03.04
  • 발행 : 2014.03.31
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초록

Performance of DI diesel engine with high-pressure fuel injection equipment is directly related to its emission characteristics and fuel consumption. So, the electro-hydraulic injector for the common-rail injection system should be designed to meet the precise high fuel delivery control capability. Currently, most high pressure injector in use has a needle driven by the solenoid coil energy or the piezo actuator controlled by charge-discharge of output pulse current. In this study, macroscopic spray approaching method was applied under constant volume chamber to research the performance of three different injectors : solenoid, indirect-acting piezo and direct-acting piezo type for CR direct-injection. LED back illumination for Mie scattering was applied on the liquid spray visible of direct-acting piezo injector, including hydraulic-servo type solenoid and piezo-driven injectors. As main results, we found that a direct-acting piezo injector had better a spray tip penetration than hydraulic-servo injectors in spray visualization.

키워드

참고문헌

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