A Numerical Analysis of Oil Separation Performance Classified by Oil Mist Diameter for Cyclone Oil Separator

실린더 헤드커버 내장형 오일분리 장치의 오일 직경별 분리효율에 관한 해석적 연구

  • 김형구 (국민대학교 자동차전문대학원) ;
  • 윤여빈 (국민대학교 자동차공학전문대학원) ;
  • 박영준 (국민대학교 자동차공학전문대학원) ;
  • 이성욱 (국민대학교 기계자동차공학부) ;
  • 조용석 (국민대학교 기계자동차공학부)
  • Published : 2008.11.05

Abstract

In conventional closed-loop crankcase ventilation systems, the lubrication oil had to be re-circulated to the intake manifold, in the form of oil mist mixed with the blow-by gas. This blow-by gas containing the engine lubricant oil affects on the engine problems and the exhaust emissions. A high-efficient oil separator is required to minimize consumption of engine oil and reduce harmful emissions. In the conventional oil separator of CI engines, it has good oil separation performance even though separator design is simple, due to lots of the blow-by gas. As the emission regulation becomes severe, the oil separator for SI engines is also required. But in SI engines, separator design should be optimized, due to small size of oil particles and little amount of blow-by gas. In this study, oil separation performance classified by diameter of oil mist in cylinder head cover internal model which has three cyclones and two baffle plates for SI engine is calculated with CFD methodology.

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