Journal of ILASS-Korea (한국분무공학회지)

Institute for Liquid Atomization and Spray Systems-Korea (한국분무공학회)
권호 표지

Characteristics of Pressure wave Pulsation at Carburetor on Small SI Engine

소형엔진 기화기 내의 흡기 맥동 특성

  • 오진우 (전북대학교 기계공학과 대학원) ;
  • 최영하 (전북대학교 기계공학과 대학원) ;
  • 김병국 (전북대학교 기계공학과 대학원) ;
  • 이동근 (전북대학교 기계공학과 대학원) ;
  • 김동선 (한성공업주식회사) ;
  • 윤석주 (전북대학교 기계공학과)
  • Published : 2009.03.31
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Abstract

This paper presents the pulsation of carburetor inlet and outlet pressure of a small SI gasoline engine. The engine used in this paper is a 23cc, single cylinder, diaphragm carburetor, two-stroke, air-cooled for brush cutter. The rpm and pressure wave pulsation at the inlet and the outlet of carburetor were measured and analysed for the understand of the internal air flow into the barrel on the diaphragm carburetor. These data should be used for the development of the duel fuel injection system for gasoline and LPG. The results showed that the carburetor inlet pressure variations were very steady, but the pressure variations at carburetor outlet were very sensitive to the pressure variation into the crank case and were to similar independently to the engine speed on partial opened throttle conditions. According to increasing engine speed, the pressure waves started to come out and be developed after closing the intake port of the engine at carburetor outlet. Reverse flow occurred on the WOT (wide open throttle) condition.

Keywords

References

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