나선형 흡기포트의 유동특성이 과급식 디젤엔진의 성능 및 배출가스에 미치는 영향

Effects of the Flow Characteristics of Helical Intake Port on the Performance and Emission in a Turbocharged DI Diesel Engine.

  • 윤준규 (경원전문대학 자동차정비과) ;
  • 양진승 (명지대학교 기계공학과) ;
  • 차경옥 (명지대학교 기계공학과)
  • 발행 : 2000.09.01

초록

This study is to consider that the helical intake port flow and fuel injection system have effects on the characteristics of engine performance and emissions in a turbocharged DI diesel engine of the displacement 9.4L. The swirl ratio for ports was modified by hand-working and measured by impulse torque swirl meter, For the effects on performance and emission, the brake torque, BSFC were measured by engine dynamometer and NOx, smoke were by gas analyzer and smoke meter. As a result of steady flow test, when the valve eccentricity ratio are closed to cylinder wall, the flow coefficient and swirl intensity are increased, And as the swirl is increased, the mean flow coefficient is decreasing, whereas the gulf factor is increasing. Also, through engine test its can be expected to meet performance and emission by the following applied parameter; the swirl ratio is 2.43, injection timing is BTDC $13^{\circ}$CA and compression is 15.5.

키워드

참고문헌

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