Measurement of Flow Velocity Distribution at Inlet and Exit of Diesel Particulate Filter

디젤 엔진 매연여과장치 입.출구에서의 유속 분포 측정

  • 이충훈 (서울산업대학교 자동차공학과) ;
  • 최웅 (서울산업대학교 자동차공학과) ;
  • 배상홍 (서울산업대학교 자동차공학과) ;
  • 이수룡 (서울산업대학교 자동차공학과)
  • Published : 2007.06.30

Abstract

The flow velocity distribution at inlet and exit of a DPF was measured using a Pitot tube and 2-D positioning equipment. An adaptor which was designed for accessing the Pitot tube probe into inlet of the DPF was fabricated with inlet flange of the DPF. The Pitot tube which was mounted in the 2-D positioning machine could access to the inlet of the DPF through the rectangular window of the adaptor. Automation of the velocity measurement at the inlet and exit of the DPF was effectively achieved and measuring time was reduced drastically. The flow velocity distribution at the inlet of the DPF showed parabola shape with maximum velocity near to the center of the DPF, as expected. The velocity distribution at the exit of the DPF showed crown shape, that is, the flow velocity distribution near to the center of the DPF is lower than that at surrounded peripheral region of the DPF.

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