Transactions of the Korean Society of Automotive Engineers (한국자동차공학회논문집)

The Korean Society of Automotive Engineers (한국자동차공학회)
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Diesel Engine Intake Port Analysis Using Reverse-engineering Technique

리버스 엔지니어링을 통한 디젤엔진 흡기포트의 성능 비교

  • Kim, Chang-Su (Mechanical Engineering, Graduate School, Kongju National University) ;
  • Park, Sung-Young (Division of Mechanical & Automotive Engineering, Kongju National University)
  • 김창수 (공주대학교 일반대학원 기계공학과) ;
  • 박성영 (공주대학교 기계자동차공학부)
  • Received : 2015.01.14
  • Accepted : 2015.05.08
  • Published : 2015.09.01
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Abstract

In this paper, we built a three-dimensional model by applying reverse engineering techniques on targeting the intake port of 2900cc class diesel engine before that three-dimensional design technique is applied. The performance of the intake port is predicted and analysed using the computational flow analysis. Flow Coefficient and Swirl Ratio have been analyzed for two intake port models. One is the intake port for the diesel engine with plunger-type fuel system, and the other is for the diesel engine with CRDI fuel system. Computational result shows that the Flow Coefficient of the intake port with CRDI fuel system is increased upto 10 percentage compared with that with plunger-type. Also, the intake port with plunger-type has high Swirl Ratio at high valve lift, and the intake port with CRDI fuel system has high Swirl Ratio at relatively low valve lift. It is believed that because of high performance of the fuel injector, the intake port with CRDI fuel system is designed for more air amount and not much swirl flow at high valve lift. However, high swirl flow is required at low valve lift for initial fuel and air mixing. The result of this study may be useful for the re-manufacturing industry of automotive parts.

Keywords

References

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