Journal of Advanced Marine Engineering and Technology

The Korean Society of Marine Engineering (한국마린엔지니어링학회)
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Comparison of emission characteristics between fuel injection systems with echanical cam and electric control type on low speed 2 stroke diesel engine for ship propulsion

선박추진용 기계적 캠 구동식 및 전자제어식 연료분사 시스템을 가진 저속 2행정 디젤엔진의 배기특성 비교

  • Lee, Sang Deuk (Department of Ship Operation, Korea Maritime and Ocean University) ;
  • Koh, Dae Kwon (Department of Mechanical System Engineering, Pukyong National University) ;
  • Jung, Suk Ho (Department of Mechanical System Engineering, Pukyong National University)
  • Received : 2013.07.12
  • Accepted : 2013.09.16
  • Published : 2013.09.30
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Abstract

Many researches have been carried out consistently for the green ship owing to its economic increasement, efficiency and convenience. One of them is an electronic controlled marine diesel engine. However, we are suffered from dissemination of above engine, due to its anxiety about safety and reliability. In order to solve these problems in this study, emission characteristics test of main propulsive two-stroke diesel engine, equipped both electronic control and cam drive fuel injection systems, has been performed and evaluated under the various load conditions. From the test results, we have confirmed that exhaust gas emission characteristics of the electronic control system is similar to the cam drive system in eco-mode operation, but NOx in emission mode has been decreased 100ppm or more in full load condition. HC emission from the electronic control system is decreased 10~20ppm at 50% load, and 35~40ppm at 25% load in comparison to cam drive system. In fuel consumption, it is considered that 7g/kWh is decreased than the value of cam drive system at 700bar of injection pressure, which is 200bar higher than cam drive system.

선박운항의 경제성, 효율성 및 편리성을 높이면서 친환경적인 선박에 대한 연구가 지속적으로 추진되고 있는데, 그 중 한 예로 전자제어식 디젤엔진의 개발을 들 수 있다. 그러나 전자제어식 엔진으로 추진되는 선박은 안전성과 신뢰성이 우려되고 있어 이들을 선박에 널리 보급하는데 어려움을 겪고 있다. 본 연구에서는 이러한 문제를 해결하기 위하여 전자제어식과 캠구동식 연료분사시스템을 탑재하고 있는 선박의 주기관을 이용하여 시스템별 배기성능을 비교 분석하였다. 그 결과 전자제어식의 경제적 운항 모드에서는 캠구동식과 비슷한 배기특성을 나타내었지만, 유해가스 저배출 모드의 100% 부하상태에서는 NOx를 100ppm 이상, HC의 경우 50% 부하상태에서는 10~20ppm을, 25% 부하상태에서는 35~40ppm을 캠구동식에 비해 저감시킨다. 연료소비율에 있어서는 25% 부하상태에서 압축압력을 캠 구동식에 비해 200bar 이상 증가시킨 700bar로 유지할 때 7g/kWh 정도 저감되었다.

Keywords

References

  1. G. Stumpp and M. Ricco, Common Rail - An Attractive Fuel Injection System for Passenger Car DI Diesel Engines, SAE Technical Paper Series, no. 960870, pp. 183-191, 1996.
  2. U. Flaig, W. Polach and G. Ziegler, Common Rail System (CR-System) for Passenger Car DI Diesel Engines; Experiences with Applications for Series Production Projects, SAE Technical Paper Series, no. 1999-01-0191, pp. 1-10, 1999.
  3. J. Hlousek, Common Rail System for Large Diesel Engines", CIMAC Congress 2004, no. 117, pp. 1-6, 2004.
  4. T. S. Kundsen, C. E. Egeberg, O. Grone, and N. Kjemtup, "The MC/MC-C engines and their development to meet present and future demands", CIMAC Congress 2004, no. 81, pp. 1-12, 2004.
  5. T. S. Knudsen and C. E. Egeberg, "Design of the new two-stroke engines from MAN diesel A/S", CIMAC Congress 2007, no. 68, pp. 1-13, 2007.
  6. H. Brunner, M. Betschart and S. Fankhauser, "Common-rail Wartsila two-stroke engines in practice", CIMAC Congress 2007, no. 77, pp. 1-14, 2007.
  7. M. Sugihara, K. Edo, and T. Tanida, "Creating a whole range of benefits with the Mitsubishi UEC eco-engine", CIMAC Congress 2007, no. 75, pp. 1-10, 2007.
  8. M. Flory and J. Hiltner, "Engine control system development using rapid prototyping hardware and software", CIMAC Congress 2007, no. 179, pp. 1-13, 2007.