• Title/Summary/Keyword: 선박 디젤기관

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A Study on the Method for Calculating the Reliability of Diesel Engines in Operation (디젤기관의 운전신뢰성 계산 방법에 관한연구)

  • 우종호
    • Journal of Advanced Marine Engineering and Technology
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    • v.22 no.3
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    • pp.405-410
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    • 1998
  • 디젤 기관의 신뢰성 평가는 일반적으로 운전주에 발생한 사고 내용을 통계처리하여 팡가하기 때문에 운전자가 사전에 사고 발생을 예견하여 적절한 시기에 예방정비를 한다든지 기관의 상태에 따른 최적 운전조건을 파악하여 기관을 안전하게 운전하는데 어려움이 있다. 또한 디제 기관을 새로이 개발한다든지 설계 변경을 할 경우 기관의 신뢰성을 평가하는데도 상당한 어려움이 있다, 본논문에서는 선박용 주기관으로 사용되는 디젤기관을 대상으로하여 디젤기관의 운전상태에 따른 운전신뢰성을 예측할 수 있는 프로그램을 개발하였으며 예측결과를 실험결과와 비교·검토하였다.

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Development of Simulation Program of Two-Stroke Marine Diesel Engines (선박용 2행정 디젤기관의 성능시뮬레이션 프로그램 개발)

  • Choi, Jae-Sung;Jeong, Chan-Ho;Cho, Kwon-Hae;Lee, Jin-Uk;Ha, Tae-Bum;Kim, Houng-Soo
    • Journal of Advanced Marine Engineering and Technology
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    • v.34 no.1
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    • pp.62-68
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    • 2010
  • The requirement of high efficiency and low emission for marine diesel engines are being enforced because of air pollution and climate change on the earth. In connection with these, many new technologies are considered. But they are mainly for new building ship. It is necessary to be concerned about the improvement of engine performance for existing ship. In this paper, the simulation program for performance of marine two-stroke diesel engine was developed to predict the deteriorating performance according to elapsed time for existing ship. The result was compared with the result of the program named TOP-CODE which was used by engine maker and checked to be shown good agreement between them.

협회뉴스

  • Korean Society of Ship Inspection and Technology
    • 선박안전기술공단 소식
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    • s.2
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    • pp.2-3
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    • 2006
  • "수상레저기구에 대한 안전검사 및 검정업무 대행"/ 2005년도 "올해의 KST인" 선발/ 선도그룹 양성을 위한 위탁교육 실시/ 디젤기관의 질소산화물(NOx) 배출규제 관련 간담회 개최/ "신규직원 공채"

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A Case Study on the Failure of Piston for Marine Diesel Engine (선박용 디젤기관의 피스톤 파손사고에 대한 연구)

  • Kim, Jong-Ho
    • Proceedings of the Korean Society of Marine Engineers Conference
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    • 2005.11a
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    • pp.222-223
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    • 2005
  • The Any failure of piston of marine diesel engine must be regarded as serious, and any steps which can be taken to prevent such failure are desirable. The purposes of this study is to investigate and to analyse the failure causes of piston of marine diesel engine. If this paper has accomplished that end it can be counted as being of some slight value to the marine industry.

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Experimental Study on Combustion Characteristics of Biodiesel Waste Cooking Oil in Marine Diesel Engine (선박디젤기관에서 바이오디젤 폐식용유의 연소특성에 대한 실험적 연구)

  • Cho, Sang-Gon
    • Journal of Advanced Marine Engineering and Technology
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    • v.39 no.4
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    • pp.381-386
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    • 2015
  • Environmental pollution and alternative energy has attracted increasing interest. The use of diesel engines is expected to increase in the world owing to their fuel economy. The problem of air pollution emissions from marine engines is causing a major concern in many areas. An alternative fuel was introduced as an environmentally friendly fuel to reduce the toxic emissions from conventional fossil fuels. Biodiesel fuel, which is a renewable energy is highlighted as environmentally friendly energy. This energy can be operated in regular diesel engines when it is blended with invariable ratios without making changes. In this study, a bio-diesel fuel was produced from waste cooking oil and applied to a marine diesel engine to examine the effects on the characteristics of combustion. Waste cooking oil contains a high cetane number and viscosity component, a low carbon and oxygen content. As a result, the brake specific fuel consumption was increased, and the cylinder pressure, rate pressure rise and rate of heat release were decreased.