Journal of ILASS-Korea (한국분무공학회지)

Institute for Liquid Atomization and Spray Systems-Korea (한국분무공학회)
권호 표지
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Measurements of Spray Characteristics According to Nozzle Property in Dual Fuel Engine with a Mechanical Fuel Pump

기계식 연료펌프를 사용하는 혼소엔진에서 노즐특성에 따른 경유 분사특성 측정

  • 조승환 (인하대학교 기계공학과 대학원) ;
  • 유승헌 (인하대학교 기계공학과 대학원) ;
  • 이범호 (인하대학교 기계공학과 대학원) ;
  • 김동현 (인하대학교 기계공학과 대학원) ;
  • 이대엽 (인하대학교 기계공학과)
  • Received : 2012.04.27
  • Accepted : 2012.06.13
  • Published : 2012.06.30
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Abstract

The characteristics of spray behavior and injected amount were studied with two types of nozzles for using in a compression ignition engine with dual fuel technology for construction machines. A penetration length of spray tends to shorten due to a decrease of injected amount of a diesel fuel with dual fuel engine application. In order to ignite the gaseous fuel premixed with air during intake process, a diesel fuel, which was compression ignited, needs to penetrate somehow similar depth compared with the case of a diesel fuel-only-injection. In this work, a nozzle with reduced hole diameter and increased number of holes was tested and demonstrated that, compared to diesel 100% case, its penetration lengths are comparable to 74% and 79%, respectively, of those of 100% and 50% supply of a diesel fuel with the baseline nozzle that has four holes and 30.4% increased diameter. This will presumably enhancement the combustion in a dual fuel engine. A design suggestion was also made in this work to achieve similar penetration length of spray with diesel 100% case to prevent combustion from being deteriorated in a dual fuel engine.

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References

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