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An Experimental Study on the Spray and Lean Combustion Characteristics of Bio-enthanol-Gasoline Blended Fuel of GDI

직접분사식 바이오에탄올-가솔린 혼합연료의 분무 및 희박연소 특성에 관한 실험적 연구

  • 박기영 (국민대학교 자동차공학 전문대학원) ;
  • 강석호 (국민대학교 자동차공학 전문대학원) ;
  • 김인구 (국민대학교 자동차공학 전문대학원) ;
  • 임철수 (국립환경과학원 지구환경연구과) ;
  • 김재만 (국민대학교 자동차공학과) ;
  • 조용석 (국민대학교 자동차공학과) ;
  • 이성욱 (국민대학교 자동차공학과)
  • Received : 2014.07.01
  • Accepted : 2014.09.11
  • Published : 2014.09.30

Abstract

As a demand for an automobile increases, air pollution and a problem of the energy resources come to the fore in the world. Consequently, governments of every country established ordinances for green-house gas reduction and improvement of air pollution problem. Especially, as international oil price increases, engine using clean energy are being developed competitively with alternative transportation energy sources development policy as the center. Bio ethanol, one of the renewable energy produced from biomass, gained spotlight for transportation energy sources. Studies are in progress to improve fuel supply methods and combustion methods which are key features, one of the engine technologies. DI(Direct Injection), which can reduce fuel consumption rate by injecting fuel directly into the cylinder, is being studied for Green-house gas reduction and fuel economy enhancement at SI(Spark Ignition). GDI(Galoine Direct Injection) has an advantage to meet the regulations for fuel efficiency and $CO_2$ emissions. However it produces increased number of ultrafine particles, that yet received attention in the existing port-injection system, and NOX. As fuel is injected into the cylinder with high-pressure, a proper injection strategy is required by characteristics of a fuel. Especially, when alcohol type fuel is considered. In this study, we tried to get a base data bio-ethanol mixture in GDI, and combustion for optimization. We set fuel mixture rate and fuel injection pressure as parameters and took a picture with a high speed camera after gasoline-ethanol mixture fuel was injected into a constant volume combustion chamber. We figured out spraying characteristic according to parameters. Also, we determine combustion characteristics by measuring emissions and analyzing combustion.

Keywords

References

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Cited by

  1. An Experimental Study on Spray Characteristics of Directly Injected Bio-Ethanol-Gasoline Blended Fuel By Varying Fuel Temperature vol.25, pp.6, 2014, https://doi.org/10.7316/KHNES.2014.25.6.636
  2. Study on the Injection Characteristics using Injection Rate in a Direct-injection Gasoline Injector with Multi-hole vol.21, pp.1, 2016, https://doi.org/10.15435/JILASSKR.2016.21.1.20
  3. An experimental study on spray and combustion characteristics based on fuel temperature of direct injection bio-ethanol-gasoline blending fuel vol.30, pp.11, 2016, https://doi.org/10.1007/s12206-016-1042-4