An experimental study on the injection and spray characteristics of butanol

부탄올의 분사 및 분무특성에 관한 실험적 연구

  • Received : 2016.12.28
  • Accepted : 2017.01.26
  • Published : 2017.02.28


Butanol has an ability to improve the ignition quality due to its lower latent heat of vaporization; it has an advantage to reduce a volume of a fuel tank because its energy density is higher than that of ethanol. Also, butanol-diesel oil blending quality is good because butanol has an effect to prevent the phase-separation between two fuels. Even if the blended oil contains water, it can reduce the corrosion of the fuel line. Thus, it is possible to use butanol-diesel oil blended fuel in diesel engine without modification, and it may reduce the environment pollution due to NOx and particulate and the consumption of diesel oil. Therefore, some studies are being advanced whether butanol is adequate as an alternative fuel for diesel engines, and the results of the combustion and exhaust gas emission characteristics are being presented. Though the injection and spray characteristics of butanol are more important in diesel combustion, the has not yet dealt with the matter. In this study, the influence in which differences of physical properties between butanol and diesel oil may affect the injection and spray characteristics such as injection rate, penetration, spray cone angle, spray velocity and process of spray development were examined by using CRDI system, injection rate measuring device and spray visualization system. The results exhibited that the injection and macroscopic spray characteristics of two fuels were nearly the same.


Injection rate;Penetration;Spray angle;Spray velocity;Process of spray development


  1. Kamimoto T and Kobayashi H. 1991. Combustion Processes in Diesel Engines. Prog. Energy Combustion Science 17, 163-189.
  2. Ko JS and Lee CS. 2014. Combustion and Emission Characteristics of Bioethanol and Biobutanol in a Gasoline Direct Injection Engine. KSAE 2014 Conference Proceeding, 295-297.
  3. Kim DH. 2010. The Status and Outlook for Biobutanol Technology. Auto Journal_2010.8, 36-44.
  4. Yun HT, Choi KB and Lee CS. 2015. Effect of pilot injection on combustion and emission characteristics in a direct injection diesel engine fueled with biobutanol blended diesel fuels. KSAE 2015 Conference Proceeding, 205-208.
  5. Jiang XL, Choi BC, Lee CH and Lee CH. 2014. Particulate matter Exhaust Emission Characteristics of CRDI Diesel Engine with Butanol-Diesel Blended Fuel. KSAE 2015 Conference Proceeding, 249-250.
  6. Kim HS, Jang YG, Lee SH, Kim TY, Kang KY and Yoon JK. 2014. A Feasibility Study of Using Diesel/Biodiesel-Pyrolysis Oil-Butanol Blends in a Diesel Engine. Transactions of KSAE 22(5), 116-125. (DOI:10.7467/KSAE.2014.22.5.116)
  7. Kim SA and Wang WG. 2013. The Fabrication and Trial Performance of Injector Driver For CRDI. Journal of KSPME 17(2), 38-45. (DOI:10.9726/kspse.2013.17.2.038)
  8. Wakuri Y, Fujii M, Amitani T and Tsuneya R. 1960. Studies on the Penetration of Fuel spray in a Diesel Engine. Bulletin of JSME 3(9), 123-130.
  9. Reitz RD and Bracco FD. 1979. On the Dependence of Spray Angle and other Spray Parameters on Nozzle Design and Operating Conditions. SAE paper, 790494.
  10. Yeh CN, Kosaka H and Kamimoto T. 1993. Fluorescence/Scattering Image Technique for Particle Sizing in Unsteady Diesel Spray. Transactions of JSME (B 499), 4008-4013.
  11. Kang JS and Bae CS. 2003. The Structure of Break-up Zone of Diesel Spray from a VCO Nozzle. KSAE conference proceeding, 168-173.
  12. Borman GL and Ragland KW. 1998. Combustion Engineering. McGraw-Hill, Singapore, 311.