Journal of ILASS-Korea (한국분무공학회지)

Institute for Liquid Atomization and Spray Systems-Korea (한국분무공학회)
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Study on the Injection Characteristics using Injection Rate in a Direct-injection Gasoline Injector with Multi-hole

분사율을 이용한 직접 분사식 다공 가솔린 인젝터의 분사특성 연구

  • 박정현 (전남대학교 대학원 기계공학과) ;
  • 신달호 (전남대학교 대학원 기계공학과) ;
  • 박수한 (전남대학교 기계공학부)
  • Received : 2016.02.07
  • Accepted : 2016.03.10
  • Published : 2016.03.31
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Abstract

This paper presents an experimental study on the GDI injector with Bosch method. The injection characteristics, such as the injection quantity, the injection rate, the maximum velocity of the nozzle exit and the injection delay were studied through the change of the injection pressure, the tube pressure and energizing duration in injection rate measurement device using nheptane. The injection quantity is increased by increasing injection pressure, decreasing tube pressure or increasing energizing duration. As the difference of the injection quantity changed, the shape of injection rate was moved with a constant form. The maximum velocity of the nozzle exit showed a tendency to increase as the injection pressure is increased. However, tube pressure did not affect. Overall, it was confirmed that the closing delay is longer than the opening delay in all conditions. As the injection pressure increased, the result has a tendency to decrease the closing delay, it did not affect the opening delay. Reduction of the closing delay showed the reduction of the injection duration. the tube pressure and energizing duration did not affect the injection delay (opening delay, closing delay).

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References

  1. J. H. Park, S. H. Park, C. S. Lee and S. Park, "Effect of Injection Condition on the Spray Behaviors of the Multi-hole GDI Injector", Transactions of KSAE, Vol. 20, No. 2, 2012 pp. 116-122. https://doi.org/10.7467/KSAE.2012.20.2.116
  2. M. Costa, L. Allocca, A. Montanaro, U. Sorge and B. Iorio, "Multiple Injection in a Mixed Mode GDI Boosted Engine", SAE International, 2010-01-1496, 2012.
  3. M. Costa, L. Allocca, A. Montanaro and U. Sorge, "Reduction of Fuel Consumption of a GDI Engine by Split Injections", ILASS-Europe, 2011.
  4. L. Postrioti, G. Buitoni, F. C. Pesce and Ciaravino, "Zeuch method-based injection rate analysis of a common-rail system operated with advanced injection strategies", Fuel 128, 2014, pp. 188-198. https://doi.org/10.1016/j.fuel.2014.03.006
  5. N. Balasubramanian, S. Bakshi and T. N. C. Anand, "Fuel injection rate measurement of gasoline direct injection (GDI) injectors", ICLASS August 23-27, 2015.
  6. J. Lee, K. Kim, J. Kim, J. Jang and S. Park, "Comparisons of the Particle Emission Characteristics Between GDI and MPI Vehicles", Journal of ILASS-KOREA, Vol. 19, No. 4, 2014, pp.182-187. https://doi.org/10.15435/JILASSKR.2014.19.4.182
  7. W. Yinhuia, Z. Ronga, Q. Yanhongb, P. Jianfeib, L. Mengrenb, L. Jianrongb, W. Yushengb, H. Minb and S. Shijina, "The impact of fuel compositions on the particulate emissions of direct injection gasoline engine", Fuel, Vol. 166, No. 15, 2016, pp. 543-552. https://doi.org/10.1016/j.fuel.2015.11.019
  8. G. Park, S. Kang, I. Kim, C. Lim, J. Kim, Y. Cho and S. Lee, "An Experimental Study on the Spray and Lean Combustion Characteristics of Bio-entanol-Gasoline Blended Fuel of GDI", Journal of ILASS-KOREA, Vol. 19, No. 3, 2014, pp. 115-122. https://doi.org/10.15435/JILASSKR.2014.19.3.115
  9. J. Jung, H. Oh and C. Bae, "LPG Spary Characteristics in a Multi-hole Injector for Gasoline Direct Injection", Journal of ILASS-KOREA, Vol. 19, No. 1, 2014, pp. 1-8. https://doi.org/10.15435/JILASSKR.2014.19.1.001
  10. T. Lee, K. Lee, C. Lee, J. Kim and S. Baik, "Characteristics of spray pattern on injection conditions using GDI injector", KSME 99F218, 1999, pp. 116-121.
  11. W. Bosch, "The fuel rate indicator: a new measuring instrument for display of the characteristics of individual injection", SAE technical paper, SAE 660749, 1966.
  12. H. K. Suh, "Spray Atomization, Combustion and Emission Characteristics in a Compression Ignition Engine Fueled with Oxygenated Fuels", Doctoral dissertation, Graduate School of Mechanical Engineering Hanyang University, 2009.
  13. G. R. Bower and D. E. Foster, "A Comparison of the Bosch and Zuech Rate of Injection Meters", SAE Technical Paper 910724, 1991.
  14. Y. Qian, X. Wang, L. Zhu and X. Lu, "Experimental studies on combustion and emissions of RCCI (reactivity controlled compression ignition) with gasoline/n-heptane and ethanol/n-heptane as fuels", Energy 88, 2015, pp. 584-594. https://doi.org/10.1016/j.energy.2015.05.083
  15. I. S. Jo, J. H. Lee and J. W. Lee, "Analysis of Fast Injection Response Characteristics Between Solenoid and Piezo-Driven Injector", The Korean Society of Mechanical Engineers, Vol. 36, No.10, 2012, pp. 971-977.
  16. B. Jeon, "A Study on Measurement of Fuel Injection Rate of a GDI Injector", Master's dissertation, Seoul National University of Science And Technology, 2003.
  17. J. Chung, N. Kim, C. Lim and D. Kim, "A Study on Injection Rate Characteristics of a Diesel Injector", Journal of ILASS-KOREA, Vol. 20, No. 4, 2015, pp. 217-222. https://doi.org/10.15435/JILASSKR.2015.20.4.217
  18. H. M. Kim, J. W. Chung and K. H. Lee, "A Study on the Characteristics of Injection-rate at Different Injection Conditions in a Common-rail Diesel Injector", Journal of ILASS-KOREA, Vol. 12, No. 3, 2007, pp. 166-171.