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Autors: Punov, P. B., Gechev, T., Mihalkov, S. L., Podevin, P., Barta, D.
Title: Experimental study of multiple pilot injection strategy in an automotive direct injection diesel engine
Keywords: diesel engine, pilot injection, rate of heat release, injection strategy

Abstract: The pilot injection strategy is a widely used approach for reducing the noise of the combustion process in direct injection diesel engines. In the last generation of automotive diesel engines up to several pilot injections could occur to better control the rate of heat release (ROHR) in the cylinder as well as the pollutant formation. However, determination of the timing and duration for each pilot injection needs to be precisely optimised. In this paper an experimental study of the pilot injection strategy was conducted on a direct injection diesel engine. Single and double pilot injection strategy was studied. The engine rated power is 100 kW at 4000 rpm while the rated torque is 320 Nm at 2000 rpm. An engine operating point determined by the rotation speed of 1400 rpm and torque of 100 Nm was chosen. The pilot and pre-injection timing was widely varied in order to study the influence on the combustion process as well as on the fuel consumption.


  1. A. Clenci, Real Driving Emissions (RDE): enjeux et défis, Conférences CNAM-SIA-LMP-ENSPM, (2018)
  2. Punov, P. B, 2015,BulTrans-2015: Research the fuel injection characteristics of a common-rail solenoid injector, Sozopol, Bulgaria, pp. 153-158
  3. G. Dober, S. Tullis, G. Greeves, N. Milovanovic, M. Hardy, S. Zuelch, The Impact of Injection Strategies on Emissions Reduction and Power Output of Future Diesel Engines, SAE Conference Proceedings, 2008-01-0941, (2008)
  4. K. Mathivanan, J. M. Mallikarjuna, A. Ramesh, Influence of multiple fuel injection strategies on performance and combustion characteristics of a diesel fuelled HCCI engine – An experimental investigation, Experimental Thermal and Fluid Science, 77, 337-346, (2016)
  5. R. Finesso, E. Spessa, Ignition delay prediction of multiple injections in diesel engines, Fuel, 119, 170-190, (2014)
  6. Punov, P. B, Milkov, N., Perilhon, C., Podevin, P., Evtimov, T., 2017,CAR 2017: Study on the combustion process in a modern diesel engine controlled by pre-injection strategy, Pitesti, Romania, pp.
  7. Punov, P. B, Evtimov, T. P, 2015,International Scientific Journal Machines, Technologies, Materials: Combustion optimization in a modern diesel engine by means of pre-injection strategy, Sofia, Bulgaria, pp. 41-44
  8. X. Li, W. Yang, L. Zhao, F. Liu, The influence of pilot-main injection matching on DI diesel engine combustion using an endoscopic visualization system, Fuel, 188, 575-585, (2017)
  9. S. Park, H. J. Kim, D. H. Shin, J. Lee, Effects of various split injection strategies on combustion and emissions characteristics in a single-cylinder diesel engine, Applied Thermal Engineering, 140, pp. 422-431, (2018)
  10. M. Xu, W. Cheng, Z. Li, H. Zhang, T. An, Z. Meng, Pre-injection strategy for pilot diesel compression ignition natural gas engine, Applied Energy, 179, 1185-1193, (2016)
  11. H.G. How, H.H. Masjuki, M.A. Kalam, Y.H. Teoh, Influence of injection timing and split injection strategies on performance, emissions, and combustion characteristics of diesel engine fueled with biodiesel blended fuels, Fuel, 213, 106-114, (2018)
  12. X. Li, C. Guan, Y. Luo, Z. Huang, Effect of multiple-injection strategies on diesel engine exhaust particle size and nanostructure, Journal of Aerosol Science, 89, 69-76, (2015)
  13. X. Li, H. Zhou, L. M. Zhao, L. Su, H. Xu, F. Liu, Effect of split injections coupled with swirl on combustion performance in DI diesel engines, Energy Conversion and Management, 129, 180-188, (2016)
  14. F. Millo, P. Arya, F. Mallamo, Optimization of automotive diesel engine calibration using genetic algorithm techniques, Energy, 158, 807-819, (2018)

MATEC Web of Conferences, BulTrans-2018, vol. 234, 2018, Bulgaria, EDP Sciences, ISSN 2261236X

Copyright EDP Sciences

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Вид: публикация в национален форум с межд. уч., публикация в реферирано издание, индексирана в Scopus

Въведена от: доц. д-р Пламен Борисов Пунов