Autors: Punov, P. B., Milkov, N., Perilhon, C., Podevin, P., Evtimov, T.
Title: Study on the combustion process in a modern diesel engine controlled by pre-injection strategy
Keywords: diesel engine, combustion, rate of heat release, Vibe function

Abstract: The paper aims to study the combustion process in a modern diesel engine over the engine operating map. In order to study the rate of heat release (ROHR), an automotive diesel engine was experimentally tested using the injection parameters factory defined. The experimental test was conducted over the engine operating map as the engine speed was limited to 2400 rpm. Then, an engine simulation model was developed in AVL Boost. By means of that model the ROHR was estimated and approximated by means of double Vibe function. In all engine operating points we found two peaks at the ROHR. The first is a result of the pilot injection as the second corresponds to the main injection. There was not found an overlap between both peaks. It was found that the first peak of ROHR occurs closely before top dead center (BTDC) at partial load than full load. The ROHR peak as a result of main injection begins from 4°BTDC to 18°ATDC. It starts earlier with increasing engine speed and load.


  1. Lakshminarayanan, P. A. and Aghav, Y. V., Modelling Diesel Combustion: Springer, 2010
  2. Punov, P. B, 2011,BulTrans-2011: Research influence of multi-pulse pilot injection on combustion heat release and combustion proces in modern diesel engines, Созопол, Bulgaria, pp. 201-204
  3. Punov P., Evtimov T., Combustion optimization in a modern diesel engine by means of pre-injection strategy, International Journal for Science, Technics and Innovations for the Industry “Machines, Technologies and Materials (MTM)”, Issue 4, 2015, p. 41-44.
  4. Jaipuria, A. and Lakshminarayanan, P. A., Prediction of the Rate of Heat Release of Mixing-Controlled Combustion in a Common-Rail Engine with Pilot and Post Injections Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering, 2011, 225 (2), pp. 246-259
  5. Breuer C., The influence of fuel properties on the heat release in DI-diesel engines, Fuel, 1995, 74(12), pp. 1767-1771
  6. Nikolov, V., A simulation study of the influence of the relative heat release during combustion on the indicator diagram of a diesel engine International Journal of Research in Engineering and Technology, 2014, 3(9), pp. 175-179
  7. Pešić, R. B., Davinić, A. L., Taranović, D. S., Miloradović, D. M. and Petković, S. D., Experimental determination of double vibe function parameters in diesel engines with biodiesel Thermal Science, 2010, 14, pp. 197-208


CAR 2017, vol. 252, issue 1, 2017, Romania, IOP Conference Series: Materials Science and Engineering, ISSN 17578981

Copyright Institute of Physics Publishing

Full text of the publication

Цитирания (Citation/s):
1. Punov, P., Gechev, T., Mihalkov, S., Podevin, P., Barta, D., Experimental study of multiple pilot injection strategy in an automotive direct injection diesel engine, (2018), MATEC Web of Conferences, 234, art. no. 03007 - 2018 - в издания, индексирани в Scopus или Web of Science
2. Guo, G., He, Z., Lai, M.-C., Duan, X., Leng, X., Duan, L., Chen, Z., Optical experiment and Large Eddy Simulation on effects of in-nozzle stagnant air bubbles and diesel on near-nozzle spray structure variation in diesel injector, (2019), Fuel, 255, art. no. 115721 - 2019 - в издания, индексирани в Scopus или Web of Science
3. Lebedevas, S., Raslavičius, L., Prognostic assessment of the performance parameters for the industrial diesel engines operated with microalgae oil (2021) Sustainability (Switzerland), 13 (11), art. no. 6482 - 2021 - в издания, индексирани в Scopus или Web of Science
4. Pozzato, G., Rizzo, D. M., & Onori, S. (2022). Mean-value exergy modeling of internal combustion engines: Characterization of feasible operating regions. Journal of Dynamic Systems, Measurement and Control, Transactions of the ASME, 144(6) doi:10.1115/1.4053945 - 2022 - в издания, индексирани в Scopus или Web of Science

Вид: публикация в международен форум, публикация в реферирано издание, индексирана в Scopus