Partial Homogenization Effect of the Combustion Process on the Environmental Performance of Diesel

The purpose of the research was to examine the changes in the local values of turbulent kinetic energy and temperature, as well as their impact on the local formation of nitrogen oxides and soot in diesel engine combustion chamber in the case of the base (two-fold (split) fuel injection) and alternative (different variants of five-fold fuel injection) fuel injection characteristics. We defined the optimum parameters of the fuel injection, resulting in a partially homogeneous combustion in part load mode. We found that it is appropriate to combine an alternative process of partially homogeneous combustion optimized in part load modes, with the conventional diesel combustion in normal engine duty.

References

[1] Kavtaradze R.Z. Teoriya porshnevykh dvigateley. Spets. glavy [Theory of piston engines. special chapters]. Moscow, MGTU im. N.E. Baumana Publ., 2008. 720 p.

[2] Merker G., Schwarz Ch., Teichmann R. (Hrsg.). Grundlagen Verbrennungsmotoren. Funktionsweise, Simulation, Messtechnik. 6. Auflage. Vieweg Teubner-Verlag/Springer Fach-medien, Wiesbaden GmbH. 2014. 795 s.

[3] Kavtaradze R.Z., Onishchenko D.O., Zelentsov A.A. Trekhmernoe modelirovanie nestatsionarnykh teplofizicheskikh protsessov v porshnevykh dvigatelyakh [Three-dimensional modeling of unsteady thermal processes in piston engines]. Moscow, MGTU im. N.E. Baumana Publ., 2012. 85 p.

[4] FIRE. Users Manual Version 2014. AVL List GmbH, Graz. Austria, 2014.

[5] Schneemann A., Emmrich Th., Bach E. Oberflachentemperaturmessung und lokale Warmeubergang. Informationstagung Motoren. Herbst 2006, Wurzburg. Heft R 535, 2006, ss. 281-305.

[6] Muller E., WeiskirchCh., Bach E., Emmrich Th., Bach E., Schneemann A. Homogene dieselverbrennung - verfahren zur emissionsreduzierung. Teil 2: Untersuchungen am Nfz-Motor. MTZ, 2006, no. 11, ss. 906-917.

[7] Kavtaradze R.Z., Natriashvili T.M., Zelentsov A.A. Ignition delay and emission of the noxious substances in double-fuel engines working on the natural gas and syngases. Chahter 15 (pp. 109-120) in the Book: Innovative methods for improvement of technical, economic and ecological efficiency of motor cars (ISBN: 978-1-63463-671-1). N. Y., NOVA-Publishers., 2015. 138 p.

[8] Kavtaradze R.Z., Zeilinger R., Zitzler G. Ignition delay in a diesel engine utilizing different fuels. High Temperature, 2005, vol. 43, no. 6, pp. 951-960.

[9] Kavtaradze R., Zelentsov A., Gladyshev S., Kavtaradze Z., Onishchenko D. Heat insulating effect of soot deposit on local transient heat transfer in diesel engine combustion chamber. SAE International Paper, 2012, no. 2012-01-1217. 12 p.

[10] Kavtaradze R.Z., Gaivoronskii A.I., Fedorov V.A., Onishchenko D.O., Shibanov A.V. Calculation of radiative-convective heat transfer in the combustor of diesel engine. High Temperature, 2007, vol. 45, no. 5, pp. 673-680.

[11] Kavtaradze R.Z., Zelentsov A.A. Influence of intake port shape on effective and ecological parameters of middle-speed diesel engine. Vestn. Mosk. Gos. Tekh. Univ. im. N.E. Baumana, Mashinostr. [Herald of the Bauman Moscow State Tech. Univ., Mech. Eng.], 2015, no. 6, pp. 59-73 (in Russ.). DOI: 10.18698/0236-3941-2015-6-59-73