Open AccessInvestigation of the kinetic mechanism of nitrogen oxidation in an automotive engine with stratified mixing
Author(s) -
В. М. Фомин,
А S Platunov
Publication year - 2011
Publication title -
izvestiâ mgtu "mami"
Language(s) - English
Resource type - Journals
eISSN - 2949-1428
pISSN - 2074-0530
DOI - 10.17816/2074-0530-69887
Subject(s) - combustion , gasoline , laminar flow , nitrogen oxide , nox , homogeneous , nitrogen oxides , kinetic energy , combustion chamber , materials science , automotive industry , nitrogen , mixing (physics) , internal combustion engine , petrol engine , laminar flame speed , automotive engineering , mechanics , chemistry , thermodynamics , diffusion flame , waste management , physics , engineering , combustor , organic chemistry , quantum mechanics
The authors proposed the method of calculation, which allows to determine the local formation of nitrogen oxides in the combustion chamber of automotive gasoline engine with internal mixture formation for the modes with laminar organization of the charge. Heterogeneity of sharply stratified mixture the workspace of the combustion chamber is divided on the path of the flame propagation into areas with different (localized) air-fuel ratio. For Volkswagen AUX-type engine test calculations conducted, which results revealed that outcome of nitrogen oxides from the combustion of a stratified mixture is 2,2 times reduced in comparison with the traditional version of uniform homogeneous mixture. Discrepancy between calculated and experimental results does not exceed 8%, thus confirming the adequacy of a satisfactory calculation method.