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Effect of Air-Fuel Mixture Homogenisation and Exhaust Gas Recirculation on Formation of Nitrogen Oxides and Soot in a Diesel Combustion Chamber

Authors: Kavtaradze R.Z., Bakhramov E.V. Published: 09.04.2018
Published in issue: #2(119)/2018  

DOI: 10.18698/0236-3941-2018-2-44-61

 
Category: Power, Metallurgic and Chemical Engineering | Chapter: Heat Engines  
Keywords: diesel, 3D simulation, partially homogeneous combustion, exhaust gas recirculation, formation of nitrogen oxides and soot

We present the results of investigating work cycles of a high-speed diesel obtained by means of using a 3D model that considers formation kinetics for nitrogen oxides and soot, said model validated through experimental data. We analysed various work cycle concepts: the stock (basic) option featuring no exhaust gas recirculation, as well as a number of alternative ones: a modified stock one with added recirculation and altered injector nozzle design, and two options featuring partially homogeneous combustion involving fivefold fuel injection. We performed a comparative analysis of environmental performance and performance characteristics of the work cycle options under study, which makes it possible to evaluate their potential

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