Influence of intake port shape on effective and ecological parameters of middle-speed diesel engine

Authors: Kavtaradze R.Z., Zelentsov A.A. Published: 21.12.2015
Published in issue: #6(105)/2015  

DOI: 10.18698/0236-3941-2015-6-59-73

Category: Power Engineering | Chapter: Heat Engines  
Keywords: middle-speed diesel engine, mathematical modeling, swirl number, effective parameters

The paper presents the numerical analysis of swirl motion generation inside the intake system of a middle-speed diesel engine. It also analyzes the processes of both mixture formation and air-fuel mixture combustion in the combustion chamber. The mathematical model is based on the three-dimensional non-stationary equations of momentum, energy, motion, mass transfer, and consistency of reacting substances in the Reynolds form with the addition of k-ζ-f turbulence model and the Coherent Flame Model (CFM), which are used for estimating the combustion chemical reaction rate. The authors solved the problem as follows: at first, an intake port shape with a higher swirl number was developed, and then effective and ecological parameters of the diesel engine with a modified shape of the intake ports in the cylinder head were calculated.


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