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COMPUTATIONAL ANALYSIS OF INTAKE MANIFOLD DEISGN AND EXPERIMENTAL INVESTIGATION ON DIESEL ENGINE FOR LCV

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Author(s): S. KARTHIKEYAN, | R. HARIGANESH | M.SATHYANDAN | S. KRISHNAN, | P. VADIVEL, | D.VAMSIDHAR

Journal: International Journal of Engineering Science and Technology
ISSN 0975-5462

Volume: 3;
Issue: 3;
Start page: 2359;
Date: 2011;
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Keywords: Intake manifold | AVL boost | smoke.

ABSTRACT
It is quite familiar that a duly designed intake manifold is essential for the optimal performance of an internal combustion engine. Air flow inside the intake manifold is one of the important factors, which governs the engine performance and emissions. Hence the flow phenomenon inside the intake manifold should be fully optimized to produce more engine power with better combustion, this further reduces the emission. In this paper, during the new engine development the pressure waves for the intake manifold is simulated using 1D AVL-Boost software, to study the internal air flow aracteristic for the 3-cylinder diesel engine during transient conditions. Based on the 1D simulation results, the intake manifold design is optimized using 3D CFD software under steady state ondition. As a result of this 3D CFD analysis, the disproportionate flow of air inside the runners is identified, which is also experimentally investigated by the pressure inside the runner. Further the engine smoke level is experimentally tested using engine test bench for the initial (stage-I) and optimized (stage-II) manifold. Further from the experimental investigation it is found that the smoke level is reduced for optimized manifold design.
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