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Design of Stationary IC Engine’s Exhaust Valve and Optimization Based on Finite Element Analysis

Publication Date : 03/05/2016

Author(s) :

Snehal S.Gawale , Prof.M.A.Ahire , Dr.S.N.Shelke.

Conference Name :
International Conference on Recent Trends in Engineering and Technology

Abstract :

Exhaust valves are the precision engine components. Purpose of the exhaust valves is to send the exhaust gases out of the cylinder. This process is essential for the smooth-running of internal combustion engine. If the exhaust valve is not designed properly then it fails and the following stroke will begin to mix with exhaust fumes rather than clean air. This may be inadequate for proper combustion and it leads to poor running conditions. Valves are subjected to spring force and thermal loading due to high temperature and pressure inside the cylinder. During the operation of internal combustion engine, the axial stresses are produced in exhaust valve due to cylinder gas pressure (compressive only) and inertia force arising on the account of valve spring action. At the same time it is subjected to overheating due to very high temperature. The result of which maximum stresses are developed at the fillet section of exhaust valve. In the proposed work, stress concentration on valve can be further reduced using suitable filet radius through optimization based on finite element analysis and experimental validation on UTM to increase working life of exhaust valve. Design of valve is done based on given specifications with study of valves and its failure modes. In the next part of work modelling, analysis of valve is to be done with optimization of valve fillet radius.

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