Design and Analysis on a Ceramic Coated Diesel Engine Piston using ANSYS

Design and Analysis on a Ceramic Coated Diesel Engine Piston using ANSYS
Authors:NAGARJUNA.JANA, K.KOMALI

Abstract: In a conventional internal combustion engine the small portion of the total energy produced is converted to useful work. More than half of this energy is expelled from the system through friction losses, cooling the engine components, exhaust, etc. The sum of these losses is termed as energy loss for the engine. The most effective way of increasing the percentage of useful work is to reduce the energy loss. One way of reducing the energy loss or increasing the efficiency of the engine is by using Thermal Barrier Coatings (TBC) on the various elements of the combustion chamber like valves, piston, cylinder surfaces, and rings. Ceramic materials are most commonly used as thermal barrier coating materials. To enhance the thermal, mechanical, and corrosion strengths of automotive parts, ceramic materials are applied, either as whole part or as coatings. Making the whole part from ceramics has many drawbacks, like brittleness, manufacturing difficulty etc. Instead of this, coating the metallic parts of the combustion chamber with ceramic gives the design flexibility. Coating of these elements by a ceramic with low thermal conductivity keeps the heat in the chamber and hence increases the temperature. The higher temperature in the chamber increases the efficiency of the engine, but requires higher temperature components. Ceramics materials have high temperature resistance and offer an excellent coating surface to reduce the amount of degradation and to extend the life. The temperature distribution in piston is crucial parameter influence the thermal stresses and deformations. In the present work the temperature distribution of piston with or without coating is carried out by using finite element method. The 3-D model of the piston is generated in the PRO/E and the analysis is carried out in the commercial software ANSYS. 

Keywords: Modeling Of Piston, Ansys, Structural Analysis, Coupled-Field Analysis, Thermal Analysis, Thermal Analysis of Piston. 

INTRODUCTION 

       The increasing trends and demands in the automotive world, there is always tug and tie between the designer and customer. To cope with the existing competition in the modern times there is always need for great improvement in compactability of the engine models. In this chapter the brief introduction about Internal Combustion engine (IC engine) is presented. The various components, type and recent advancements in IC engine are also presented in this chapter. Recently the performance of IC engines is enhanced by using various thermal barrier coatings. The importance of various coatings in IC engines is also presented.

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