International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395 -0056
Volume: 04 Issue: 02| Jan -2017
p-ISSN: 2395-0072
www.irjet.net
Investigation Of IC Engine Part With Coating A Review Ravi S Modi1, Maulik Modi2, Dr. Tushar M Patel 3 1ME
scholar, Mechanical Department,LDRP-ITR,Gandhinagar,India. Professor,Mechanical Department,LDRP-ITR,Gandhinagar,India 3Professor,Mechanical Department, LDRP-ITR, Gandhinagar,India ---------------------------------------------------------------------***--------------------------------------------------------------------2Assistant
Abstract - Piston is most important part in automobile engine in which it helps to convert the chemical energy liberated by the combustion of fuel into useful mechanical power. The performance ic engine is depends on piston size and working in dynamic conditions. So, the piston is a heart of the ic engine. The internal combustion engines piston made of Aluminum alloy, stainless steel, cast iron etc. When the combustion of fuel charge takes place inside combustion chamber, high pressure and high temperature are developed due to combustion of the fuel. Because of high loads, the piston is subjected to high thermal stress and mechanical stresses. If these stresses exceed the designed values, failure of piston may take place. Temperature, operating gas pressure and material properties of piston are the parameter used for this work. The analysis shows that piston may be damaged or broken during the operating conditions due to high temperature and structural stress acting on the top surface of the piston. The main of aim of this work is to study various researches done in past to reduce the stress concentration on the head of the piston to predict the higher stress and critical region on the component by using FEM technique. The FEM performed by using ANSYS simulation.
The temperature of the top surface of the piston is changing, during the intake process it is the lowest, and during the exhausting it is the biggest. Therefore, the thermal stress is not constant. Because of high speed and at high loads on the engine, the piston is subjected to high structural stress and thermal stress. If these stresses exceed the designed values, failure of piston may take place. Intensity of these stresses should be reduced to have safe allowable limits. This review introduces an analytical study and analysis of the thermal effects and structural stresses on engine piston.
1.1 Piston Design The piston is designed according to the procedure and specification which are given in machine design and data hand books. The dimensions are calculated in terms of SI Units. The pressure applied on piston head, temperatures of various areas of the piston, heat flow, stresses, strains, length, diameter of piston and hole, thicknesses, etc., parameters are taken into consideration. [1]
1.2 Thermal Barrier Coating
Key Words: IC Engine, Coating material, Piston, FEA
In internal combustion engine, 55% energy is west in coolant, exhaust and friction so only 45% of energy converted into useful work. TBC is the advance coating material technique which is applied to the metallic surface to operate at higher temperature range and provides the higher thermal efficiency of the IC engine and reduced emission. Ceramic have wear characteristic than other materials as well as lower heat rejection from the combustion chamber to thermally insulated component.
1.INTRODUCTION Automobile components are in great demand and use of automobiles is increased due to improved performance and the cost of these components is reduced. The most used drive of Motorcycles, primer movers, automobiles, ships and agricultural machines are still the internal-combustion, piston engines. The piston has an important function of the driving chain mechanism. It's main function is to lock one side of the cylinder of the ic engine, to create the changing volume, required for working. The thermal energy liberated by the combustion of fuel, sparked with the ignition plugs converts into mechanical energy as the piston moves in the cylinder. The gas-energy takes effect on the surface of the piston and makes it move on a straight line. The energy liberated from the gas-pressure depends on the diameter of the cylinder and the top pressure of burning fuel. This combustion process makes noise and quiver during the engine works. During this combustion process, the piston is subjected not just thermal energy but mechanically as well. Top surface of the piston is touched directly with hot gas and the flame front. the piston is taxed by the thermal stress which is heat transfer, and just partly heat radiation.
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2. LITREATURE REVIEW 1. Ch. Venkatarajam et al (2013) [1] have studied that the efficiency is improve by reduced the weight of the piston. The result showed that the total volume of the piston is reduced by 24%, Vonmisses stress is increased by 16% and deflection is increased but all the parameter is well with in piston design consideration. The FEA analysis carried out for ceramic coated diesel engine piston and the result indicate that the maximum stress has changed from 63.019 MPa to 74.95 MPa. 2. Xiqun Lu et al (2013) [2] have studied the boundary condition for numerical simulation is verified with experiment result and applied to forecast the temperature variation of a new piston outline which had minor change of piston head design and one less ring scheme. Analytical
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