International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395 -0056
Volume: 04 Issue: 03 | Mar -2017
p-ISSN: 2395-0072
www.irjet.net
Design & Thermal Analysis of I.C. Engine Poppet Valves using Solidworks and FEA Ch. Mani Kumar1 P. Rajendra Babu2 1,2Asst.
Professor, Dept. of Mechanical Engineering, Sasi Institute of Technology and Engineering, AP, India
---------------------------------------------------------------------***--------------------------------------------------------------------Sagar.S Deshpande, et al (2014) Analyzed the effect of Abstract - Intake and exhaust valves in I.C. engines are called as poppet valves. These valves are operated by valve mechanism. When these valves are exposed to the heat thermal stresses are developed so that thermal analysis is very important to predicting and preventing failures in valves. This paper aims to model and simulates the thermal analysis on poppet valves applications of 99.3cc. Modeling of the valves was done in the solidworks and thermal analysis was carried out in the ANSYS. In thermal analysis determined directional heat flux, total heat flux and temperature. Here used three materials for each valves and suggested best material for each valves on basis of thermal point of view.
Keywords: Inlet valve, Exhaust valve, Composite materials, Ceramics, Solidworks, and FEA.
I.
INTRODUCTION
The valves used in internal combustion engines are of the three types 1. Poppet or mushroom valve 2. Rotary valve 3. Sleeve valve Out of these three valves, poppet valve is very frequently used. It possesses certain advantages over the other valve types because of which it is extensively used in the automotive engines. The advantages are; 1. Simplicity of construction 2. Self-centering. 3. Free to rotate about the stem to the new position. 4. Maintenance of sealing efficiency is relatively easier. Sanoj.T et al (2014) analyzed the stress induced in a valve due to high thermal gradient and high pressure inside the combustion chamber. In the first stage of analysis the temperature distribution across the valve was determined. In the second stage found displacement [1]. Deepak Bhargav et al (2016) they evaluated for uncoated and coated engine valve with and without the application of bond coat. From the results decrease in heat flux, mechanical stress and total deformation the with coated engine valve with bond coat while increased in stress were observed. Bond coat gave better wear and corrosion resistance [2]. Š 2017, IRJET
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Impact Factor value: 5.181
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varied materials and geometric parameters on mechanical properties of poppet engine valve to improve its performance over life and fatigue life using Ansys software [1]. B Seshagiri Rao et al (2014) they had designed the exhaust valve for four wheeler petrol engine using theoretical calculations. 3D model and transient thermal analysis is to be done on the exhaust valve when valve is open and closed. Study state condition is attained at 5000 cycles at the time of when valve is closed is 127.651 seconds valve is opened 127.659 seconds. The material was used for exhaust valve is EN52 steel [3]. Karan Soni et al (2015) they conclude valve design can be optimized to reduce its weight, without affecting permissible stress and deformation values. Due to reduction in strength improves the valve strength [4].
II. DESIGN CONSIDERATIONS II.I Specifications Engine specification: 1 2 3 4 5 6 7 8
Make Model Displacement Bore &stroke Compression ratio Swept Volume Clearance Volume Theoretical Efficiency
TVS Luna 97.22 cc 50 x 49.5 mm 8.8 : 1 97193.02272 mmÂł 12460.64394 mmÂł 58.1
Exhaust valve dimensions Diameter of the valve= 10.4mm Distance between the groove= 9.8mm Base diameter= 23.2mm Diameter above the base=9.8mm Total length of the valve=66.4mm Length of the stem=47.2mm Thickness of valve disc=2.4mm Inlet valve dimensions Diameter of the valve= 10.2mm ISO 9001:2008 Certified Journal
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