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 & Structural Analysis of Poppet Valves for TVS Luna Bike P. Rajendra Babu1 Ch. Mani Kumar2 1,2Asst.
Professor, Dept. of Mechanical Engineering, Sasi Institute of Technology and Engineering, AP, India
---------------------------------------------------------------------***---------------------------------------------------------------------
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 load stress and strains are developed so that Stress and strain analysis is very important to predicting and preventing failures in structures. This paper aims to model and simulate the stresses and strain analysis of poppet valves applications of 99.3cc. Modeling was done in the solidworks and structural was carried out in the ANSYS.
Keywords: Inlet valve, Exhaust valve, Composite materials, Ceramics, Solidworks, FEA.
I.
INTRODUCTION
drawings is drafted from the calculations and 3D model and transient thermal analysis is to be done on the exhaust valve when valve is open and closed. Analysis is done in ANSYS. Analysis will be conduct when the study state condition is attained. Study state condition is attained at 5000 cycles at the time of when valve is closed is 127.651 sec valve is opened 127.659 sec. The material 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
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.
Sagar.S Deshpande, et.al.(2014) Analyzed the effect of 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]. Sanoj.T, et. al.(2012) 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 [2].
II.I Specifications Engine specification: 1 Displacement 2 Bore &stroke 3 Compression ratio
97.22 cc 50 x 49.5 mm 8.8 : 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 Distance between the groove= 9.8mm Base diameter= 20mm Diameter above the base=9.6mm Total length of the valve=67mm Length of the stem=42mm Thickness of valve disc=2mm
B Seshagiri Rao, et al.(2014) They had designed the exhaust valve for a four wheeler petrol engine using theoretical calculations. Manufacturing process that is 2D Š 2017, IRJET
|
Impact Factor value: 5.181
|
ISO 9001:2008 Certified Journal
|
Page 1560