FATIGUE ANALYSIS AND LIFE ESTIMATON OF AN OUTLET VALVE FOR DIESEL ENGINE
Author(s):
Guguloth Ravi, Banoth Shankar, Thokala Vikram
Keywords:
Poppet , mushroom valve , Sleeve valve , Rotary valve, EN 24, titanium and nickel chromium alloy steel, Fatigue analysis
Abstract
the valves used in the IC engines are of three types: Poppet or mushroom valve or Sleeve valve or Rotary valve. Of these three types, Poppet valve is most commonly used. Since both the inlet and exhaust valves are subjected to high temperatures of 1930°C to 2200°C during the power stroke, therefore, it is necessary that the materials of the valves should withstand these temperatures. In this project, we have taken the materials EN 24, titanium and nickel chromium alloy steel instead of steel.The aim of the project is to design exhaust valve using the theoretical calculations for a 150cc engine. 2D drawings of the valve are drafted and 3D model is drawn in parametric software Pro/Engineer. To validate the strength of the valve which is designed according to calculations, structural analysis is done on them by applying forces. In structural analysis the ultimate stress limit for the design is found. Modal analysis is done on the valve to validate the mode shapes for number of modes. Frequency analysis is done to determine the natural frequencies. Fatigue analysis is also done to determine life, damage and safety factor .Analysis is done using ANSYS
Article Details
Unique Paper ID: 144329
Publication Volume & Issue: Volume 3, Issue 10
Page(s): 129 - 135
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