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Trends in Machine design

AUTOMOTIVE VALVE-TRAIN COMPONENTS DURABILITY ANALYSIS USING FINITE ELEMENT METHOD APPROACH: A REVIEW

  1. Anuradha Jagdish Thakare
  2. Ashok Keche

Abstract

An internal combustion (IC) engine valves is poppet valves used to control the flow of air /fuel mixture in the engine and escape of exhaust combustible gases from the engine using intake and exhaust valves respectively. Inside an engine the combustion process majorly depends on timing of Air/Fuel mixture induction and release of gases. Both Intake and Exhaust valve also form a seal between the working space inside the cylinder against the manifolds by continually opening and closing of valve according to valve timing diagram. During the combustion process, the pressure pushes the valve against the insert, sealing the chamber and preventing the leaks that are loaded by spring forces and subjected to thermal loading due to high temperature and pressure which affect the durability of the engine. In this paper, general mechanism of valve-train and its working principle are reviewed and discussed. Valve-train component exposed to various mechanical and thermal failure modes due to high temperature, thus it is important to evaluate engine valve durability using engineering analysis technique which gives a complete assessment of valve-train components. Finite Element Analysis (FEM) analysis is a technique fully capable and various modeling and simulation software such as Ansys, ABAQUS CAE, CATIA are also discussed in this paper.

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