Design and Analysis of Piston by SiC Composite material

Abstract

In an engine the purpose of the piston is to transfer force from expanding gas in the cylinder to the crank shaft via a piston rod. Piston has to endure the cyclic gas pressure and the inertial forces at work, and this working condition may cause the fatigue damage of the piston such as piston side wear, piston head cracks and so on. Usually the pistons are made of Aluminum for lightweight, thermal conductivity. But it has poor hot strength and high coefficient of expansion makes it less suitable for high temperature applications.In this project, Aluminum Silicon Carbide (AlSiC), an aluminum matrix composite is used as an alternative for aluminium. A 3D model was made using CATIA v6 and Structural and thermal analysis was done on ANSYS 14. Compared to Aluminium, AlSiC has better abrasion resistance, creep resistance, dimensional stability, exceptionally good stiffness-to-weight and strength-to-weight ratios and better high temperature performance. Fabrication of piston using AlSiC is also easier than using Aluminium

Existing System

Proposed System

Architecture

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