An FEA material strength modelling of a coated engine piston. (2021)

• Record Type: Journal Article
• Authors: Roychoudhury, Arka; Banerjee, Ayan; Mishra, Prakash Chandra; Khoshnaw, Fuad
• Is Part Of: Materials today. Volume 44:Part 1(2021)
• Page Start: 1320
• Page End: 1325
• Publication Date: 2021
• Subjects: Piston -- Coating -- Crown -- Structural strength -- TiSiCN -- Material strength modelling; Materials science -- Congresses -- Periodicals; 620.1
• DOI: 10.1016/j.matpr.2020.11.387
• Languages: English
• ISSNs: 2214-7853

Abstract

Abstract: Engine pistons are subjected to high gas pressure force on the crown. Such compressive force, helps the piston to gain inertia for reciprocation. But suitable materials are required to sustain higher temperature(500 °C) and pressure (120 bar) environments in engine. Aluminum based alloy or cast iron are selected for such application. To enhance material life, sometimes coating is done to reduce the effect of thermal and stress behavior. This study aims to investigate a combination effect of coating and geometrical modification on the material strength of an engine piston. A piston head, with a bowl shape was analyzed by finite element technique, considering the whole piston is coated with TiSiCN thin layer. The analysis was developed to predict the material strength of two types of pistons: uncoated flat crown and a TiSiCN coated bowl on the crown. A comparative analysis was carried out to summarize the benefits of such modifications in a piston. The result showed a 33.96% reduction on stress level and 11.9% reduction in deformation achieved due to such coating process.