Strength assessment of two-stroke marine diesel engine piston rings in the mounting procedure

Vladimir, Nikola and Šestan, Ante and Ančić, Ivica and Prosinečki, Tomislav (2014) Strength assessment of two-stroke marine diesel engine piston rings in the mounting procedure. = Strength assessment of two-stroke marine diesel engine piston rings in the mounting procedure. In: Twelfth International Conference on Marine Sciences and Technologies - Black Sea 2014, 25-27.09.2014., Varna, Bugarska.

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Official URL: http://bib.irb.hr/prikazi-rad?rad=720225

Abstract

Piston rings are essential parts of all modern internal combustion engines and their properties significantly affect the engine reliability and exploitation life. Roles of a piston ring are: sealing the engine combustion chamber, minimization of the frictional losses against the cylinder liner, evenly distribution of oil along the cylinder liner and transfer of the heat from the piston. This paper deals with the strength assessment of a compression ring of a two stroke crosshead marine diesel engine in the mounting procedure. Namely, during the mounting the ring should be expanded by the appropriate device, which can cause significant bending moments and consequently plastic deformations. The aim of the paper is to examine selected available methods for the strength assessment of a ring to improve its mounting procedure. Two approaches are used to calculate the stress levels, i.e.: energy approach based on the 2nd Castigliano's theorem as well as widely used commercial FEA tool employing four-node solid elements. Based on the obtained numerical results family of curves determining allowable ring deflection with respect to the ring diameter and its width are drawn.

Item Type: Conference or Workshop Item (Lecture)
Keywords (Croatian): piston ring, mounting procedure, marine diesel engine, stress, analytical solution, FEM
Subjects: TECHNICAL SCIENCE > Mechanical Engineering
Divisions: 600 Department of Naval Engineering and Marine Technology > 650 Chair of Marine Machinery and System Design
Indexed in Web of Science: No
Indexed in Current Contents: No
Date Deposited: 20 May 2016 13:26
Last Modified: 12 Oct 2017 13:35
URI: http://repozitorij.fsb.hr/id/eprint/5851

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