Thermal effects on diesel engine piston and piston compression rings

Abstract EN

This paper introduces an analytical study on the thermal effects on the diesel engine piston and its compresion rings during the contact between the piston and its compression rings.

A three dimensional finite element model is built for the piston and its compression rings using the ANSYS v.

8 Finite Element Analysis Code that serves all engineering problems.

The thermal analysis is made using contact case between the piston and its compression rings.

The work in this paper did not include a convergence study.

The study includes the effects on the piston and piston compression rings of the thermal conductivity of piston material, and the contact area.

The conclusions of this study are that the material type of high thermal conductivity is considered better than the material type of low thermal conductivity.

This means that the aluminum alloy is considered better than the cast-iron alloy, and tapering the compression rings from the inner side by 1 mm, leads to a reduction in the temperature values by 1.6 %, 0.84 % and 0.37 % compared to rectangle compression rings.