Original scientific paper

A novel cylinder cooling system of air-cooled engines

Frano B. Damjanić ; Department of Civil Engineering, University of Ljubljana, Ljubljana, SLOVENIA
Ferdinand Trenc ; Department of Mechanical Engineering, University of Ljubljana, Ljubljana, SLOVENIA
Rajko Pavletić ; Department of Mechanical Engineering, University of Ljubljana, Ljubljana, SLOVENIA

Abstract

An axisymmetric thermal finite element analysis of a cylinder liner subjected to time dependent thermal load is presented. The influence of the magnitude of heat transfer coefficient on fins and variability of thermal conductivity is assessed. Numerical predictions are compared against experimental values yielding good agreement during the entire experiment. The results for two sets of cooling systems are presented; namely, basic air cooling on fins only and with additional cooling by oil flowing in a channel. The final purpose of the numerical model developed is its I'm plementation in the design of a novel additional cooling system leading to enhanced cooling rates on the liner. The presented verification of the model is a step in ensuring its reliability in the optimisation design of cylinders.

Keywords

Hrčak ID:

319819

URI

https://hrcak.srce.hr/319819

Publication date:

8.12.1993.

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