Comparative Analysis of Methods for Enhancing the Thermal State Stability of Critical Thermally Loaded Components in High-Boost Medium-Speed Diesel Engines

Abstract

The paper addresses the enhancement of gas joint sealing integrity in a boosted medium-speed diesel engine with a suspended-type cylinder liner design. The objective of the study is to evaluate the effectiveness of various supplementary cooling strategies for the cylinder head and to perform a comparative analysis. As a result of three-dimensional finite element analysis, temperature fields of the cylinder head–liner assembly, including the gas joint region, were obtained. Various methods of cooling the high-temperature zone were compared, and conclusions were drawn regarding the feasibility and effectiveness of their application. Recommendations are provided for reducing temperatures in the gas joint area and improving its operational reliability under engine boosting conditions.