A Study of the Heat Flux on Combustion Chamber in Diesel Engines

Abstract

Maintenance and inspection work during operation for the low speed diesel engines have to be minimized to rationalize the work and reduce the maintenance cost. For higher reliability and automatic surveillance, the detection of abnormal conditions and diagnosis of troubles have become necessary for engines.This study analyses the temperature of combustion chamber of the low speed diesel engine at simulated operation. The heat flux inside the combustion chamber rises up suddenly at severe conditions of operation, and that results in the abnormal temperature change, especially at piston, piston ring and cylinder liner. The temperature distribution is estimated by calculations and analyzed by finite element method (FEM) . Time-aging effect of diesel engines raises heat flux on combustion chamber to the trouble of engines.