IMPROVEMENT OF MAINTENANCE PROGRAM OF DIESEL ENGINE

Abstract

Diesel engines draw larger interest today mainly because of higher efficiency and cost effectiveness. The thermal electric power unit is a complex system with several components. In case of diesel engine, the respective subsystems are the diesel engine, the electric equipments, and systems of oil, fuel, water cooling etc. this work is aimed to carry out a reliability study for individual sub-systems, so as the most frequently malfunctioning parts of the system be identified and proactive measures be taken. Nowadays, maintenance has become a strategic function in its own right since it must ensure maximum uptime at lower cost. Thus, and to ensure the availability of equipment, knowledge and rigorous and optimal management of maintenance is needed, and also a continuous improvement of the reliability and maintainability. In this research, our work takes stock of the FMECA study as a tool to improve the maintenance and the availability of equipment. Therefore, it is necessary to know the failure mode to which the system is subjected, and also of their criticality in order to the development of an adequate maintenance schedule while following the specifications of the equipment. The information gathered in the FMECA enabled tailoring the maintenance to handle each evaluated failure mode, resulting in a program of both corrective and preventive actions. Further, the results were structured to provide a framework for continuous improvement and update of the maintenance program. Cylinder liner, pistons, fuel injectors, exhaust valves and oil pump were identified as the top critical items.