Análise de eficiência e optimização na manutenção dos injectores das locomotivas GEC30 ACI no laboratório de injecção da empresa Caminhos de Ferro de Moçambique (CFM)-Sul

Abstract

The CFM-Sul company heavily relies on the efficiency of GE C30 ACI locomotives for cargo transport, yet faces a significant challenge due to frequent injector failures during maintenance. These failures have direct impact on the company operations due to increasing maintenance costs and reducing locomotive availability. To address this issue, the current study was conducted, involving a rigorous scientific methodology, which includes literature review, consultation of technical manuals, and field data collection. The data analysis of the study shows that failures of repaired injectors at CFM-Sul (injection) laboratory reveals that from a sample of four batches, corresponding approximately to 69% have passed the inspection, while 23% failed due to dripping issues and 8% due to low injection pressure. The solutions presented in the current work aim to enhance equipment maintenance and propose maintenance procedures, which include upgrading injector cleaning benches by acquiring a GR-800 needle and nozzle seat grinder machine, as well as procuring a VPUD1100 SV injector test bench. It is assumed that these suggested improvements will reduce injector failures, optimize repair time, minimize physical and mental strain on technicians, and reduce operational costs. By implementing these proposed innovative measures is expected to not only mitigate injector failures but also to significantly increase the CFM-Sul operational efficiency.