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All Journal AJARCDE (Asian Journal of Applied Research for Community Development and Empowerment)
Herlin Sumarna
Department of Mechanical Engineering, Sriwijaya State Polytechnic, South Sumatra, 30128, Indonesia
Agriculture, Biological Sciences & Forestry Earth & Planetary Sciences Education Energy Environmental Science

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Performance Evaluation of Firman FPG1500ECII Generator Set after Maintenance and Overhaul with Various Gasoline Fuels Herlin Sumarna; Toni Okviyanto; Tri Satya Ramadhoni; Agis Fika Wulandari; Indra Syahputra; Stevan Juliandro Aruan
AJARCDE (Asian Journal of Applied Research for Community Development and Empowerment) Vol. 10 No. 2 (2026)
Publisher : Asia Pacific Network for Sustainable Agriculture, Food and Energy (SAFE-Network)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29165/ajarcde.v10i2.1146

Abstract

Generator sets are widely used as a backup power source for household and small industrial applications. The reliability of a generator set is strongly influenced by the condition of its engine components and the maintenance quality. This study aims to evaluate the performance of a Firman FPG1500ECII generator set after maintenance and overhaul using three different gasoline fuels, namely Pertalite, Pertamax 92, and Pertamax Turbo. The research stages consisted of visual inspection, failure identification, maintenance and overhaul processes, and performance testing under a constant load of 540 W. The performance parameters investigated included electrical power output, fuel mass flow rate, Specific Fuel Consumption (SFC), electrical efficiency, and Brake Thermal Efficiency (BTE). Initial inspection results revealed failures in the piston ring, connecting rod bearing, and main bearing, as well as carbon deposits in the combustion chamber and valve system, causing the generator set to fail completely. After maintenance and overhaul, the generator set was successfully restored and subjected to performance testing. The results indicated that fuel type significantly affected generator performance. Pertamax Turbo exhibited the best performance with a fuel mass flow rate of 0.2751 kg/h, SFC of 1.557 kg/kWh, electrical efficiency of 5.18%, and BTE of 76.55%. In contrast, Pertalite showed the highest fuel consumption with a fuel mass flow rate of 0.4155 kg/h, SFC of 2.405 kg/kWh, electrical efficiency of 3.36%, and BTE of 50.68%. The findings demonstrate that maintenance and overhaul successfully restored the operational performance of the generator set, while higher-octane fuels improved combustion efficiency and overall generator performance after maintenance. Contribution to Sustainable Development Goals (SDGs):SDG 7: Affordable and Clean EnergySDG 9: Industry, Innovation and InfrastructureSDG 12: Responsible Consumption and ProductionSDG 13: Climate Action
Failure Analysis of a Total Breakdown in a Firman FPG1500ECII Generator Set Using Root Cause Identification Toni Okviyanto; Herlin Sumarna; Tri Satya Ramadhoni; Agis Fika Wulandari; Indra Syahputra; Stevan Juliandro Aruan
AJARCDE (Asian Journal of Applied Research for Community Development and Empowerment) Vol. 10 No. 3 (2026)
Publisher : Asia Pacific Network for Sustainable Agriculture, Food and Energy (SAFE-Network)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29165/ajarcde.v10i3.1190

Abstract

Generator set failures are commonly investigated by examining individual damaged components; however, limited studies have systematically integrated failure mechanism analysis, failure propagation analysis, and Root Cause Identification (RCI) to explain the sequence of events leading to total system breakdown. This study aims to identify the failure mechanisms and root causes of a total breakdown in a Firman FPG1500ECII gasoline-powered generator set and to develop evidence-based preventive maintenance recommendations. The investigation employed a forensic engineering approach by integrating systematic visual inspection, tribological failure analysis, failure propagation analysis, Fishbone Diagram, and 5 Why Analysis. The results revealed that inadequate lubrication management was the primary initiating factor, leading to progressive piston ring wear, bearing damage, carbon deposit accumulation, valve leakage, ignition system deterioration, and ultimately complete engine failure. Failure propagation analysis demonstrated that the breakdown resulted from the interaction of multiple component failures rather than the failure of a single component. Based on the identified root causes, an evidence-based preventive maintenance schedule was developed using manufacturer recommendations and previous maintenance studies. The principal contribution of this study is the development of an integrated engineering failure analysis framework that systematically links failure mechanisms, failure propagation, and Root Cause Identification to support maintenance decision-making and improve the reliability of gasoline-powered generator sets operating under similar conditions. Contribution to Sustainable Development Goals (SDGs):SDG 7: Affordable and Clean EnergySDG 8: Decent Work and Economic GrowthSDG 9: Industry, Innovation and InfrastructureSDG 12: Responsible Consumption and Production
Co-Authors Agis Fika Wulandari Indra Syahputra Stevan Juliandro Aruan Toni Okviyanto Tri Satya Ramadhoni