Analisa Karakteristik Pembakaran pada Mesin Stasioner Berbahan Bakar Campuran Bensin Pirolisis dengan Pertalite

Abstract

The utilization of plastic waste through the pyrolysis process into alternative fuel is one of the solutions to address the fossil fuel energy crisis and environmental problems caused by plastic waste. This study aims to analyze the combustion characteristics and exhaust emissions of a stationary engine using a blend of pyrolysis gasoline and Pertalite. Testing was conducted with variations of Pertalite and pyrolysis gasoline blends, namely G100P0, G90P10, G70P30, G50P50, and G0P100. Parameters tested include in-cylinder pressure, peak combustion pressure, IMEP, HRR, combustion location and duration, indicated power, specific fuel consumption, thermal efficiency, and emission gases. The results showed that increasing the pyrolysis oil ratio decreased the Mean PCP in the G0P100 sample, accompanied by an increase in CoV PCP. This decrease in PCP correlates linearly with the decrease in Mean IMEP and engine power. Technically, the high viscosity and density of pyrolysis oil inhibit atomization, thereby reducing HRR, delaying burn location by 1- 3°CA, and extending burn duration by 1-3°CA. Analysis results indicate that while the addition of pyrolysis gasoline lowers peak performance and flame propagation speed, the highest thermal efficiency was achieved with the G90P10 blend, and the best ISFC was found in G50P50. This indicates that pyrolysis oil has great potential as an alternative fuel because its high heating value is able to compensate for the longer combustion duration.