Perbandingan Kinerja Motor Bakar 6-Langkah dengan Power-Ekspansi sampai Titik Mati Bawah Menggunakan Bahan Bakar Pertalite dan Etanol

This paper describes compare the performance and emissions of a 6-stroke engine with power-expansion up to BDC (bottom dead center) using pertalite fuel (non-renewable) and 99.7% ethanol (renewable alternative) with performance parameters including (effective power , fuel consumption, Combustion Efficiency , thermal efficiency , fuel efficiency  and emission parameters including (HC, CO and CO2). The method used is a real experimental method, with the independent variables being throttle openings of 35%, 40% , 45%, and 50% with loading on the prony disk brake of 10kg, 20kg, 30kg, 40kg, 50kg. The results of the research on the performance parameters of the magnitude of the effective power of ethanol is 17.5% less than pertalite, The rate of consumption of ethanol fuel 1,61 seconds/10ml lower than pertalite by 2,9 seconds/10ml, For the magnitude of the combustion efficiency (Combustion Efficiency) pertalite is 0.3% greater than ethanol, For the magnitude of the thermal efficiency p there is a 6-stroke engine with power-expansion up to BDC with ethanol fuel tends to be almost the same with 0.29% greater pertalite compared to ethanol, for the magnitude of pertalite fuel efficiency is 4% higher than ethanol. Then the emission parameters for the CO2 value of 80% pertalite tend to have a higher value than ethanol, the HC value is 21.7% higher in ethanol, for the higher CO2 content is dominated by 51.8% ethanol than pertalite.