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Gasification is a process of converting carbon-containing compounds to convert both liquid and solid materials into fuel-capable gas (CO, H2, CO2, CH4, and H2O) through the combustion process with limited air supply. Gasification that we have known so far is gasification with coal feed and agricultural waste, but gasification with livestock waste feed has never been done. In this study the gasification feed material used horse dung biomass with a gas agent in the form of oxygen. The purpose of this study was to determine the effect of oxygen flow rate (4 variations namely 10, 15, 20 and 30 lt / min) in the process of gasification of horse dung (produced 4 fuels namely syngas A, syngas B, syngas C and syngas D) on the performance capabilities of a 100 cc engine. The stages of the research carried out were drying feed material, gasification process, syngas storage and testing on a 100 cc engine with various variations of rotation (4 variations namely 1500, 2500, 3500 and 4500 rpm). The results obtained from this study are the highest torque and effective power obtained in syngas A fuel for various engine speeds. At 4500 rpm, a torque of 6.7 Nm is obtained, while an effective power of 3156 Watts is used to test engine results using Syngas A fuel.

The long term purpose of this research is to obtain the high quality renewable biogas that can be used as fuel for internal combustion engines to drive an electricity generator as energy diversification efforts in the area PENDAHULUANSeiring dengan perkembangan teknologi industri yang semakin pesat maka kebutuhan akan sumber energi yang terbarukan (renewable energy) menjadi pertimbangan yang sangat penting. Hal ini disebabkan semakin langkanya sumber energi minyak bumi dan semakin tingginya harga minyak mentah dunia, sehingga penelitian -penelitian inovatif terus dikembangkan untuk menemukan sumber energi yang terbarukan. Penelitian -penelitian tersebut tidak hanya untuk menemukan sumber energi baru saja, akan tetapi mampu menemukan sumber energi yang bersifat ramah lingkungan.Biogas bisa menjadi solusi pengganti energi bahan bakar minyak yang murah dan ramah lingkungan. Komposisi dari biogas adalah CH4, CO2, N2, H2, O2, dan H2S. Gas metan atau CH4 dalam biogas adalah unsur utama dalam biogas yang menjadi komponen dalam Dinamika Teknik Mesin 7 (2017) 1-6

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