Electronic Theses and Dissertation

Limbah ban dalam bekas bus mendorong pemanfaatan minyak hasil pirolisis sebagai bahan bakar alternatif. Penelitian ini bertujuan untuk mengetahui pengaruh campuran Pertamina Dex dan Inner Tube Pyrolysis Oil (ITPO) terhadap prestasi mesin diesel meliputi daya mesin, konsumsi bahan bakar spesifik (spesific fuel consumption/sfc), dan efisiensi termal pada berbagai variasi pembebanan. Pengujian dilakukan menggunakan mesin diesel Yanmar TF65R pada putaran 2200 rpm dengan variasi bahan bakar ITPO-0%, ITPO-30%, ITPO-40%, dan ITPO-50%, serta variasi beban 1500 W, 2000 W, dan 2500W. Hasil penelitian menunjukkan bahwa peningkatan pembebanan menyebabkan daya mesin meningkat pada seluruh variasi bahan bakar. campuran ITPO-40% menghasilkan daya lebih tinggi dibandingkan ITPO-30%, dimana pada beban 2500W daya yang menghasilkan sebesar 1,181 kW, sedangkan ITPO-30% menghasilkan daya sebesar 1,075 kW. Pada parameter konsumsi bahan bakar spesifik dan efisiensi termal, campuran ITPO-30% menunjukkan performa yang lebih stabil pada pembebanan menengah hingga tinggi. Sementara itu, campuran ITPO-50% menghasilkan daya tertinggi sebesar 1,428 kW, namun mengalami penurunan efisiensi termal yang cukup signifikan pada beban tinggi hingga 6,25%. Secara keseluruhan, campuran ITPO-40% lebih direkomendasikan untuk menghasilkan daya mesin yang lebih tinggi, sedangkan ITPO-30% lebih optimal dalam menjaga kestabilan performa mesin diesel.

Waste from bus inner tube has encouraged the utilization of pyrolysis oil as an alternative fuel. This study aims to ivestigate the effect of blends of Pertamina dex and Inner Tube Pyrolysis Oil (ITPO) on diesel engine performance, including engine power, spesifik fuel consumption (SFC), and thermal efficiency under various loading conditions. The tests were conducted using a Yanmar TF65R diesel engine operating at 2200 rpm, with fuel variations of ITPO-0%, ITPO-30%, ITPO-40%, and ITPO-50%, along with load variations of 1500 W, 2000 W, and 2500 W. The results indicate that increasing the load loads to higher engine power for all fuel variations. The ITPO-40% blend produces higher power compared to ITPO-30%, where at a load of 2500 W, the generated power reacher 1,181 kW, while ITPO-30% produces 1,075 kW. In terms of specific fuel consumption and thermal efficiency, the ITPO-30% blend demonstrates more stable performance at medium to high loads. Meanwhile, the ITPO-50% blend yields the highest power output of 1.428 kW, however, it experiences a significant decrease in thermal efficiency at high loads, reaching 6,25%. Overall, the ITPO-40% blend is more recommended for achieving higher engine power, while the ITPO-30% blend is more optimal for maintaining stable diesel engine performance.