Analisis Penambahan Cairan Aditif 2-Ethylhexyl Nitrate (2EHN) Pada Bahann Bakar B30 Dan B50 Terhadap Performa Mesin Diesel

Herlambang, Bangkit (2022) Analisis Penambahan Cairan Aditif 2-Ethylhexyl Nitrate (2EHN) Pada Bahann Bakar B30 Dan B50 Terhadap Performa Mesin Diesel. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Mesin diesel merupakan mesin yang banyak digunakan dan dapat dijumpai di kehidupan sehari hari. Mesin diesel banyak digunakan pada moda transportasi darat maupun transportasi laut. Maka dari itu, konsumsi bahan bakar mesin diesel sangat besar karena banyak digunakannya mesin diesel. Kualitas bahan bakar ini berpengaruh pada konsumsi bahan bakar dan daya yang dihasilkan. Kualitas bahan bakar sendiri dapat dilihat pada angka setana (Cetane Number) bahan bakar. Peningkatan angka setana ini dapat dilakukan dengan cara penambahan aditif pada biodiesel. Diethyl ether (DEE) dan 2-Ethylhexyl Nitrate (2EHN) merupakan aditif peningkat angka setana. Namun 2EHN memiliki harga yang lebih terjangkau dibanding DEE. Penambahan 2EHN berpengaruh pada angka setana dan nilai kalor bahan bakar. Selain itu 2EHN berpengaruh dalam perubahan performa mesin. Untuk membuktikan pengaruh penambahan 2EHN terhadap karakteristik bahan bakar dan performa, maka dilakukan eksperimen. Eksperimen dilakukan pada mesin diesel YANMAR tipe TF 85 MH di Lab Marine Power Plant ITS. Untuk pengujian karakteristik bahan bakar dilakukan di Lab LPPM ITS. Variasi bahan bakar yang digunakan adalah B30 murni, B30+0.2%EHN, B30+0.4%, dan B30+0.6%EHN. Sedangkan untuk B50 adalah B50 murni, B50+0.2%EHN, B50+0.4%, dan B50+0.6%EHN. Hasil yang diperoleh dalam eksperimen ini menunjukan bahwa semakin banyak presentase 2EHN pada B30 maupun B50, maka angka setana semakin meningkat. Namun untuk nilai kalor (LHV), semakin banyak presentase 2EHN pada bahan bakar B30 maupun B50, maka nilai kalornya akan semakin menurun. Daya, torsi, dan SFOC yang dihasilkan mesin dengan bahan bakar campuran 2EHN lebih unggul daripada bahan bakar B30 murni dan B50 murni. Torsi dan daya tertinggi dihasilkan oleh B30+0.2%EHN. Sedangkan untuk SFOC rata-rata terendah dihasilkan oleh B30+0.4%EHN. Pada campuran bahan bakar B50, B50+0.4%EHN rata rata menghasilkan daya dan torsi tertinggi. Sedangkan untuk SFOC rata-rata terbaik dimiliki bahan bakar B50+0.6%EHN.
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Diesel engines are widely used in daily life. Diesel engines are used in land and sea transportation. Diesel fuel consumption is very huge because of the large number of diesel engines used. The quality of diesel fuel affects fuel consumption and the power produced by the engine. The quality of the fuel itself can be known by the cetane number of the fuel. To increase cetane number, it can be done by adding additives to biodiesel fuel. Diethyl ether (DEE) and 2-Ethylhexyl Nitrate (2EHN) are cetane number enhancing additives. However, 2EHN price is more affordable than DEE. The addition 2EHN affects the cetane number and the calorific value of the fuel. Moreover, 2EHN affects on engine performance. To prove the effect of adding 2EHN on fuel characteristics and performance, an experiment was conducted. The Experiments were carried out on the YANMAR diesel engine type TF 85 MH at the ITS Marine Power Plant Lab. Meanwhile, the test of fuel characteristics was carried out at the ITS LPPM Lab. The fuel variations used are pure B30, B30+0.2%EHN, B30+0.4%, and B30+0.6%EHN. As for B50, they are pure B50, B50+0.2%EHN, B50+0.4%, and B50+0.6%EHN. The results obtained in this experiment show that the higher the percentage of 2EHN addition in B30 and B50, the higher the cetane number. However, for the Low Heating Value (LHV), the higher the percentage of 2EHN addition in B30 and B50, the LHV decreased. The power, torque and SFOC produced by the engine with the 2EHN blended fuel are superior to pure B30 and pure B50 fuels. The highest torque and power are produced by the B30+0.2%EHN. Meanwhile, the lowest average SFOC is produced by B30+0.4%EHN. In the B50 fuel mixture, B50+0.5%EHN produces the highest power and torque. Meanwhile, the lowest average SFOC is produced by B50+0.6%EHN.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Biodiesel, Nilai Kalor, Angka Setana, Mesin Diesel, Aditif Bahan Bakar, Performa, Biodiesel, Calorific Value, Cetane Number, Diesel Engine, Fuel Additive, Performance.
Subjects:	T Technology > TP Chemical technology > TP359.B46 Biodiesel fuels. V Naval Science > VM Naval architecture. Shipbuilding. Marine engineering
Divisions:	Faculty of Marine Technology (MARTECH) > Marine Engineering > 36202-(S1) Undergraduate Thesis
Depositing User:	Mr. Marsudiyana -
Date Deposited:	25 Feb 2026 06:54
Last Modified:	25 Feb 2026 06:54
URI:	http://repository.its.ac.id/id/eprint/132616

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