Analisis Degradasi Pelumas Mesin Diesel B100 dengan Aditif Alami Castor Oil dan Eugenol

Rosyida, Ghina Nur (2026) Analisis Degradasi Pelumas Mesin Diesel B100 dengan Aditif Alami Castor Oil dan Eugenol. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Biodiesel B100 mempercepat degradasi pelumas mesin diesel akibat sifat oksidatifnya yang tinggi. Degradasi ditandai penurunan viskositas dan penurunan cadangan basa (TBN) dalam waktu singkat. Penelitian ini menganalisis pengaruh aditif alami Castor Oil 1% dan Eugenol 0,5%. Aditif ditambahkan pada pelumas Mesran SAE 40 untuk mesin Yanmar TF-85MH berbahan B100. Dua sampel diuji yaitu pelumas murni dan pelumas dengan aditif selama 200 jam. Durasi pengujian mengacu standar EMA untuk ketahanan mesin secara terus menerus. Analisis fisik dan kimia dilakukan laboratorium tersertifikasi menggunakan metode ASTM D5185-18. Torsi, daya, dan SFOC diukur pada kondisi torsi maksimum. Pelumas dengan aditif hanya mengalami penurunan viskositas 7,7% sedangkan pelumas murni turun 34,1%. Kandungan besi turun 80,6% dan timbal turun 97,5% pada pelumas beraditif. Laboratorium mengategorikan pelumas murni sebagai Severe dan pelumas beraditif sebagai Attention. Pelumas beraditif juga menghasilkan torsi dan daya lebih tinggi serta SFOC lebih rendah. Hasil ini membuktikan kombinasi Castor Oil dan Eugenol mampu memperlambat degradasi pelumas. Kombinasi aditif ini juga terbukti meningkatkan efisiensi mesin diesel berbahan bakar B100.
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B100 biodiesel accelerates lubricant degradation in diesel engines due to its high oxidative properties. Viscosity and total base number (TBN) decline rapidly during short operating periods. This study analyzes the effect of 1% Castor Oil and 0.5% Eugenol additives on Mesran SAE 40 lubricant. These additives were tested against lubricant degradation and engine performance on a Yanmar TF-85MH fueled with B100. The experimental method used two lubricant samples: pure oil and additive-enhanced oil. Both samples were tested for 200 hours following the EMA engine durability standard. Physical and chemical properties were analyzed by a certified laboratory. Wear metals were measured using the ASTM D5185-18 method while torque power and SFOC were measured at maximum torque. The additive-enhanced oil showed only a 7.7% viscosity decline while pure oil declined by 34.1%. Iron content dropped 80.6% and lead content dropped 97.5% in the additive-enhanced oil. The laboratory classified pure oil as Severe and additive-enhanced oil as Attention. Additive-enhanced oil also produced higher torque and power with lower SFOC. The results prove that combining Castor Oil and Eugenol slows lubricant degradation and improves diesel engine efficiency using B100 fuel. This natural additive combination shows potential as an environmentally friendly alternative for the maritime sector.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	aditif castor oil dan eugenol, biodiesel B100, degradasi pelumas, performa mesin diesel, diesel engine performance, lubricant degradation
Subjects:	T Technology > TJ Mechanical engineering and machinery > TJ1077 Lubrication and lubricants. V Naval Science > VM Naval architecture. Shipbuilding. Marine engineering > VM731 Marine Engines
Divisions:	Faculty of Marine Technology (MARTECH) > Marine Engineering > 36202-(S1) Undergraduate Thesis
Depositing User:	Ghina Nur Rosyida
Date Deposited:	04 Aug 2026 03:55
Last Modified:	04 Aug 2026 03:57
URI:	http://repository.its.ac.id/id/eprint/141523

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