Jatropha is proven to reduce dependence on diesel fuel. Jatropha oil is widely used as a mixture of diesel fuel. However, low heating value and high viscosity result in lower engine performance and higher carbon black emissions than pure diesel fuel. Alcohol groups such as butanol have low viscosity properties and oxygen and cetane numbers close to diesel fuel. The use of butanol as an additive to diesel-jatropha mixed fuels is expected to improve engine performance. This study aims to observe brake power, brake specific fuel consumption, and brake thermal efficiency of diesel engines using diesel-jatropha-butanol mixed fuel. Jatropha used 10%, 20% and 30%. While the butanol used is 5%, 10%, and 15% based on volume. The research increased in a brake power value of 2.22%. The decrease in brake specific fuel consumption was 4.81% and the increase in brake thermal efficiency was 10.85%. Abstrak Jatropa terbukti dapat mengurangi ketergantungan bahan bakar solar. Minyak jatropa banyak digunakan sebagai bahan campuran bahan bakar solar. Namun, nilai kalor yang rendah dan viskositas yang tinggi mengakibatkan prestasi mesin menjadi lebih rendah dan emisi jelaga menjadi lebih tinggi dibandingkan bahan bakar solar murni. Kelompok alkohol seperti butanol memiliki propertis viskositas yang rendah dan kandungan oksigen dan cetane number yang mendekati bahan bakar solar. Penggunan butanol sebagai additif pada bahan bakar campuran solar-jatropa diharapkan dapat meningkatkan prestasi mesin. Penelitian ini bertujuan mengobservasi brake power, brake spesific fuel consumption, dan brake thermal efficiency mesin diesel menggunakan bahan bakar campuran solar-jatropa-butanol. Jatropa yang digunakan sebesar 10%, 20% dan 30%. Sedangkan butanol yang digunakan sebesar 5%, 10%, dan 15% berbasis volume. Penelitian menghasilkan nilai peningkatan brake power sebesar 2,22%. Penurunan brake spesific fuel consumption sebesar 4,81% dan peningkatan brake thermal efficiency sebesar 10,85%.
CITATION STYLE
Syarifudin, S., Syaiful, S., & Sanjaya, F. L. (2020). Brake power, brake spesific fuel consumption, dan brake thermal efficiency mesin diesel injeksi langsung berbahan bakar solarjatropa-butanol. Turbo : Jurnal Program Studi Teknik Mesin, 9(2). https://doi.org/10.24127/trb.v9i2.1177
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