Putri, Ifta Chariska (2021) Pengaruh Penambahan Minyak Sereh (Citronella Oil) Sebagai Bioaditif Pada Bahan Bakar Biodiesel Terhadap Performa Dan Emisi Mesin Diesel. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Ketersediaan bahan bakar fosil yang semakin menipis diakibatkan penggunaan yang semakin meningkat menjadi salah satu alasan untuk menggunakan bahan bakar alternatif pengganti berupa bahan bakar biodiesel. Namun, biodiesel sendiri memiliki kekurangan seperti densitas lebih tinggi, nilai kalor yang lebih rendah, konsumsi bahan bakar yang tinggi, dan nitrogen oksida (NOx) yang tinggi dibandingkan solar. Untuk memperbaiki kekurangan tersebut dapat dilakukan dengan meningkatkan angka setana bahan bakar dengan menambahkan bioaditif berupa minyak sereh wangi. Tujuan dari tugas akhir ini mengetahui karakteristik dari bahan bakar biodiesel setelah ditambahkan minyak sereh wangi, serta mengetahaui pengaruh penambahan minyak sereh terhadap performa mesin dan emisi. Penelitian ini dilakukan secara eksperimen dengan menambahkan minyak sereh wangi dengan variasi komposisi 0.5%, 0.75%, 1%, 1.25%, dan 1.5% dari volume bahan bakar Biodiesel. Bahan bakar tersebut diuji pada mesin diesel Yanmar TF85-MH. Dari hasil uji, angka setana mengalami peningkatan di setiap penambahan komposisi sereh wangi, dengan angka setana tertinggi pada bahan bakar B30+SW 1,5% sebesar 70,8 nilai tersebut mengalami peningkatan 25,9% jika dibandingkan dengan angka setana B30. Untuk hasil nilai kalor tertinggi pada B30+SW 1.5% mengalami peningkatan sebesar 2.7% jika dibandingkan nilai kalor B30. Hasil uji performa pada mesin diesel terjadi peningkatan performa berupa daya, torsi, dan BMEP jika dibandigkan bahan bakar B30. Namun semakin bertambahnya penambahan komposisi minyak sereh wangi menghasilkan performa lebih rendah dan nilai SFOC semakin menurun. Hasil emisi NOx terendah pada saat putaran 2000 RPM dengan beban terbesar dihasilkan oleh bahan bakar yang telah ditambahkan sereh wangi 1,5% dengan penurunan 21.6% jika dibandingkan dengan bahan bakar acuan.
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The dwindling availability of fossil fuels due to increasing use is one of the reasons for using alternative fuels in the form of biodiesel fuel. However, biodiesel has disadvantages such as higher density, lower calorific value, high fuel consumption, and high nitrogen oxides (NOx) compared to diesel. To correct this deficiency, it can be done by increasing the cetane value of the fuel by adding a bio additive in the form of citronella oil. The purpose of this final project is to determine the characteristics of biodiesel fuel after adding citronella oil, and to determine the effect of adding citronella oil to engine performance and emissions. This research was conducted experimentally by adding citronella oil with composition variations of 0.5%, 0.75%, 1%, 1.25%, and 1.5% of the volume of biodiesel fuel. The fuel was tested on a Yanmar TF85-MH diesel engine. From the test results, the cetane number increased with each addition of citronella oil composition, with the highest cetane number in B30+SW 1.5% fuel at 70.8, the value increased by 25,9% when compared to the B30 cetane number. For the result, the highest calorific value at B30+SW 1.5% increased by 2.7% when compared to the calorific value of B30. The results of the performance test on the diesel engine showed an increase in performance in the form of power, torque, and BMEP when compared to B30 fuel. However, the addition of citronella oil composition resulted in lower performance and the SFOC value decreased. The lowest NOx emission results at 2000 RPM rotation with the largest load produced by fuel that has been added with 1.5% citronella oil with a decrease of 21.6% when compared to the base fuel.
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Uncontrolled Keywords: | Biodiesel, Bioaditif, Emisi, Minyak Sereh Wangi, NOx, Performa Motor, Biodiesel, Bioadditive, Citronella Oil, Emissions, Motor Performance, Nox |
| Subjects: | T Technology > TJ Mechanical engineering and machinery T Technology > TJ Mechanical engineering and machinery > TJ799 Diesel motor--Electronic control. T Technology > TP Chemical technology T Technology > TP Chemical technology > TP359.B46 Biodiesel fuels. |
| Divisions: | Faculty of Marine Technology (MARTECH) > Marine Engineering > 36202-(S1) Undergraduate Thesis |
| Depositing User: | Ifta Chariska Putri |
| Date Deposited: | 31 Aug 2021 03:47 |
| Last Modified: | 25 Jul 2024 02:57 |
| URI: | http://repository.its.ac.id/id/eprint/91133 |
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