Prasetiyo, Yudha (2019) Analisa Eksperimen Pengaruh Gas Split Injection Terhadap Performa Dual-Fuel Engine. Other thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Dual-fuel engine telah secara masif digunakan sebagai penggerak mesin utama. Namun pada operasional dual-fuel engine, permasalahan terjadi pada operasional beban rendah terjadi pembakaran yang tidak stabil dan efisiensi termal yang relatif rendah. Pada penelitian kali ini dilakukanlah strategi gas split injection pada dual-fuel engine. Penelitian ini bertujuan untuk membandingkan kinerja mesin antara operasional dual-fuel tanpa strategi gas split injection dan operasional mesin dual-fuel dengan strategi gas split injection. Split injection merupakan sistem penginjeksian bahan bakar dengan membagi injeksi menjadi beberapa waktu penginjeksian dengan kuantitas tertentu. Sistem injeksi ini dapat dilakukan pada sistem dual-fuel engine yaitu yang sebelumnya merupakan modifikasi dari mesin diesel konvensional Yanmar TF 85 MH. Variasi pada penelitian ini yaitu injection split ratio (ISR) 25%:75%; 50%:50%; 75%:25%, variasi waktu injeksi dan variasi load dengan ditetapkan putaran mesin pada 2000 RPM. Hasil yang didapatkan pada penelitian ini yaitu variasi terbaik terdapat pada gas split injection ISR 75%:25% dengan jarak penginjeksian pada 260°bTDC & 244°bTDC . Dikarenakan pada jarak injeksi tersebut prosentase perbedaan terbesar terjadi pada semua parameter yang diuji antara single injection dan split injection. Prosentase perbedaan daya, torsi, BMEP, SFOC dan efisiensi termal terbesar hanya terjadi pada load 100% yaitu masing-masing sebesar 4.3%; 4.2%; 4.2%; 16%; 18.3%.
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The use of a dual-fuel engine massively used as the main engine. However, in dual-fuel
engine operations, problems occur in low load operations. The combustion quality with
unstable combustion conditions and relatively low thermal efficiency. In this research,
a gas split injection strategy has been completed do on the dual-fuel engine. The
purpose of this research is to compare the performance of the engine between dual-fuel
operations without the gas split injection strategy and dual-fuel engine operation with
the gas split injection strategy. Furthermore, split injection is a fuel injection system by
dividing the injection into several injection stage with a certain mass and period. This
injection system applied on a dual-fuel engine system, which was previously a
modification of the conventional diesel Yanmar TF 85 MH. The variation in this study
is the injection split ratio (ISR) 25%:75%; 50%:50%; 75%:25%, variations in injection
time and variations in load with specified engine speed at 2000 RPM. The results
obtained in this study are the best variations found in ISR 75%:25% gas split injection
with injection distance at 260°bTDC & 244°bTDC . Due to the injection distance, the
largest percentage difference occurred in all parameters tested between single injection
and split injection. The greatest percentage of difference in power, torque, BMEP,
SFOC, and the thermal efficiency only occurs at 100% load, which is 4.3%; 4.2%;
4.2%; 16%; 18.3%.
| Item Type: | Thesis (Other) |
|---|---|
| Uncontrolled Keywords: | Diesel, Dual-fuel Engine, Gas split injection, Injection Split Ratio, Performance |
| Subjects: | T Technology > TJ Mechanical engineering and machinery T Technology > TL Motor vehicles. Aeronautics. Astronautics |
| Divisions: | Faculty of Marine Technology (MARTECH) > Marine Engineering > 36202-(S1) Undergraduate Thesis |
| Depositing User: | Yudha Prasetiyo |
| Date Deposited: | 02 Jul 2024 06:47 |
| Last Modified: | 02 Jul 2024 06:47 |
| URI: | http://repository.its.ac.id/id/eprint/69478 |
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