Suryawinawan, Zsadevivo Calvin (2025) Studi Eksperimen Pengaruh Sistem Internal Exhaust Gas Recirculation (I-EGR) Terhadap Performa, Getaran, Kebisingan, dan Emisi Mesin Diesel Dual Fuel Berbahan Bakar Biodiesel B-35 DAN LPG. Other thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Meningkatnya permintaan transportasi laut mendorong penggunaan mesin diesel yang efisien namun bermasalah dengan emisi NOx tinggi, sehingga mendorong pengembangan teknologi seperti EGR, SCR, dan lainnya untuk mengurangi dampak lingkungan. Sistem EGR internal memanfaatkan modifikasi profil camshaft untuk membuka kembali katup exhaust setelah langkah hisap, sehingga memungkinkan sirkulasi gas buang kembali ke ruang bakar dan menurunkan emisi NOx. Sistem dual fuel menggabungkan LPG dan biodiesel B35 sebagai bahan bakar utama dan pemicu pembakaran pada mesin diesel, dengan LPG dicampur udara di mixer sebelum dikompresi dan dibakar bersama biodiesel di dalam silinder. Dengan penambahan sistem internal EGR pada mesin diesel berbahan bakar dual fuel B35-LPG didapatkan peningkatan daya sebanyak 0,52% pada rpm 1400, penurunan daya sebanyak 0,1% pada rpm 1600, dan kenaikan daya sebanyak 1,02% pada rpm 1800. Lalu pada mesin diesel berbahan bakar B35 didapatkan kenaikan daya sebanyak 2,3% pada rpm 1400, kenaikan daya sebanyak 0,44% pada rpm 1600, dan kenaikan daya sebanyak 1,02% pada rpm 1800. Dengan penambahan sistem internal EGR pada mesin diesel berbahan bakar dual fuel B35-LPG didapatkan penurunan emisi NOx sebanyak 55,17% pada rpm 1400, penurunan emisi NOx sebanyak 50,7% pada rpm 1600, dan penurunan emisi NOx sebanyak 58,69% pada rpm 1800. Lalu pada mesin diesel berbahan bakar B35 didapatkan penurunan emisi NOx sebanyak 34,15% pada rpm 1400, penurunan emisi NOx sebanyak 34,4% pada rpm 1600, dan penurunan emisi NOx sebanyak 32,37% pada rpm 1800. Dengan penambahan sistem internal EGR pada mesin diesel berbahan bakar dual fuel B35-LPG didapatkan penurunan getaran pada rpm 1400, kenaikan getaran pada rpm 1600, kenaikan getaran pada rpm 1800, penurunan kebisingan pada rpm 1400, kenaikan kebisingan pada rpm 1600, penurunan kebisingan pada rpm 1800.
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The increasing demand for maritime transportation has driven the use of efficient diesel engines, which, however, face challenges with high NOx emissions. This has encouraged the development of technologies such as EGR, SCR, and others to reduce environmental impacts. The internal EGR system utilizes modifications to the camshaft profile to reopen the exhaust valve after the intake stroke, allowing exhaust gases to recirculate back into the combustion chamber, thereby reducing NOx emissions. The dual-fuel system combines LPG and B35 biodiesel as the primary fuels and combustion triggers in diesel engines, with LPG mixed with air in a mixer before being compressed and burned together with biodiesel in the cylinder.With the addition of an internal EGR system to a diesel engine running on dual fuel (B35-LPG), a power increase of 0.52% was observed at 1400 rpm, a power decrease of 0.1% at 1600 rpm, and a power increase of 1.02% at 1800 rpm. Meanwhile, for a diesel engine running on B35 fuel, a power increase of 2.3% was observed at 1400 rpm, 0.44% at 1600 rpm, and 1.02% at 1800 rpm.The addition of the internal EGR system to the dual-fuel (B35-LPG) diesel engine resulted in a reduction in NOx emissions by 55.17% at 1400 rpm, 50.7% at 1600 rpm, and 58.69% at 1800 rpm. For the diesel engine running on B35 fuel, NOx emissions were reduced by 34.15% at 1400 rpm, 34.4% at 1600 rpm, and 32.37% at 1800 rpm.With the internal EGR system on the dual-fuel (B35-LPG) diesel engine, vibration decreased at 1400 rpm, increased at 1600 rpm, and increased again at 1800 rpm. Noise decreased at 1400 rpm, increased at 1600 rpm, and decreased at 1800 rpm.
| Item Type: | Thesis (Other) |
|---|---|
| Uncontrolled Keywords: | Combustion Analysis, Emission, Vibration, I-EGR, Noise, Combustion Analysis, Emisi, Getaran, I-EGR, Kebisingan |
| Subjects: | 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: | Zsadevivo Calvin Suryawinawan |
| Date Deposited: | 25 Mar 2025 06:40 |
| Last Modified: | 25 Mar 2025 06:40 |
| URI: | http://repository.its.ac.id/id/eprint/118994 |
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