Syadzili, Muhammad Bustomi (2022) Studi Eksperimen Pengaruh Variasi Waktu Injeksi Pilot Fuel (Start Of Injection) B100 Terhadap Performa Dan Emisi Pada Mesin Diesel Berbahan Bakar Campuran Gas Hidrogen – Biodiesel 100. Other thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Kebutuhan energi bahan bakar fosil meningkat tiap tahunnya. penggunaan bahan bakar fosil memberikan kerugian bagi lingkungan. Salah satu sektor yang memiliki tingkat konsumsi bahan bakar fosil terbesar yaitu sektor transportasi. Berdasarkan permasalahan diatas dibutuhkan sumber energi alternatif yang ramah lingkungan, salah satu sumber energi alternatif yang minim digunakan adalah sumber energi biodiesel dari kelapa sawit atau Crude Palm Oil (B100). Bahan bakar B100 selain sifatnya yang terbarukan serta melimpah di indonesia B100 memiliki kelebihan dibanding bahan bakar lainnya yaitu emisi yang dihasilkan biodiesel memilki kandungan lebih sedikit dibanding bahan bakar diesel murni dan tidak mengandung sulfur dan benzena. Akan tetapi B100 juga memiliki beberapa kekurangan yaitu performa yang dihasilkan B100 lebih buruk jika dibanding bahan bakar diesel murni. Bahan bakar gas hidrogen adalah salah satu bahan bakar masa depan yang bersifat ecoenergy dengan beberapa kelebihan pada propertiesnya karena itu dengan dilakukan modifikasi mesin dual fuel menggunakan bahan bakar B100 dan hidrogen serta memvariasikan injection timing diharapkan meningkatkan performa dan mengurangi emisi dari mesin diesel. Penelitian dilakukan dengan memvariasikan injection timing bahan bakar biodiesel oleh pilot jet dengan menggunakan bahan bakar B100 dan hidrogen yang diuji menggunakan mesin diesel DI 8000 yang telah dimodifikasi untuk pemasukan hidrogennya menggunakan Converter kit dan ECU. Variasinya yaitu sebesar 11°,13°,15°,17°,19°,21° (before top dead center) BTDC dan pembebanan lampu dari 1000 Watt – 4000 Watt. eksperimen ini diharapkan mendapatkan injection timing yang optimal dengan mengetahui nilai unjuk kerja yang dinyatakan dalam: daya, torsi, break mean effective pressure (BMEP), specific fuel consumption (SFC), efisiensi thermal, air fuel ratio (AFR), temperatur mesin, temperatur pelumas, temperatur air pendingin, dan temperatur gas buang. emisi gas buang juga diamati dalam setiap variasi injection timing nya untuk mencari variasi yang paling optimum. emisi gas buang yang dicari yaitu HC, CO, dan smoke antara mesin diesel berbahan bakar tunggal (single fuel) B100 dan (dual fuel) B100-gas hidrogen. Hasil yang didapat yaitu melakukan variasi waktu injeksi pilot fuel B100 pada mesin diesel berbahan bakar campuran gas Hidrogen-Biodiesel 100 dengan waktu injeksi standar 13° BTDC didapatkan perbaikan performa unjuk kerja paling optimal pada variasi waktu injeksi 15° BTDC dengan nilai diantaranya yaitu Daya Efektif, Torsi, Brake Mean Effective Pressure (BMEP), Brake Thermal Efficiency (BTE), Air Fuel Ratio dengan peningkatan masing-masing sebesar 0,286%; 0,286%; 0,286%; 4,51%; dan 3,8%. Dan Specific Fuel Consumption, mengalami penurunan sebesar 4,67%. Dan didapatkan perbaikan emisi paling optimal pada variasi waktu injeksi 19° BTDC dengan Dengan hasil uji emisi Karbon Monoksida (CO), Hidrokarbon (HC), Smoke, dan Karbon Dioksida (CO2) mengalami penurunan masing-masing sebesar 31,25%; 56,5%; 6,9%; dan 41.62 %.
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The need for fossil fuel energy is increasing every year. The use of fossil fuels is detrimental to the environment. One of the sectors that has the largest level of consumption of fossil fuels is the transportation sector. Based on the above problems, an alternative energy source that is environmentally friendly is needed, one of the alternative energy sources that is minimally used is biodiesel energy sources from palm oil or Crude Palm Oil (B100). Besides being renewable and abundant in Indonesia, B100 fuel has advantages over other fuels, namely that the emissions produced by biodiesel are less than pure diesel fuel and do not contain sulfur and benzene. However, the B100 also has several drawbacks, namely the performance produced by the B100 is worse than pure diesel fuel Hydrogen gas fuel is one of the future fuels that is ecoenergy with several advantages in its propertiesTherefore, by modifying the dual fuel engine using B100 and hydrogen fuel as well as varying the injection timing, it is expected to improve performance and reduce emissions from diesel engines. The research was conducted by varying the injection timing of biodiesel fuel by pilot jet using B100 and hydrogen fuel which was tested using a DI 8000 diesel engine which had been modified for hydrogen intake using a converter kit and ECU. The variation is 11°,13°,15°,17°,19°,21° (before top dead center) BTDC and lamp loading from 1000 Watt –4000 Watt.Research in this experiment is expected to get the optimal injection timing for each condition by knowing the performance value expressed in: power, torque, break mean effective pressure (BMEP), specific fuel consumption (SFC), thermal efficiency, air fuel ratio (AFR). , engine temperature, lubricant temperature, cooling water temperature, and exhaust gas temperature. Exhaust emissions are also observed in each variation of the injection timing to find the most optimum variation. Exhaust emissions sought are HC, CO, and smoke between single-fuel diesel engines (single fuel) B100 and (dual fuel) B100-hydrogen gas. The results obtained are by varying the injection time of pilot fuel B100 on a diesel engine fueled by a mixture of Hydrogen-Biodiesel 100 gas with a standard injection time of 13° BTDC, the most optimal performance improvement is obtained at the injection time variation of 15° BTDC with values including Effective Power, Torque, Brake Mean Effective Pressure (BMEP), Brake Thermal Efficiency (BTE), Air Fuel Ratio with an increase of 0.286%; 0.286%; 0.286%; 4.51%; and 3.8%, respectively. And Specific Fuel Consumption, decreased by 4.67%. And the most optimal emission improvement was found at the injection time variation of 19° BTDC with the results of the emission test for Carbon Monoxide (CO), Hydrocarbon (HC), Smoke and Carbon Dioxide (CO2) decreased by 31.25%; 56.5%; 6.9%; and 41.62 % respectively.
| Item Type: | Thesis (Other) |
|---|---|
| Additional Information: | RSM 621.43 Sya s-1 2022 |
| Uncontrolled Keywords: | Diesel Dual Fuel, B100, Hidrogen, Injection Timing, Performa, Emisi, Hydrogen, Injection Timing, Performance, Emissions |
| Subjects: | T Technology > TJ Mechanical engineering and machinery > TJ785 Internal combustion engines. Spark ignition |
| Divisions: | Faculty of Industrial Technology and Systems Engineering (INDSYS) > Mechanical Engineering > 21201-(S1) Undergraduate Thesis |
| Depositing User: | Mr. Marsudiyana - |
| Date Deposited: | 20 Feb 2025 06:39 |
| Last Modified: | 20 Feb 2025 06:39 |
| URI: | http://repository.its.ac.id/id/eprint/118827 |
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