Pengaruh Penggunaan Internal EGR Pada Mesin Dual Fuel CNG Terhadap Performa Dan Methane Slip Pada Mesin Diesel 1 Silinder

Pratama, Yanuar Fuad (2025) Pengaruh Penggunaan Internal EGR Pada Mesin Dual Fuel CNG Terhadap Performa Dan Methane Slip Pada Mesin Diesel 1 Silinder. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Penggunaan bahan bakar fosil yang meningkat telah memicu masalah lingkungan seperti polusi udara dan pemanasan global, mendorong pencarian alternatif bahan bakar yang lebih bersih dan efisien. Salah satu solusi potensial adalah teknologi dual fuel berbasis Compressed Natural Gas (CNG), yang mampu mengurangi emisi gas buang dan biaya operasional. Namun, penerapan teknologi ini menghadapi tantangan seperti methane slip, yaitu pelepasan metana yang tidak terbakar sepenuhnya, serta pengoptimalan performa mesin. Penelitian ini bertujuan untuk menganalisis pengaruh variasi camshaft dan penerapan Internal Exhaust Gas Recirculation (iEGR) terhadap performa dan emisi mesin diesel berbahan bakar B35 dan dual fuel CNG. Hasil penelitian menunjukkan bahwa camshaft modifikasi, khususnya Camshaft 3, memberikan performa terbaik dengan daya tertinggi, mencapai 1562 Watt pada RPM 1400 B35 dan 2569 Watt pada RPM 1800 dual fuel, serta efisiensi termal tertinggi sebesar 36% pada RPM 1600 dual fuel. Dari segi emisi, Camshaft 3 mencatat NOx terendah, yaitu 178 ppm pada RPM 1400 dual fuel dan 202 ppm pada RPM 1800 dual fuel, sekaligus methane slip terendah di kisaran 21–22 ppm. Penelitian ini menegaskan bahwa kombinasi teknologi dual fuel CNG, camshaft modifikasi untuk Internal EGR mampu meningkatkan performa mesin sekaligus mengurangi emisi yang berdampak pada lingkungan, menjadikannya solusi yang menjanjikan dalam menghadapi tantangan regulasi emisi yang semakin ketat.
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The increasing use of fossil fuels has led to environmental issues such as air pollution and global warming, driving the search for cleaner and more efficient fuel alternatives. One promising solution is dual fuel technology using Compressed Natural Gas (CNG), which can reduce exhaust emissions and operational costs. However, the implementation of this technology faces challenges such as methane slip, where unburned methane is released, and the optimization of engine performance. This study aims to analyze the impact of camshaft variations and the application of Internal Exhaust Gas Recirculation (iEGR) on the performance and emissions of diesel engines fueled with B35 and dual fuel CNG. The findings reveal that modified camshafts, particularly Camshaft 3, deliver the best performance with the highest power output, reaching 1562 watts at 1400 RPM on B35 fuel and 2569 watts at 1800 RPM in dual fuel mode, as well as the highest thermal efficiency of 36% at 1600 RPM in dual fuel mode. In terms of emissions, Camshaft 3 recorded the lowest NOx levels at 178 ppm at 1400 RPM and 202 ppm at 1800 RPM in dual fuel mode, along with the lowest methane slip, ranging between 21–22 ppm. This study confirms that the combination of dual fuel CNG technology, modified camshafts, and Internal EGR can significantly enhance engine performance while reducing environmental impacts, making it a promising solution to meet increasingly stringent emission regulations.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Camshaft, CNG, Mesin Dual fuel, iEGR, Methane Slip, Dual fuel Engine, iEGR, Methane Slip
Subjects:	V Naval Science > VM Naval architecture. Shipbuilding. Marine engineering > VM276.A1 Fuel (Including supplies, costs, etc.) V Naval Science > VM Naval architecture. Shipbuilding. Marine engineering > VM471 Ships--Electric equipment 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:	Yanuar Fuad Pratama
Date Deposited:	03 Feb 2025 03:01
Last Modified:	03 Feb 2025 03:01
URI:	http://repository.its.ac.id/id/eprint/117709

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