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All Journal International Journal of Marine Engineering Innovation and Research
Abidin, Muayyad Zainal
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Automotive Engineering Control & Systems Engineering Decision Sciences, Operations Research & Management Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics Transportation

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Engine Combustion Performance and Emission of a Dual-Fuel NH3-B100 in Yanmar TF-85 Abidin, Muayyad Zainal; Fathallah, Aguk Zuhdi M.
International Journal of Marine Engineering Innovation and Research Vol. 11 No. 1 (2026): In Progress
Publisher : Department of Marine Engineering, Institut Teknologi Sepuluh Nopember

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Abstract

This study investigates the combustion characteristics, engine performance, and emission behavior of an ammonia–biodiesel (NH₃–B100) dual-fuel compression-ignition engine based on a Yanmar TF-85 diesel platform using a combined experimental and numerical approach. Three-dimensional (3D) in-cylinder combustion simulations were performed using ANSYS Forte, while overall engine performance was evaluated through a one-way 3D-1D coupling framework integrated with MATLAB. Baseline single-fuel B100 operation was first validated against experimental measurements, yielding prediction errors below [6%] for engine power, confirming the reliability of the simulation model. After validation, ammonia was introduced through intake manifold injection to establish dual-fuel operation. The results indicate that ammonia substitution delays combustion phasing and reduces the peak heat release rate by approximately [22%], leading to decreases in indicated mean effective pressure and brake power of [30%] and an increase in specific fuel consumption of [30%]. In terms of emissions, carbon-related species were reduced, with CO₂ and CO decreasing by up to [60%] and [50%], respectively, whereas NOₓ emissions increased by [20%], and measurable NH₃ slip was observed under high ammonia energy fractions. Overall, the proposed 3D–1D modeling framework provides an accurate and computationally efficient tool for evaluating ammonia–biodiesel dual-fuel strategies and supports the development of low-carbon marine diesel engines.
Co-Authors Fathallah, Aguk Zuhdi M.