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Energies 2018, 11(7), 1830; https://doi.org/10.3390/en11071830

Study on Combustion and Emission Characteristics of Marine Diesel Oil and Water-In-Oil Emulsified Marine Diesel Oil

1
Department of Environmental Engineering, Cheongju University, Chungbuk 28503, Korea
2
Division of Marine Engineering, Mokpo National Maritime University, Mokpo 58628, Korea
3
Department of Mechanical Systems Engineering for Energy Convergence Dongshin University, Jeonnam 58245, Korea
*
Author to whom correspondence should be addressed.
Received: 17 June 2018 / Revised: 1 July 2018 / Accepted: 6 July 2018 / Published: 12 July 2018
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Abstract

Compression ignition engines used as marine engines are the most efficient internal combustion engines. They are well-established products, and millions are already on the market. Water-in-MDO (marine diesel oil) emulsions are the best alternative fuel for compression ignition engines and can be utilised with the existing setup of 2.0 L automotive common rail direct injection (CRDI) engines. They have benefits for the simultaneous reduction of both NOx and smoke (black carbon). Furthermore, they have a significant impact on the improvement of combustion efficiency. Micro-explosions are the most important phenomenon of water-in-diesel emulsions inside an internal combustion engine chamber. They affect both the emission reduction and combustion efficiency improvements directly and indirectly in accordance with the brake mean effective pressure (BMEP) and rpm. Owing to the influence of micro-emulsions on the combustion and emissions of water-in-diesel emulsion fuel, the reduction ratios of NOx and smoke in a used engine are approximately 30% and 80%, respectively. The effect of the operating parameters on micro-emulsions is presented. View Full-Text
Keywords: micro-explosions; CRDI engine; emulsion; water-in-MDO emulsion; marine diesel oil (MDO) micro-explosions; CRDI engine; emulsion; water-in-MDO emulsion; marine diesel oil (MDO)
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Kim, M.; Oh, J.; Lee, C. Study on Combustion and Emission Characteristics of Marine Diesel Oil and Water-In-Oil Emulsified Marine Diesel Oil. Energies 2018, 11, 1830.

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