Combustion Performance and Emission Characteristics of Marine Engine Burning with Different Biodiesel

Ning Yang, Xiaowen Deng, Bin Liu, Liwei Li, Yuan Li, Peng Li, Miao Tang and Lin Wu
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Ning Yang: Tianjin Eco-Environmental Monitoring Center, Tianjin 300191, China
Xiaowen Deng: Tianjin Eco-Environmental Monitoring Center, Tianjin 300191, China
Bin Liu: Tianjin Eco-Environmental Monitoring Center, Tianjin 300191, China
Liwei Li: Tianjin Eco-Environmental Monitoring Center, Tianjin 300191, China
Yuan Li: Tianjin Eco-Environmental Monitoring Center, Tianjin 300191, China
Peng Li: Tianjin Eco-Environmental Monitoring Center, Tianjin 300191, China
Miao Tang: Tianjin Eco-Environmental Monitoring Center, Tianjin 300191, China
Lin Wu: Tianjin Key Laboratory of Urban Transport Emission Research & State Environmental Protection Key Laboratory of Urban Ambient Air Particulate Matter Pollution Prevention and Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300071, China

Energies, 2022, vol. 15, issue 14, 1-17

Abstract: Ship emissions are one of the main sources of air pollution in port cities. The prosperous maritime trade has brought great harm to the air quality of port cities while promoting the development of the world economy. During the berthing process, ship auxiliary machines emit a large amount of air pollutants, which have a great impact on air quality and public health. Alternative marine fuels are being studied and used frequently to reduce ship emissions. This research was carried out to investigate the gaseous and particles emission characteristics of a marine diesel engine during the application of experimental biodiesel fuels. To study the influence of mixed fuels on engine performance, measurements were made at different engine loads and speeds. Different diesel fuels were tested using various ratios between biodiesel and BD0 (ultra-low sulfur diesel) of 0%, 10%, 30%, 50%, 70%, 90%, and 100%. The results indicated the use of biodiesel has little influence on the combustion performance but has a certain impact on exhaust emissions. The octane number and laminar flame speed of biodiesel are higher than those of BD0, so the combustion time of the test diesel engine is shortened under the mixed mode of biodiesel. In addition, a high ratio of biodiesel leads to a decrease of the instantaneous peak heat release rate, causing the crank angle to advance. As the biodiesel blending ratio increased, most of the gaseous pollutants decreased, especially for CO, but it led to an increase of particle numbers. The particle size distribution exhibits a unimodal distribution under various conditions, with the peak value appearing at 30–75 nm. The use of biodiesel has no effect on this phenomenon. The peak positions strongly depend on fuel types and engine conditions. The particulate matter (PM) emitted from the test engine included large amounts of organic carbon (OC), which accounted for between 30% and 40% of PM. Whereas the elemental carbon (EC) accounted for between 10% and 20%, the water-soluble ions components accounted for 6–15%. Elemental components, which accounted for 3–8% of PM emissions, mainly consisted of Si, Fe, Sn, Ba, Al, Zn, V, and Ni. Generally, biodiesel could be a reliable alternative fuel to reduce ship auxiliary engine emissions at berth and improve port air quality.

Keywords: ship emissions; combustion performance; biodiesel; particle size distribution; organic carbon (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (4)

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