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Simulation of the performance of marine genset based on double-Wiebe function
Published in Petar Georgiev, C. Guedes Soares, Sustainable Development and Innovations in Marine Technologies, 2019
M. Tadros, M. Ventura, C. Guedes Soares
The numerical model of the marine diesel engine MAN 5L16/24 is developed using Ricardo Wave as 1D engine simulation software to calculate the performance of the engine for a given load range varying from 25% to 75% and a constant speed (1,200 RPM), where the atmospheric initial conditions, turbocharger, intercooler, intake and exhaust systems, fuel injectors and geometry of engine cylinders are taking into account during the establishment of the engine model. The marine diesel oil (MDO) is the fuel type used with 42.8 MJ/kg lower heating value (LHV).
Chemical characterization of combustion engine exhaust and assessment of helicopter deck operator occupational exposures on an offshore frigate class ship
Published in Journal of Occupational and Environmental Hygiene, 2023
Stine Eriksen Hammer, Hanne Line Daae, Karoline Kåsin, Kristin Helmersmo, Vincent Simensen, Nils Petter Skaugset, Erlend Hassel, Erika Zardin
In occupational settings where diesel engines are used, EC is commonly regarded as the marker for DE particulate matter (PM) (Birch and Cary 1996; Birch 2002). Nitrogen dioxide and CO have been widely used as markers for the gas phase, even though these are nonspecific compounds present in many occupational settings (Pronk et al. 2009; Hedmer et al. 2017). The composition of DE depends on several parameters such as fuel type, engine type and load, combustion temperatures, and type and efficiency of aftertreatment (Zhang et al. 2021). Aftertreatment of DE in the marine sector is mainly based on selective catalytic reduction technology, which reduces NOx emissions (Zhu et al. 2022). The two conventional diesel fuel types used for marine operations are heavy fuel oil (HFO) and marine diesel oil (MDO) (Chu Van et al. 2019), the main difference being sulfur content. Diesel engines running at optimal design capacity typically have the lowest emissions of unburnt fuel (OC). When idling or operating at low engine loads, diesel engines typically have higher OC, CO, and VOC emissions (Cooper 2001; 2003).
Functional influence of depressor and depressor-dispersant additives on marine fuels and their distillates components
Published in Petroleum Science and Technology, 2018
Natalia K. Kondrasheva, Viacheslav A. Rudko, Dmitrey O. Kondrashev, Rostislav R. Konoplin, Ksenia I. Smyshlyaeva, Viktoria S. Shakleina
In world’s practice, there are two main classifications of the marine fuels: residuals or Intermediate Fuel Oil (IFO) and distillates or Marine Diesel Oil (MDO) or Marine Gas Oil (MGO). Residuals are referred to the high-viscosity marine fuels and distillates are to the low-viscosity marine fuels. The blend composition of the former one is bottom fractions compounded with middle and heavy distillates, while the latter ones are the mixture of middle distillates derived from primary and advanced oil refinery processes (Reders and Mundt 2000; Elvers 2008; Srivastava and Hancsok 2014).