Identifying Unregulated Emissions from Conventional Diesel Self-Ignition and PPCI Marine Engines at Full Load Conditions

Wang, Xi; Wang, Minfei; Han, Yunsheng; Chen, Hanyu

doi:10.3390/jmse8020101

Cited by 6 publications

(3 citation statements)

References 37 publications

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“…The current solutions for optimizing the combustion phase mainly include new combustion modes and advanced combustion systems. The former includes premixed compression ignition (PCCI), low temperature combustion (LTC) engine modes [1][2][3], and the latter includes changing fuel injection. starting point, fuel injection amount and intake pressure [4,5].…”

Section: Introductionmentioning

confidence: 99%

Modeling Method of Engine Zero-dimensional Combustion Model Based on PSO Algorithm Optimization

Wang

et al. 2023

J. Phys.: Conf. Ser.

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To improve the low accuracy of the zero-dimensional combustion model established by BP-NN, a particle swarm-neural network (PSO-NN) algorithm was proposed. The PSO optimize weights and thresholds of NN, and the operating and combustion parameters are constructed, and then compared with NN algorithm. The results show that comparing with NN algorithm, the zero-dimensional combustion model constructed by PSO-NN algorithm has higher prediction accuracy, and the mean square error of the main combustion period m is 0.0034, which is 78.21% lower than that before optimization. The particle swarm algorithm has quicker convergence and stronger versatility, which is suitable for the study of diesel engine 0-D model.

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Section: Introductionmentioning

confidence: 99%

Modeling Method of Engine Zero-dimensional Combustion Model Based on PSO Algorithm Optimization

Wang

et al. 2023

J. Phys.: Conf. Ser.

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“…New ignition methods are among the many options presented in this direction, and HCCI, 13 , 14 PPCI, 15 , 16 and LTC engines have emerged. 17 , 18 Several researchers have also added small proportions of variable types of nanoadditives to the diesel fuel in order to improve combustion characteristics and reduce pollutants.…”

Section: Introductionmentioning

confidence: 99%

“…New ignition methods are among the many options presented in this direction, and HCCI, , PPCI, , and LTC engines have emerged. , Several researchers have also added small proportions of variable types of nanoadditives to the diesel fuel in order to improve combustion characteristics and reduce pollutants. , Some important studies mixed diesel fuel with water to form an emulsion that takes advantage of hydrogen and aqueous oxygen atoms in the combustion. , Since the nineties of the last century until today, studies are continuing to add many types of biofuels to diesel because this fuel is produced from natural sources as it is an oxygenator that contains in its chemical composition oxygen that improves the combustion process inside the combustion chamber. , …”

Section: Introductionmentioning

confidence: 99%

Ultralow Sulfur Diesel and Rapeseed Methyl Ester Fuel Impact on Performance, Emitted Regulated, Unregulated, and Nanoparticle Pollutants

et al. 2022

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The operation of engines using rapeseed methyl ester (RME) and ultralow sulfur diesel (ULSD) was tested for the combustion properties, emitted regulated, unregulated exhaust pollutants, and the size of nanoparticles. The combustion analysis showed higher apparent heat release rate and shorter ignition delay period during RME combustion than during ULSD combustion. The ULSD engine has a combustion chamber maximum pressure relatively higher than that of RME. This study showed that the heat release rate of ULSD is always higher than that of RME while more fuel consumption occurred from the combustion of biodiesel in comparison with diesel. When the engine is running on RME, HC and NOx formation increased at high loads up to 15% and 13%, respectively; meanwhile, CO concentrations reduced by 30.9% for the same conditions. Most of the particulate matter (PM) emitted from a diesel engine has a particle size from 5 to 100 nm, while the particle size from ULSD ranged from 5 to 40 nm. Overloading the engine caused a decrease in the sizes of emitted PM for both fuels. The smoke number for RME was less than that for ULSD by 33.9% at high loads. For high engine load, the cumulative concentration number for the nucleation mode decreased, while it increased for the accumulation mode. Furthermore, measurements of formaldehyde, ethane, methane, acetylene, ethylene, propylene, and isocyanic acid emissions showed the presence of these harmful substances at very low concentrations (8 ppm) for both fuels.

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Processing of metal-free end-of-life tyres (EOLTs) to fuels and products: an experimental study with process simulation and economic analysis from an Australian perspective

Kibria,

Thomas,

Bhattacharya

et al. 2024

Clean Techn Environ Policy

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The aim of this experimental study, process simulation and economic analysis is to assess the applicability of pyrolysis technology for processing end-of-life tyres and to evaluate the economic viability of a 60 ton/day EOLT processing facility: a case-specific study within Australia. The experimental work and characterization of feedstock and products were carried out in-house. Capital costs for major equipment were collected from suppliers. The running cost of the processing facility is calculated on the basis of the current labour and utility costs. An economic model is developed based on the information generated from the experimental program and those obtained from suppliers. From the analysis, it is evident that the pyrolysis process for processing EOLT promises a significant upside in economic terms. A conservative conclusion of 20% light oil, ~ 65% furnace oil and 7% carbon black, generated as pyrolysis products, depicts a cash-flow positivity for a 60 tonne per day (TPD) plant that can be run using the generated fuel gas for under 4 years. This is in addition to the benefit of the zero landfill requirement. Apart from the base calculations, the sensitivity of six different scenarios is analysed by mainly changing the land cost and bank investment. Depending on the scenario, the calculated internal rate of return varies between 15 and 35%. While Australia generates significant quantities of EOLT, the techno-economic results confirm that pyrolysis technology for processing EOLT is a viable solution in Australia. However, a dedicated supply chain needs to exist to make pyrolysis plants an attractive investment at defined locations. Graphical abstract

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Identifying Unregulated Emissions from Conventional Diesel Self-Ignition and PPCI Marine Engines at Full Load Conditions

Cited by 6 publications

References 37 publications

Modeling Method of Engine Zero-dimensional Combustion Model Based on PSO Algorithm Optimization

Modeling Method of Engine Zero-dimensional Combustion Model Based on PSO Algorithm Optimization

Ultralow Sulfur Diesel and Rapeseed Methyl Ester Fuel Impact on Performance, Emitted Regulated, Unregulated, and Nanoparticle Pollutants

Processing of metal-free end-of-life tyres (EOLTs) to fuels and products: an experimental study with process simulation and economic analysis from an Australian perspective

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