Parametric Analysis of the Combustion Cycle of a Diesel Engine for Operation on Natural Gas

Lebedevas, Sergėjus; Čepaitis, Tomas

doi:10.3390/su13052773

Cited by 13 publications

(31 citation statements)

References 45 publications

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“…The leading salp position is given in Equation (20). In this equation, X 1 j is the position of the leading scallop in the j-th dimension, F j is the food source position in the j-th dimension, c 1 , c 2 , c 3 are random numbers, u bj is the upper bound in the j-th dimension, and l bj is the j-th dimensional indicating the lower limit.…”

Section: Salp Swarm Optimization Algorithm (Sso)mentioning

confidence: 99%

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Optimization of Laminar Boundary Layers in Flow over a Flat Plate Using Recent Metaheuristic Algorithms

2022

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Heat transfer is one of the most fundamental engineering subjects and is found in every moment of life. Heat transfer problems, such as heating and cooling, where the transfer of heat between regions is calculated, are problems that can give exact solutions with parametric equations, many of which were obtained by solving differential equations in the past. Today, the fact that heat transfer problems have a more complex structure has led to the emergence of multivariate models, and problems that are very difficult to solve with differential equations have emerged. Optimization techniques, which are also the subject of computer science, are frequently used to solve complex problems. In this study, laminar thermal boundary layers in flow over a flat plate, a sub-problem of heat transfer, is solved with recent metaheuristic algorithms. Teaching learning-based optimization (TLBO), sine cosine optimization (SCO), gray wolf optimization (GWO), whale optimization (WO), salp swarm optimization (SSO), and Harris hawk optimization (HHO) algorithms are used in the study. In the optimization problem, the laminar boundary layer thickness, heat flow, and distance from the leading edge are determined. These three models’ minimum, maximum, and target values are found under the specified design variables and constraints. In the study, 540 optimization models are run, and it is seen that HHO is the most suitable optimization technique for heat transfer problems. Additionally, SSO and WO algorithms gave results close to HHO. Other algorithms also set model targets with an average of less than 0.07% and acceptable error rates. In addition, the average problem solution time of all optimization algorithms and all models was 0.9 s. To conclude, the recent metaheuristic algorithms are found to be powerful and fast in solving heat transfer problems.

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Section: Salp Swarm Optimization Algorithm (Sso)mentioning

confidence: 99%

“…Apart from the studies mentioned above, many studies involve heat transfer optimization [16][17][18][19][20][21][22]. When evaluated in general, it has been seen that numerical optimization solutions and basic heuristic optimization techniques are used in heat transfer.…”

Section: Introductionmentioning

confidence: 99%

Optimization of Laminar Boundary Layers in Flow over a Flat Plate Using Recent Metaheuristic Algorithms

2022

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“…One of the directions for reducing exhaust emissions is the use of alternative fuels. In this area, research on Liquified Petroleum Gas (LPG) is popular in many countries [15,24,25], as well as biogas [20], natural gas [26,27], Compressed Natural Gas (CNG) [28][29][30] and Liquified Natural Gas (LNG) [31,32]. Interesting studies have been presented on alternative fuels to diesel, as well as mixtures of both, inter alia, [33][34][35][36][37][38][39].…”

Section: Introductionmentioning

confidence: 99%

Comparative Study of Combustion, Performance and Emission Characteristics of Hydrotreated Vegetable Oil–Biobutanol Fuel Blends and Diesel Fuel on a CI Engine

et al. 2022

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This article is a study of Hydrotreated Vegetable Oil and Butanol Fuel blends, which are mixed in three different proportions (HVOB5, HVOB10 and HVOB20), and the comparison of their combustion (in-cylinder pressure, pressure rise and ROHR), performance (fuel consumption, BSFC and BTE) and emission (CO2, NOX, HC and Smoke) characteristics with those of fossil diesel fuel. In the wake of finding an alternative fuel that requires little to zero modifications to the existing IC engines, it is necessary to account for the necessity of matching the efficiency of conventional fuels as well as greatly reducing its exhaust emissions. As a result of transesterification, HVO is found to have better stability and higher CN compared to other biofuels. It is termed a “renewable diesel” due to its ability to reduce emissions while maintaining efficiency. HVO as a fuel has higher cost efficiency, and for a more stable oxygen content in the fuel, an alcohol substitute is needed. Butanol, which has a considerable advantage over other alcohols due to its higher density, viscosity and CN, is selected. HVOB5 and HVOB10 are found to match diesel fuel in terms of fuel consumption while having a ~1% lesser efficiency. In terms of emissions, all the fuel mixtures including HVO100 are found to have ~4–5% lesser CO2, ~10–15% lesser NOX and a ~25–45% reduction in smoke levels.

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“…A lot of research is carried out in the area of using various fuels to power internal combustion engines. Among these studies, it is worth mentioning the works related to the use of popular gaseous fuels such as LPG [7,8], biogas [9], natural gas [10,11], CNG and LNG [12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

The Performance of a Car with Various Engine Power Systems – Part II

Slavin¹,

Shuba

Caban

et al. 2022

LOGI – Scientific Journal on Transport and Logistics

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Reducing exhaust emissions from motor vehicles has become a major task in the design of modern motor vehicles. Internal combustion engines, despite the increasingly frequent restrictions on, for example, entry to city centers, still constitute the majority of the used motor vehicles. For these reasons, it is very important to properly operate and control the used motor vehicles, especially in the field of exhaust emissions. One way is to replacement of the vehicle fleet and individual cars with newer generation vehicles. Unfortunately, due to economic differences in the world, the rolling stock replacement process is not the same in all countries. However, despite these differences, even in less developed countries, efforts are being made to reduce vehicle emissions. This work presents road, bench and computational comparative tests of the fuel, economic, environmental and energy characteristics of a series car with a standard carburetor supply system and equipped with an electronic gasoline injection system and a three-component catalyst under operating conditions.

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Parametric Analysis of the Combustion Cycle of a Diesel Engine for Operation on Natural Gas

Cited by 13 publications

References 45 publications

Optimization of Laminar Boundary Layers in Flow over a Flat Plate Using Recent Metaheuristic Algorithms

Optimization of Laminar Boundary Layers in Flow over a Flat Plate Using Recent Metaheuristic Algorithms

Comparative Study of Combustion, Performance and Emission Characteristics of Hydrotreated Vegetable Oil–Biobutanol Fuel Blends and Diesel Fuel on a CI Engine

The Performance of a Car with Various Engine Power Systems – Part II

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