Internal Combustion Engines, Alternative Fuels for

Wallner, Thomas; Miers, Scott A.

doi:10.1007/978-1-4419-0851-3_865

Cited by 3 publications

(3 citation statements)

References 62 publications

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“…When using mixtures with BF contents of 25, 50, 75 and 100%, the acceleration time of the diesel crankshaft increases by 3.9, 7.5, 10.8 and 13.95%, respectively. Considering the fact that the diesel generator constantly works at a stable frequency of rotation of the crankshaft, changing the acceleration dynamics of the diesel engine will not affect its operation in any way (Wallner and Miers 2012;Honcharuk et al 2023;Pryshliak et al 2022).…”

Section: Methodsmentioning

confidence: 99%

Environmental indicators of the operation of a diesel generator running on a mixture of biofuels

Galushchak,

Burlaka,

Kupchuk

et al. 2023

Polityka Energetyczna – Energy Policy Journal

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Environmental indicators of the operation of a dieselgenerator running on a mixture of biofuelsАbstract: The article examines the environmental performance of a diesel generator that runs on a biofuel mixture. Biofuels are considered to be more environmentally friendly than traditional petroleum products and have become popular alternatives in the field of electricity production. To reduce dependence on petroleum fuels and decrease harmful exhaust-gas emissions from diesel generators, it is suggested to use biodiesel fuel and its mixture with diesel fuel. Various environmental indicators were measured and analyzed in this study, including the emissions of harmful substances, carbon dioxide, nitrogen oxides and particulates. By using biofuels, pollutant emissions are expected to be reduced because biofuels are made from renewable sources such as vegetable oils or biomass.The results of the study show that the use of a biofuel mixture in a diesel generator leads to a signi-ficant reduction in the emission of harmful substances compared to the use of traditional petroleum products. A reduction in the emissions of carbon dioxide and nitrogen oxides was found, which contributes to a reduction of the impact on climate change and air pollution. In addition, a decrease in particle emissions was noted, which contributes to the improvement of air quality and people's health.The goal was achieved by researching the impact of a mixture of diesel and biodiesel fuel on the technical, economic and environmental indicators of an autonomous diesel generator. The regulation of the composition of the fuel mixture ensured the preservation of the power of the generator in all its modes of operation, while reducing the cost of purchasing fuel by 10% and reducing the smokiness of exhaust gas by up to 57%, depending on the mode of operation of the diesel engine.

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Section: Methodsmentioning

confidence: 99%

Environmental indicators of the operation of a diesel generator running on a mixture of biofuels

Galushchak,

Burlaka,

Kupchuk

et al. 2023

Polityka Energetyczna – Energy Policy Journal

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“…The existing power-trains with conventional fuels are expected to be replaced by bio-fuels or low carbon fuels such as natural gas, liquid petroleum gas, methanol, hydrogen, synthetic fuels, E-fuels, etc. [ 1 , 2 , 3 , 4 ]. Additionally, the battery operated electric vehicles (BEVs) are considered to be promising and cleaner transport alternative.…”

Section: Introductionmentioning

confidence: 99%

Estimation of Entropy Generation in a SCR-DeNOx System with AdBlue Spray Dynamic Using Large Eddy Simulation

Nishad

Agrebi

2023

Entropy

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In this work, the entropy generation analysis is extended to the multi-phase fluid flow within a Large Eddy Simulation (LES) framework. The selected study case consists of a generic selective catalytic reduction (SCR) configuration in which the water/AdBlue is injected into a cross-flow of the internal combustion (IC) engine exhaust gas. The adopted numerical modules are first assessed by comparing with experimental data for film thickness in the case of AdBlue injection and then with H2O mass fraction and temperature for water injection case. Subsequently, the impact of heat transfer, fluid flow, phase change, mixing and chemical reaction due to AdBlue injection on the entropy generation is assessed. Hence, the individual contributions of viscous and heat dissipation together with the species mixing, chemical reaction during the thermal decomposition of urea into NH3 and dispersed phase are especially evaluated and analysed. In comparison to the shares of the viscous and mixing processes, the entropy generation is predominated by the heat, chemical and dispersed phase contributions. The influence of the operating parameters such as exhaust gas temperature, flow rate and AdBlue injection on entropy generation is discussed in details. Using a suitable measures, the irreversibility map and some necessary inferences are also provided.

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“…These challenges are being addressed either by replacing the existing power-train in battery electric vehicles (BEVs) or by operating ICEVs with so-called carbonneutral fuels such as: bio-fuels or low carbon fuels such as hydrogen, natural gas, liquid petroleum gas, methanol, and synthetic fuels such as E-fuels, etc. Moreover, the complete replacement of traditional power-trains (ICEVs) by battery-operated engines (BEVs) is not foreseeable in the near future, rather, multiple power-trains will coexist [1], with more and more focus on the usage of carbon-neutral fuels on existing power-trains [2][3][4][5]. Thereby, it is still imperative to enhance incylinder technology, also for the new fuels, together with the deployment of more advanced exhaust gas after-treatment systems (EGAS).…”

Section: Introductionmentioning

confidence: 99%

Prediction of Heat Transfer and Fluid Flow Effects on Entropy Generation in a Monolithic Catalytic Converter Using Large-Eddy Simulation

Cortes

Hamel

et al. 2022

Entropy

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In the present work, heat transfer and fluid flow and their effects on entropy generation in a realistic catalytic converter of a Lada Niva 21214 vehicle are studied using large eddy simulation. At first, the pressure drop over the catalytic converter is measured for dry air at constant temperature (T=298 K), different volumetric flow rates, and extrapolated to large volumetric flow rates for dry air (T=298 K) and for the exhaust gas under realistic engine conditions (T=900 K) using the Darcy–Forchheimer relation. Then, coupled heat and fluid flow phenomena inside the catalytic converter are analyzed for nonreacting isothermal conditions and nonreacting conditions with conjugate heat transfer by using the large-eddy simulation. The predicted pressure drop agrees well with the measured and extrapolated data. Based on the obtained numerical results, the characteristic flow features are identified, namely: the impinging flow with stagnation, recirculation, flow separation and laminarization within the fine ducts of the monolith, which depends on the heat transfer through temperature-dependent thermophysical properties of exhaust gas. Moreover, due to high-velocity gradients at the wall of the narrow ducts in the monolith, entropy production by viscous dissipation is observed predominantly in the monolith region. In contrast, entropy production due to heat transport is relatively small in the monolith region, while it overwhelms viscous dissipation effects in the pipe regions.

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Internal Combustion Engines, Alternative Fuels for

Cited by 3 publications

References 62 publications

Environmental indicators of the operation of a diesel generator running on a mixture of biofuels

Environmental indicators of the operation of a diesel generator running on a mixture of biofuels

Estimation of Entropy Generation in a SCR-DeNOx System with AdBlue Spray Dynamic Using Large Eddy Simulation

Prediction of Heat Transfer and Fluid Flow Effects on Entropy Generation in a Monolithic Catalytic Converter Using Large-Eddy Simulation

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