The model of combustion process in the marine 4-stroke engine for exhaust gas composition assessment

Kowalski, Jerzy

doi:10.19206/ce-2016-208

Cited by 4 publications

(4 citation statements)

References 23 publications

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“…Model is developed by the heat transfer and turbulent flow models. Closer parameters of the model and its validation was presented in [14]. During laboratory tests the engine was operated with the SOI equals 18 degrees BTDC and delayed SOI to 13.5 degrees BTDC also.…”

Section: Methodsmentioning

confidence: 99%

“…During laboratory tests the engine was operated with the SOI equals 18 degrees BTDC and delayed SOI to 13.5 degrees BTDC also. The model, presented in [14] was validated for fuel injection delaying also. Prepared model for delayed SOI calculates maximum combustion pressure (pick pressure) with 6.2% error and mean combustion pressure with 2.8% error.…”

Section: Methodsmentioning

confidence: 99%

“…The NO x fraction is calculated as a sum of the nitric oxide and the nitric dioxide in this model. It should be noted that model of NO x formation consisted of thermal and prompt mechanisms with NO oxidation [14]. Considered delaying of the SOI causes decrease of the NO x fraction in the combustion chamber at the end of the combustion process from 1760 ppm to 520 ppm.…”

Section: Fig 1 Fuel Mass Evaporation and Ignition Delaymentioning

confidence: 99%

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The CFD analysis of influence the start of fuel injection (SOI) on combustion parameters and exhaust gas composition of the marine 4-stroke engine

Kowalski¹

2019

Combustion Engines

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The paper presents a theoretical analysis of the impact of injection timing on the parameters of the combustion process and the com-position of exhaust gas from a 4-stroke engine designed to shipbuilding. The analysis was carried out based on a three-dimensional multi-zone model of the combustion process. This model has been prepared on the basis of properties of the research facility. The input data to the model were obtained through laboratory tests. Results of calculations showed that the change of the start of injection angle (SOI) from the value of 14 degrees before TDC to 22 degrees before TDC results in changes in the combustion rate and thus an increase in the temperature of the combustion process as well as the increase of nitric oxides fraction in the exhaust gas. Simultaneously the maximum combustion pressure increases also.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Fig 1 Fuel Mass Evaporation and Ignition Delaymentioning

confidence: 99%

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The CFD analysis of influence the start of fuel injection (SOI) on combustion parameters and exhaust gas composition of the marine 4-stroke engine

Kowalski¹

2019

Combustion Engines

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“…An example of research aimed at developing diagnostic methods for evaluating the technical condition of diesel engines based on acoustic emission, are works carried out at the Gdansk University of Technology [5]. Teams from the Naval Academy in Gdynia [6,7] and the University of Coruña in Spain [12] are engaged, among others, in research work on gas-dynamic modeling, too. Another approach to the problem of evaluation of the technical condition of the engine ZSE is taking into account some energy parameters of the generator (e.g.…”

Section: Introductionmentioning

confidence: 99%

Problems of Mathematical Modeling of the Marine Diesel Engine Working Cycle for the Diagnostic Purposes

Cwalina

Kniaziewicz

Zacharewicz

2015

SSP

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In the paper the first phase of a mathematical model construction of processes occurring in the cylinder during the working cycle of marine internal combustion engine is presented. The physical model of the mechanical and thermodynamic processes taking place when marine diesel engine drives a synchronous generator is described. In addition, assumptions of the mathematical model developed for marine engine diagnostics are discussed. The input parameters of the model and some simplifying assumptions have been presented. In parallel with the mathematical model, a computer program was created to facilitate carrying out the calculations. Descriptions of the mathematical model and a computer program are illustrated by means of graphs of selected parameters of combustion engine as a function of rotation angle of the crankshaft.

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Fuel systems of high power stationary engine

Kneba¹

2023

Combustion Engines

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The use of alternative fuels and, in the future, synthetic fuels has forced changes in the design of fuel supply systems in internal combustion engines. When operating a stationary engine at constant load, the possibility of using lean fuel mixtures appears. Selection of a precisely operating mixture ignition system requires changes in traditional fuel systems. The article presents the current designs of fuel supply systems and their properties. Attention was paid to operating parameters resulting in acceptable emissions of toxic exhaust gas components. Control systems that make the operation of the fuel system dependent on the properties of fuels are being developed.

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The model of combustion process in the marine 4-stroke engine for exhaust gas composition assessment

Cited by 4 publications

References 23 publications

The CFD analysis of influence the start of fuel injection (SOI) on combustion parameters and exhaust gas composition of the marine 4-stroke engine

The CFD analysis of influence the start of fuel injection (SOI) on combustion parameters and exhaust gas composition of the marine 4-stroke engine

Problems of Mathematical Modeling of the Marine Diesel Engine Working Cycle for the Diagnostic Purposes

Fuel systems of high power stationary engine

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