Wyniki wyszukiwania - BazTech

1

Modelling of the fuel injection of medium speed marine diesel engines

Monieta J.

Combustion Engines

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2017

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R. 56, nr 3

139--146

EN

The article presents the stages of fuel injection modeling of the four-stroke marine diesel engines as a set of functional blocks the of the fuel waves flow. The elaborated model includes the values of changing pressures in the combustion chamber and the course of changes of the pressure in spaces of the injection pump, injection pipe and the injector. Linear and local losses, as well as the conditions for the functioning were taken into account in stages of the fuel flow. The influence of different values of the engine load on the pressure course of the in individual spaces of injection apparatus and in the engine cylinder during the working cycle depending on the crank angle of rotation of the crankshaft have been simulated. The mathematical relationships were selected and the structural and experimental data are used, allowing the calculation of the parameters of interest for the simulated process.

2

Simulation and experimental coupled research of rate of heat release in DI diesel engine for various injection strategies

Lejda K., Woś P.

Silniki Spalinowe

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2008

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R. 47, nr 1

17-24

EN

In the paper the rate of heat release analysis in direct injection diesel engine has been presented and discussed. The research has been carried out for two different injection strategies, i.e. for conventional single-phase injection and for triple-phase injection executed by a Common Rail injection system. The calculation methodology of heat release rate based on indicator diagram has been presented as well.

PL

W artykule dokonano analizy przebiegu wydzielania się ciepła w cylindrze silnika wysokoprężnego z wtryskiem bezpośrednim. Badania prowadzono dla dwu różnych strategii wtrysku, tj. konwencjonalnego wtrysku jednokrotnego potrójnego wtrysku realizowanego za pomocą systemu common rail. Przedstawiono również metodykę obliczania przebiegu wydzielania ciepła na podstawie wykresu indykatorowego.

3

Study of particulate matter (PM) emission from single-cylinder diesel engine at multi-split injection

Balawender K., Woś P.

Silniki Spalinowe

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2007

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R. 46, nr SC3

137-143

EN

The paper presents some results of PM emission obtained from a single cylinder, direct injection diesel engine equipped with common-rail injection system with fully free control signal changing. Injection rate shaping is limited only by dynamic properties of injector moving parts, but injection pressure can be adjusted from 60 up to 110 MPa. Investigations were made at a multi-split injection rate, i.e. three fuel doses, to determine an influence of different injection rates on PM emission. It was also noticed that comparing to engine operation with the standard in-line injection pump, combustion noise and exhaust smoke being the result of PM presence is significantly decreased.

4

Wpływ charakterystyk wtrysku paliwa na emisję Nox w silnikach o zapłonie samoczynnym

Lejda K., Woś P.

Inżynieria Maszyn

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2003

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R. 8, z. 4

91-100

PL

W artykule przedstawiono metodykę badań dotyczącą określenia wpływu charakterystyki wtrysku paliwa w silniku wysokoprężnym z komorą niedzieloną na emisję tlenków azotu NOx. Przeprowadzono badania modelowe i eksperymentalne. Obejmowały one opracowanie dwustrefowego, quasi-wymiarowego modelu matematycznego procesu spalania i wydzielania NOx oraz jego weryfikację eksperymentalną na stanowisku badawczym. Zweryfikowany model wykorzystano do przeprowadzenia badań symulacyjnych przedmiotowego zagadnienia, a wybrane wyniki tych badań przestawiono w artykule.

EN

In the paper investigation methods for determining of influence of fuel injection rate on nitric oxides (Nox) emission in direct injection diesel engine are presented. It was done model and experimental studies. They include formulation of two-zone, quasi-dimensional mathematical model of combustion and NOx formation and also experimental verification of the model on test bed. Verified model was taken for simulation researches of subject problem, and selected results are presented in the paper.