Experimental and Theoretical Analysis of the Combustion and Pollutants Formation Mechanisms in Dual Fuel DI Diesel Engines

Papagiannakis, Roussos G.; Hountalas, D. T.; Kotsiopoulos, Petros

doi:10.4271/2005-01-1726

Cited by 41 publications

(39 citation statements)

References 24 publications

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“…The model has been properly modified to describe the combustion process that takes place in pilot ignited natural gas diesel engines. Model predictions have been already presented in the past by the present research group [23][24][25][26][27]. Theoretical results are validated against experimental values, which were obtained at various speeds and loads from a single cylinder DI diesel engine operating under dual fuel mode at fixed pilot fuel quantity and normal injection advance without air inlet preheating (normal pilot ignited dual fuel operation -NPDFO).…”

Section: Introductionmentioning

confidence: 94%

“…According to prior studies [10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27], alterations in various engine operating parameters, such as pilot fuel quantity, pilot diesel fuel injection timing and air inlet preheating, may be used to improve the engine efficiency and to restrain the increase of CO and HC emitted from a compression ignition engine running under pilot ignited natural gas diesel operating mode.…”

Section: Introductionmentioning

confidence: 99%

“…At high load, the improvement of gaseous fuel utilization leads to a relevant improvement of both engine performance and carbon monoxide emissions, but their values continue to be inferior to the respective values observed under normal diesel operation. During the last few years, the present research group has also reported experimental investigations along with computer simulations conducted on such kind of engines [23][24][25][26][27].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Theoretical study of the effects of engine parameters on performance and emissions of a pilot ignited natural gas diesel engine☆

Papagiannakis

Kotsiopoulos

Zannis

et al. 2010

Energy

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Section: Introductionmentioning

confidence: 94%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Theoretical study of the effects of engine parameters on performance and emissions of a pilot ignited natural gas diesel engine☆

Papagiannakis

Kotsiopoulos

Zannis

et al. 2010

Energy

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“…Papagiannakis et al used a gradually-improved model of a dualfuel engine burning natural gas and diesel fuel in a number of their papers [9,10,11,17,18]. The authors used the fundamental laws of conservation of mass, energy and momentum for combustion process simulation.…”

Section: Introductionmentioning

confidence: 99%

“…The heat release rate and the concentrations of the homogeneous gas/DF/air mixture components were imposed by a Wiebe function, separately for gas and diesel fuel. The empirical formula of Prakash [23] was used to predict diesel fuel ignition lag, taking into account the presence of natural gas in the cylinder.Papagiannakis et al used a gradually-improved model of a dualfuel engine burning natural gas and diesel fuel in a number of their papers [9,10,11,17,18]. The authors used the fundamental laws of conservation of mass, energy and momentum for combustion process simulation.…”

mentioning

confidence: 99%

Zero-dimensional 2-phase combustion model in a dual-fuel compression ignition engine fed with gaseous fuel and a divided diesel fuel charge

Mikulski¹,

Wierzbicki²,

Piętak³

2015

Eksploatacja i Niezawodnosc - Maintenance and Reliability

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The problem of using alternative fueling sources for combustion engines has been growing in importance recently. This is connected not only with the dwindling oil resources, but also with the growing concern for the natural environment and the fight against global warming. This paper proposes the concept for a zero-dimensional model of a multi-fuel engine, enabling the determination of thermodynamic system parameters based on the basic geometric and material object data (complete model). The basic problems in the creation of this model and the modeling of the accompanying subprocesses have been outlined and the methodology of the numerical solution of the obtained mathematical description has been proposed. The basic characteristics of the developed model are: the application of an original model of liquid fraction injection based on normal distribution, a new Assanis correlation for computing the diesel fuel self-ignition delay period in the presence of gas, first-order chemical reaction kinetic equations for describing the course of combustion for combustible components of the gas/air mixture, the implementation of a self-consistency procedure in modeling heat exchange and the effect of exhaust recirculation, the inclusion of both a single liquid fuel injection and the possibility of performing computations for a divided charge. Keywords: dual-fuel engine, engine combustion process, mathematical model, computer simulation, heat exchangeW ostatnim czasie problem wykorzystania alternatywnych źródeł zasilania silników spalinowych zyskuje szczególnie na znaczeniu. Związane jest to nie tylko z kurczącymi się zasobami ropy naftowej, ale również z coraz większą troską o środowisko naturalne oraz walką z globalnym ociepleniem. W niniejszej pracy zaproponowano koncepcję zero-wymiarowego modelu silnika wielopaliwowego, umożliwiającego, wyznaczenie parametrów termodynamicznych układu w oparciu o podstawowe dane geometryczne i materiałowe obiektu (model kompletny). Nakreślono podstawowe problemy w zagadnieniu tworzenia takiego modelu i modelowania podprocesów towarzyszących oraz zaproponowano metodykę numerycznego rozwiązywania uzyskanego opisu matematycznego. Podstawowe wyróżniki opracowanego modelu to: zastosowanie autorskiego modelu procesu wtrysku frakcji ciekłej opartego na rozkładzie normalnym, nowej korelacji Assanisa do obliczenia okresu zwłoki samozapłonu oleju napędowego w obecności gazu, jednostopniowych równań kinetyki reakcji chemicznej do opisu przebiegu spalania składników palnych mieszaniny gaz-powietrze, implementacja procedury samouzgodnienia w modelowaniu procesu wymiany ciepła i wpływu recyrkulacji spalin, uwzględnienie zarówno pojedynczego wtrysku paliwa ciekłego jak i możliwość prowadzenia obliczeń dla dawki dzielonej.Słowa kluczowe: silnik dwupaliwowy, proces spalania w silniku, model matematyczny, symulacja komputerowa, wymiana ciepła.Mikulski M, Wierzbicki s, PięTAk A. zero-dimensional 2-phase combustion model in a dual-fuel compression ignition engine fed with gaseous fuel and a divided diesel fu...

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Theoretical study of the effects of pilot fuel quantity and its injection timing on the performance and emissions of a dual fuel diesel engine

Papagiannakis

Hountalas

Rakopoulos

2007

Energy Conversion and Management

155

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Experimental and Theoretical Analysis of the Combustion and Pollutants Formation Mechanisms in Dual Fuel DI Diesel Engines

Cited by 41 publications

References 24 publications

Theoretical study of the effects of engine parameters on performance and emissions of a pilot ignited natural gas diesel engine☆

Theoretical study of the effects of engine parameters on performance and emissions of a pilot ignited natural gas diesel engine☆

Zero-dimensional 2-phase combustion model in a dual-fuel compression ignition engine fed with gaseous fuel and a divided diesel fuel charge

Theoretical study of the effects of pilot fuel quantity and its injection timing on the performance and emissions of a dual fuel diesel engine

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