Effects of high pressure, high temperature and dilution on laminar burning velocities and Markstein lengths of iso-octane/air mixtures

Galmiche, Bénédicte; Halter, Fabien; Foucher, Fabrice

doi:10.1016/j.combustflame.2012.06.008

Cited by 152 publications

(90 citation statements)

References 24 publications

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“…Compared with 15% O 2 , the laminar burning velocity of 27% O 2 is more than 8 times higher. The reasonable results of laminar burning velocity under engine operation conditions were obtained thanks to the reliability of the experimental correlation proposed by Galmiche et al [24].…”

Section: Combustion Characteristicsmentioning

confidence: 89%

“…In the study of Galmiche et al [24], an empirical term was added to take into account both the effect of N 2 dilution and O 2 enrichment: The parameters used in the correlation are listed in Table 3.…”

Section: Laminar Burning Velocity Correlationmentioning

confidence: 99%

“…The laminar burning velocity for different quantities of O 2 was experimentally investigated in previous studies [23,24]. In order to take into account the effect of oxygen control on the engine combustion simulation, a correlation based on an experimental estimation [24] was implemented in the AMESim model:…”

Section: Laminar Burning Velocity Correlationmentioning

confidence: 99%

“…In order to take into account the effect of oxygen control on the engine combustion simulation, a correlation based on an experimental estimation [24] was implemented in the AMESim model:…”

Section: Laminar Burning Velocity Correlationmentioning

confidence: 99%

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Combustion, Performance and Emission Analysis of an Oxygen-Controlling Downsized SI Engine

Zhou

Moreau

Mounaïm‐Rousselle

et al. 2016

Oil Gas Sci. Technol. – Rev. IFP Energies nouvelles

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-In the present study, experiments were carried out in a single-cylinder downsized SI engine with different rates of oxygen (15% to 27% by volume in the total mixture of intake gases except fuel) and equivalence ratios (from 0.45 to 1). Therefore, the oxygen volume fraction is due to oxygen enrichment or nitrogen dilution. The study of the impact of controlling the oxygen concentration on the combustion characteristics and emissions was performed at 1 400 rpm, at several loads (Indicated Mean Effective Pressure (IMEP) from 400 to 1 000 kPa). For each operation point, the spark advance and the intake pressure were adjusted simultaneously in order to maintain the load and obtain a minimum value of the indicated Specific Fuel Consumption (SFC). The effect of the oxygen concentration on the engine combustion characteristics was simulated by using the commercial software AMESim, with the combustion model developed by IFP Energies nouvelles, and an adapted algorithm was used to avoid residual gas calibration. By implementing a correlation for the laminar burning velocity, the in-cylinder pressures were perfectly predicted with a maximum pressure relative error of less than 2% for almost all the operating points. The classification of engine combustion according to the Peters-Borghi diagram, gives a deeper insight into the interaction between turbulence and the flame front.Résumé -Combustion, performance et analyse des émissions d'un moteur essence suralimenté avec contrôle de l'oxygène admis -Dans cette étude, des expériences sur monocylindre essence suralimenté ont été réalisées avec comme variable le taux d'oxygène (15 % à 27 % en volume dans le mélange total de gaz d'admission à l'exception du carburant) admis et la richesse (0,45 à 1). La fraction volumique d'oxygène représente en fait soit un enrichissement en oxygène de l'admission moteur ou de l'azote de dilution. L'étude de l'impact du contrôle de la concentration d'oxygène sur les caractéristiques de combustion et les émissions a été effectuée à 1 400 tr/mn, pour plusieurs charges, de 400 à 1 000 kPa. Pour chaque point de fonctionnement, l'avance à l'allumage et la pression d'admission ont été ajustées simultanément afin d'obtenir la charge maximale et la valeur minimale de consommation spécifique indiquée de carburant. L'effet de la concentration en oxygène dans la combustion du moteur a été simulé à partir du logiciel AMESim, avec le modèle de combustion développé par l'IFP Energies nouvelles, et un algorithme adapté a été utilisé pour éviter l'étalonnage de gaz résiduels. À partir d'une corrélation pour la vitesse de combustion laminaire, les valeurs de pression cylindre ont été prédites avec une erreur relative inférieure à 2 %, pour tous les points de fonctionnement. Le classement de la combustion selon le diagramme de Peters-Borghi a permis d'avoir une idée plus précise de l'interaction entre la turbulence et le front de flamme dans ces conditions.

show abstract

Section: Combustion Characteristicsmentioning

confidence: 89%

Section: Laminar Burning Velocity Correlationmentioning

confidence: 99%

Section: Laminar Burning Velocity Correlationmentioning

confidence: 99%

“…In order to take into account the effect of oxygen control on the engine combustion simulation, a correlation based on an experimental estimation [24] was implemented in the AMESim model:…”

Section: Laminar Burning Velocity Correlationmentioning

confidence: 99%

See 2 more Smart Citations

Combustion, Performance and Emission Analysis of an Oxygen-Controlling Downsized SI Engine

Zhou

Moreau

Mounaïm‐Rousselle

et al. 2016

Oil Gas Sci. Technol. – Rev. IFP Energies nouvelles

View full text Add to dashboard Cite

show abstract

“…3 in Ref. [62]. For a lean (the equivalence ratio F is equal to 0.5) hydrogen-air mixture characterized by a low Le and negative L b , Varea et al [27] reported that S 0 b obtained using the linear Eq.…”

Section: Extrapolation Methods For Expanding Spherical Laminar Flamesmentioning

confidence: 97%

Experimental assessment of various methods of determination of laminar flame speed in experiments with expanding spherical flames with positive Markstein lengths

Lipatnikov

Shy

2015

Combustion and Flame

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Phänomenologische Verbrennungsmodelle

Stiesch¹,

Dinkelacker²,

Eckert³

et al. 2014

Grundlagen Verbrennungsmotoren

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Effects of high pressure, high temperature and dilution on laminar burning velocities and Markstein lengths of iso-octane/air mixtures

Cited by 152 publications

References 24 publications

Combustion, Performance and Emission Analysis of an Oxygen-Controlling Downsized SI Engine

Combustion, Performance and Emission Analysis of an Oxygen-Controlling Downsized SI Engine

Experimental assessment of various methods of determination of laminar flame speed in experiments with expanding spherical flames with positive Markstein lengths

Phänomenologische Verbrennungsmodelle

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