Variable Air Composition with Polymer Membrane - A New Low Emissions Tool

Poola, Ramesh B.; Stork, Kevin; Sekar, R.; Callaghan, Kevin; Nemser, Stuart

doi:10.4271/980178

Cited by 22 publications

(7 citation statements)

References 34 publications

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“…They also observed a higher gross power, lower peak cylinder pressure and lower brake specific fuel consumption. Oxygen enhancement for intake air may be achieved by means of membrane technology or molecular sieve that can be incorporated in the intake air system through the air cleaner as investigated by Poola et al [13]. One of the potential drawbacks of oxygen enrichment is increased oxides of nitrogen from the tailpipe; however, this can be controlled by emulsified diesel as the results of Sekar et al [15] and Subramanian and Ramesh [17] reports shows.…”

Section: Introductionmentioning

confidence: 93%

“…A number of analytical and experimental studies [3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21] have demonstrated the benefits of using oxygen enriched combustion in diesel engines. The results of all these investigation show a considerable decrease in unburned hydrocarbon, carbon monoxide emissions and smoke while oxides of nitrogen emissions increased pro-rata with the oxygen added.…”

Section: Introductionmentioning

confidence: 99%

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Effects of oxygen enriched combustion on pollution and performance characteristics of a diesel engine

Baskar

Senthilkumar

2016

Engineering Science and Technology, an International Journal

115

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A B S T R A C TOxygen enriched combustion is one of the attractive combustion technologies to control pollution and improve combustion in diesel engines. An experimental test was conducted on a single cylinder direct injection diesel engine to study the impact of oxygen enrichment on pollution and performance parameters by increasing the oxygen concentration of intake air from 21 to 27% by volume. The tests results show that the combustion process was improved as there is an increase in thermal efficiency of 4 to 8 percent and decrease in brake specific fuel consumption of 5 to 12 percent. There is also a substantial decrease in unburned hydro carbon, carbon mono-oxide and smoke density levels to the maximum of 40, 55 and 60 percent respectively. However, there is a considerable increase in nitrogen oxide emissions due to increased combustion temperature and extra oxygen available which needs to be addressed.

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Section: Introductionmentioning

confidence: 93%

Section: Introductionmentioning

confidence: 99%

Effects of oxygen enriched combustion on pollution and performance characteristics of a diesel engine

Baskar

Senthilkumar

2016

Engineering Science and Technology, an International Journal

115

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“…The basic principle of membrane operation and various designs and operating characteristics are described in Poola et al [7]. Research work done on a locomotive two stroke diesel engine by Poola and Sekar [8] corroborate variable air composition as a technique to reduce emissions.…”

Section: Nitrogen Enriched Air (Nea)mentioning

confidence: 98%

Natural Gas Fired Reciprocating Engines for Power Generation: Concerns and Recent Advances

Gupta¹,

Biruduganti²,

Bihari³

et al. 2012

Natural Gas - Extraction to End Use

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“…The oxygen concentration in the air can be controlled by using elective permeation through a non-porous polymeric membrane. This kind of polymeric membrane is now extensively studied and was developed recently to solve a part of the CO 2 sequestration problem for fixed-site power generation, for example [6,11,12]. It would deplete or enrich oxygen in the intake air while being compact, lightweight, embeddable in the vehicle and inexpensive by overcoming the current problems of a loop EGR.…”

Section: Introductionmentioning

confidence: 99%

“…Thus, oxygen-enriched combustion can be used either as a booster to increase engine output or as a combustion enhancer when the engine operates at low loads or in cold-start conditions. Several studies performed with oxygen enrichment in SI engines showed positive effects such as reduction of Unburned HydroCarbon (UHC) fuel and CO [1][2][3][4], optimization of the downsized operating mode due to the direct effect on the combustion process and overall engine thermodynamics [5], and a decrease in the combustion phase [6][7][8]. On the other hand, a low oxygen concentration in the air (or N 2 dilution) can be considered as an alternative to Exhaust Gas Recirculation (EGR), which has been widely investigated in recent years [9,10].…”

Section: Introductionmentioning

confidence: 99%

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.

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Variable Air Composition with Polymer Membrane - A New Low Emissions Tool

Cited by 22 publications

References 34 publications

Effects of oxygen enriched combustion on pollution and performance characteristics of a diesel engine

Effects of oxygen enriched combustion on pollution and performance characteristics of a diesel engine

Natural Gas Fired Reciprocating Engines for Power Generation: Concerns and Recent Advances

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

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