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

Baskar, P.; Senthilkumar, A.

doi:10.1016/j.jestch.2015.08.011

Cited by 115 publications

(59 citation statements)

References 16 publications

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“…Therefore, CO2 formation is at a high level for carbon-related reactions. When a mixture becomes stoichiometric and rich (1), CO2 formation showed a decreasing trend, while CO increases due to the lack of oxygen for complete combustion [51]. This also causes O, OH, and NO to be reduced in the equilibrium combustion products.…”

Section: Resultsmentioning

confidence: 99%

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Estimation of equilibrium combustion products of diesel-biodiesel fuel blends using the developed solving process for CnHm and CαHβOg fuel blends

Yıldız¹,

Çeper²

2022

Int. J. Automot. Mech. Eng.

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This study investigates the combustion products of diesel-biodiesel fuel blends by considering its chemical equilibrium state. In order to determine the equilibrium combustion products involving 10 species, a solving scheme which can be used for different fuel blends consisting of CnHm and CHO generic structures was developed. The constituted solving scheme was then applied for four different mixtures which were diesel, 20 and 50 % biodiesel additions (by volume), and 100% biodiesel. The change in mole fraction of the fuels and their blends was determined as a function of temperature, pressure and equivalence ratio. Besides, mass-based combustion product rates of CO2, CO and NO for a unity of fuel mass were also investigated for different temperatures and equivalence ratios. The results show that the addition of biodiesel to diesel fuel does not have any significant effect on the change in the mole fraction of the combustion products. However, the addition of biodiesel reduces slightly the formation of CO and NO, while CO2 shows a slightly increasing trend. In terms of mass-based combustion product rates, the biodiesel addition reduces the amount of CO2, CO and NO products because it increases the molecular weight of the fuel blends.

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Section: Resultsmentioning

confidence: 99%

“…The fuel composition affects the composition of products due to the different stoichiometric air-fuel ratios and carbon/hydrogen ratios [51,52]. Therefore, Figure 6 shows the products with changes in equivalence ratio for diesel, biodiesel, and their blends.…”

Section: Resultsmentioning

confidence: 99%

Estimation of equilibrium combustion products of diesel-biodiesel fuel blends using the developed solving process for CnHm and CαHβOg fuel blends

Yıldız¹,

Çeper²

2022

Int. J. Automot. Mech. Eng.

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“…Under rich mixture conditions, the carbon monoxide increased markedly when the fraction of carbon dioxide was decreased below 40 %. This resulted from the low burning rate and lower oxygen availability inside the engine cylinder [36]. Figure 4 shows that the major part of the CO concentration is located in the ignition zone on the axis of the cylinder and inside the basin of the piston.…”

Section: Co Emissionsmentioning

confidence: 99%

Composition and Stoichiometry Effects of Biogas as Fuel in Spark Ignition Engine

Mokrane¹,

Energy²,

Adouane³

et al. 2018

INT. J. AUTOMOT. MECH. ENG.

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The most important advantage of biogas is that one can retrofit easily the conventional combustion engines to be used for the new fuel but remain the problem of pollutant emission. In this paper, the effect of the biogas composition on the emissions of CO and NOx in an SI engine is investigated numerically. Three compositions were studied (CH4:40 %, CO2:60 %), (CH4:50 %, CO2:50 %), (CH4:60 %, CO2:40 %), at equivalence ratio (ϕ) from lean to rich. The non-adiabatic partially premixed combustion model with probability density function (PDF) method and Zimont model of the turbulent flame speed are used. It was found that increasing CO2 in the biogas lowers NOx emissions significantly, whereas, CO was found to be very low, and appears only at high CH4 concentration. A biogas with (CH4:60 %, CO2:40 %), burning at about (ϕ = 0.9), i.e. slightly lean mixture, and advanced spark timing (between 10 to 20°.) seems to be a very a realistic combination in terms of biogas composition, stoichiometry and spark timing. It is recommended that, to accomplish some upgrading, in case of biogases with low CH4 percentage, to get it up to 60 %.

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“…Baskar et al [10] worked on diesel engine using WiDE with enriched oxygenated air as fuel. They reported enhancement in combustion characteristics and brake thermal efficiency.…”

Section: Original Articlementioning

confidence: 99%

Effects of Water Diesel Emulsion on Diesel Engine

Gopidesi¹,

Tjprc²

2018

IJMPERD

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The Water Diesel Emulsion (WiDE) fuel shows nepotism in terms of environmental and economical aspects. In the present investigation, WiDE is used as fuel for the diesel engine. Here, WiDE was prepared with various water percentages in the range of 0 to 15 using the non ionic surfactant with a HLB value of 6.31. The WiDE was prepared by using ultrasonic probe Sonicator and the mean diameter of water droplet was measured by using the dynolite microscope.

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

Cited by 115 publications

References 16 publications

Estimation of equilibrium combustion products of diesel-biodiesel fuel blends using the developed solving process for CnHm and CαHβOg fuel blends

Estimation of equilibrium combustion products of diesel-biodiesel fuel blends using the developed solving process for CnHm and CαHβOg fuel blends

Composition and Stoichiometry Effects of Biogas as Fuel in Spark Ignition Engine

Effects of Water Diesel Emulsion on Diesel Engine

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