Effects of DGM and Oxidation Catalyst on Diesel Exhaust Emissions

Tamanouchi, Mitsuo; Akimoto, Takashi; Aihara, Shinji; Morihisa, Hiroki

doi:10.4271/1999-01-1137

Cited by 19 publications

(6 citation statements)

References 4 publications

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“…Moreover, the cyclic structure of DMF makes for the formation of 1,3-cyclopentadiene, which promotes the formation of polycyclic aromatic hydrocarbon and soot [16]. The E30 produces more small particles compared with D30, which can be explained from three aspects: the higher fuel viscosity of E30 favoring the small particles formation [17]; the formation of soluble organics is promoted by the rise of oxygen content in the fuel [18], resulting more fine particles produced [8]; higher mass of ethanol/diesel is consumed and more small-size particles are produced.…”

Section: D0 D10 D30 E30mentioning

confidence: 99%

A comparison study on the combustion and particulate emissions of 2,5-dimethylfuran/diesel and ethanol/diesel in a diesel engine

Wei¹,

Song²,

Xiao³

et al. 2018

THERM SCI

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Compared with pure Diesel fuel, Diesel engine fueled with 2,5-dimethylfuran/ diesel prolonged the ignition delay, shortened the combustion duration, increased the engine efficiency and decreased the number of accumulation mode particles (50 nm < Dp < 1000 nm), but increased the nucleation mode (Dp < 50 nm) number. The mean diameter of particles was declined with 2,5-dimethylfuran addition due to the increase of small particles number. Ethanol/diesel was more effective in extending the ignition delay, shortening the combustion duration, enhancing the engine efficiency and reducing the number of large size particles, but produced more small size particles compared with 2,5-dimethylfuran/diesel.

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Section: D0 D10 D30 E30mentioning

confidence: 99%

A comparison study on the combustion and particulate emissions of 2,5-dimethylfuran/diesel and ethanol/diesel in a diesel engine

Wei¹,

Song²,

Xiao³

et al. 2018

THERM SCI

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“…Some oxygenates also offer secondary benefits as well, such as increasing the cetane number (CN) and reducing sulfur content [49]. (or fuel/air equivalence ratio) also impacts the observed PM reductions with oxygenates [4,9]. As the engine's load is increased, the lean environment inside the combustion chamber becomes increasingly richer.…”

Section: Oxygenated Fuelsmentioning

confidence: 99%

“…Recent publications indicate that modest amounts of molecular oxygen in the fuel substantially reduce particulates [2][3][4][5][6][7][8][9][10]. Some oxygenates also offer secondary benefits as well, such as increasing the cetane number (CN) and reducing sulfur content [49].…”

Section: Oxygenated Fuelsmentioning

confidence: 99%

Effects of Oxygenated Fuels on DI Diesel Combustion and Emissions

Hallgren

Heywood

2001

SAE Technical Paper Series

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Emissions from compression ignition (CI) engines are being placed under stricter regulations. The use of oxygenated fuels has been proposed as a means of complying with future emission levels. Previous research on oxygenates has suggested the presence of molecular oxygen within the fuel significantly reduces the formation of particulate matter (PM). The PM reduction is logarithmic and correlates with the weight percent of oxygen in the fuel and not with other properties such as chemical structure and volatility. However, many studies fail to correctly decouple the effects of oxygenates from other fuel properties that impact emission levels; such as cetane number, density, aromatic content, and volatility.Mechanisms responsible for changes in the combustion process and emissions were investigated with a matrix containing 14 fuels, addressing oxygenate proportionality, structure, volatility, equivalent structure without oxygen, and changes in the base diesel fuel. A scanning mobility particle sizer (SMPS) was used to evaluate changes in particle size distributions, in addition to gravimetric filter and oxides of nitrogen (NOx) measurements.Engine emissions tests were conducted using a Ricardo Hydra MK IV direct injection (DI) diesel engine. The sensitivity of engine operation parameters to intake temperature, load, injection timing, and ignition delay (ID) were evaluated with the baseline fuel. All fuels in the matrix were matched for total released energy and combustion phasing, using a cetane improving additive. The changes in emission have been quantified with agreement between the relative trends observed with the integrated SMPS volume concentrations and filter measurements. In order to evaluate changes among fuels and measurements taken with the SMPS, various fuels were subjected to physical and chemical characterization in order to determine morphological and compositional changes.

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“…Information about performance and emissions of DGM as an additive can be found in different papers (Miyamoto et al 1998a;Ren et al 2007;Sison et al 2007;Tamanouchi et al 1999). In the paper by Ren et al (2007), the blends made by diesel+DGM (5%, 10%, 15%, and 20%) have been tested on a direct injection diesel engine.…”

Section: Dgm Emissionsmentioning

confidence: 99%

Emissions from Ethers and Organic Carbonate Fuel Additives: A Review

Arteconi

Mazzarini

Nicola

2011

Water Air Soil Pollut

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This paper is a review of the available literature on the main features of 11 of the most widely adopted oxygenated additives to base gasoline and diesel, focusing particularly on the emissions from the oxygenates considered as additives. The oxygenated additives studied are methyl tert-butyl ether, ethyl tertiary butyl ether, tert-amyl ethyl ether, tertiary amyl methyl ether, isopropyl ether, dimethyl carbonate, dimethoxymethane, dibutyl ether, diglycol methyl ether, diethyl carbonate, and 2-methoxyethyl acetate.

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Effects of DGM and Oxidation Catalyst on Diesel Exhaust Emissions

Cited by 19 publications

References 4 publications

A comparison study on the combustion and particulate emissions of 2,5-dimethylfuran/diesel and ethanol/diesel in a diesel engine

A comparison study on the combustion and particulate emissions of 2,5-dimethylfuran/diesel and ethanol/diesel in a diesel engine

Effects of Oxygenated Fuels on DI Diesel Combustion and Emissions

Emissions from Ethers and Organic Carbonate Fuel Additives: A Review

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