Methylal and Methylal-Diesel Blended Fuels for Use in Compression-Ignition Engines

Vertin, Keith; Ohi, J.; Naegeli, D. W.; Childress, Kenneth H.; Hagen, Gretchen; McCarthy, Chris I.; Cheng, A. S.; Dibble, Robert W.

doi:10.4271/1999-01-1508

Cited by 90 publications

(48 citation statements)

References 15 publications

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“…Taking into account their high auto-ignition tendency and high oxygen content, dimethoxymethane [2,3] and 1,2-dimethoxyethane [1] were chosen as good fuels or fuel additives.…”

mentioning

confidence: 99%

Density and Viscosity Measurements of Dimethoxymethane and 1,2-Dimethoxyethane from 243 K to 373 K up to 20 MPa

Zheng

Meng

et al. 2008

Int J Thermophys

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Measurements of the density and viscosity of dimethoxymethane and 1,2-dimethoxyethane are reported over the temperature range from 243 K to 373 K and at pressures up to 20 MPa. The measurements were performed simultaneously using a vibrating-wire instrument operated in the forced mode of oscillation. The overall uncertainties of these results are 2.0 % in viscosity and 0.2 % in density. The measurements were correlated with a Tait-type equation for density and a hard-sphere model for viscosity. The maximum absolute deviation and the average absolute deviation (AAD) of the density measurements from the correlation for dimethoxymethane are 0.065 % and 0.012 %, respectively, and for 1,2-dimethoxyethane, are 0.16 % and 0.044 %. With regard to viscosity, the maximum absolute deviation and the AAD of the present results from the correlation for dimethoxymethane are 1.55 % and 0.40 %, respectively, and for 1,2-dimethoxyethane, are 1.05 % and 0.26 %. Comparisons of the experimental data and measurements from the literature with values calculated by the correlations at different temperatures and pressures are presented.

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“…Taking into account their high auto-ignition tendency and high oxygen content, dimethoxymethane [2,3] and 1,2-dimethoxyethane [1] were chosen as good fuels or fuel additives.…”

mentioning

confidence: 99%

Density and Viscosity Measurements of Dimethoxymethane and 1,2-Dimethoxyethane from 243 K to 373 K up to 20 MPa

Zheng

Meng

et al. 2008

Int J Thermophys

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“…2 The capability of oxygenates to reduce emissions from diesel fuels has also been investigated. 1,[5][6][7] Particularly, of the potential diesel fuel components, diethylene glycol dimethyl ether (DEDM, molecular structure: CH 3 OCH 2 CH 2 OCH 2 CH 2 OCH 3 , also known as diglyme) has been tested both as a pure chemical 8,9 and as a fuel component blended with diesel fuel. 10,11 However, most of the existing work has focused on monitoring benefits of oxygenates in reducing regulated emissions, namely, PM, NO x , CO, and total hydrocarbon (THC).…”

Section: Introductionmentioning

confidence: 99%

Comparison of Vehicle Exhaust Emissions from Modified Diesel Fuels

Zhu

Cao

Pigeon

et al. 2003

Journal of the Air & Waste Management Association

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Three diesel fuels, one oil sand-derived (OSD) diesel serving as base fuel, one cetane-enhanced base fuel, and one oxygenate [diethylene glycol dimethyl ether (DEDM)]-blended base fuel, were tested for their emission characterizations in vehicle exhaust on a light-duty diesel truck that reflects the engine technology of the 1994 North American standard. Both the cetane-enhanced and the oxygenate-blended fuels were able to reduce regulated [CO, particulate matter (PM), total hydrocarbon (THC)] and nonregulated [polyaromatic hydrocarbons (PAHs), carbonyls, and other volatile organic chemicals] emissions, except for nitrogen oxides (NO x ), compared with the base fuel. Although burning a fuel that contains oxygen could conceivably yield more oxygenated compounds in emissions, the oxygenate-blended diesel fuel resulted in reduced emissions of formaldehyde along with hydrocarbons such as benzene, 1,3-butadiene, and PAHs. Reductions in nitro-PAH emissions have been observed in both the cetane-enhanced and oxygenated fuels. This further demonstrates the benefits of using a cetane enhancer and the oxygenated fuel component.

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“…Furthermore, thanks to this enlarged mechanism, we have been able to establish the kinetics of the combustion of ethylal practically unknown until now. This investigation on these diethers will help to understand the experimental results obtained by engine manufacturers which have added methylal in their diesel fuel [1][2][3][4][5][6]. They observed a decrease of the formation of soot particles.…”

Section: Discussionmentioning

confidence: 95%

“…It emitted 52% lower particulate matter and 4% lower nitrogen oxides compared to a conventional diesel fuel. Vertin et al [4] have demonstrated a substantial reduction of particulate matter emissions for 10-30% blends of methylal in diesel fuel. And, Cheng et al [5] showed that the presence of methylal in diesel has reduced the total particle mass concentrations, as well as the particle number density and the mean particle diameter.…”

Section: Introductionmentioning

confidence: 98%

Experimental and modeling studies of C2H4/O2/Ar, C2H4/methylal/O2/Ar and C2H4/ethylal/O2/Ar rich flames and the effect of oxygenated additives

Dias

Vandooren

2011

Combustion and Flame

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Methylal and Methylal-Diesel Blended Fuels for Use in Compression-Ignition Engines

Cited by 90 publications

References 15 publications

Density and Viscosity Measurements of Dimethoxymethane and 1,2-Dimethoxyethane from 243 K to 373 K up to 20 MPa

Density and Viscosity Measurements of Dimethoxymethane and 1,2-Dimethoxyethane from 243 K to 373 K up to 20 MPa

Comparison of Vehicle Exhaust Emissions from Modified Diesel Fuels

Experimental and modeling studies of C2H4/O2/Ar, C2H4/methylal/O2/Ar and C2H4/ethylal/O2/Ar rich flames and the effect of oxygenated additives

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