Effect of Fuel Composition on Exhaust Gas Emissions from DI and DI Impingement Diffusion Combustion Diesel Engines

Tamanouchi, Mitsuo; Akasaka, Yukio

doi:10.4271/941016

Cited by 7 publications

(2 citation statements)

References 15 publications

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“…As the oxygen content of each blend was gradually increased, the exhaust soot emissions steadily decreased, and when the oxygen content of the fuel reached about 25–35% by mass, the particulate emissions were reduced to near-zero levels. While some earlier studies concluded that the reduction of particulate in diesel engine exhaust was dependent mainly on the percentage mass of oxygen in the fuel rather than the type of oxygenate, , there is now consensus that there are differences that are dependent on the oxygenate molecular structure. ,,− For instance, Liotta and Motalova found that some oxygen-containing functional groups appeared to be more efficient at reducing exhaust particulate matter than others; with ether groups apparently more effective at lowering particulate emissions compared to alcohols . Mueller and colleagues compared dibutyl maleate (DBM) and tripropylene glycol methyl ether (TPGME) combustion in a compression ignition engine and a constant volume vessel .…”

Section: Introductionmentioning

confidence: 99%

Quantification of the Fraction of Particulate Matter Derived from a Range of ¹³C-Labeled Fuels Blended into Heptane, Studied in a Diesel Engine and Tube Reactor

et al. 2016

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This paper presents the results of an experimental study that was carried out to determine the conversion rates to particulate matter (PM) of several liquid fuel hydrocarbon molecules and specific carbon atoms within those molecules. The fuels investigated (ethanol, n-propanol, i-propanol, acetone, and toluene) were blended in binary mixtures with n-heptane to a level of 10 mol percent. The contribution of the additive molecules to PM was quantified using a carbon-13 (13C) labeling experiment, in which the fuel of interest was enriched with 13C to serve as an atomic tracer. Measurement of the 13C/12C in the fuel and in the resulting PM was carried out using isotope ratio mass spectrometry. The fuel binary mixtures were tested under pyrolysis conditions in a tube reactor and also combusted in a direct injection compression ignition engine. In the tube reactor, samples were generated under oxygen-free pyrolysis conditions and at a temperature of 1300 °C, while the engine experiments were carried out at an intermediate load. Both in the tube reactor and in the engine it was found that, dependent on the fuel molecular structure, there were significant differences in the overall conversion rates to PM of the fuel molecules and of the “submolecular” carbon atoms. A separate experiment was also carried out in the compression ignition engine, with n-heptane as fuel, in order to determine the contribution of the engine lubrication oil to exhaust PM; the results showed that a significant portion (∼60%) of the total particulate was derived from the lubrication oil.

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Section: Introductionmentioning

confidence: 99%

Quantification of the Fraction of Particulate Matter Derived from a Range of ¹³C-Labeled Fuels Blended into Heptane, Studied in a Diesel Engine and Tube Reactor

et al. 2016

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“…Tamanouchi and Akasaka [11] performed oxygenated fuel tests using a commercial DI engine and a DI impingement prototype. The oxygenates, an alcohol, a carbonate and an ether, were added to the base fuel at a 0.1 O=C mole ratio.…”

Section: Introductionmentioning

confidence: 99%

Effects of oxygenated blending compounds on emissions from a turbocharged direct injection diesel engine

Litzinger

Stoner

Hess

et al. 2000

International Journal of Engine Research

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An experimental investigation was conducted to evaluate the effect of three different oxygenated compounds, diglyme, diethyl maleate and dibutyl maleate, on emissions from a Volkswagen 1.9 litre, turbocharged, direct injection diesel engine. Sampling was performed using a mini-dilution tunnel technique to obtain particulate matter and a Fourier transform infrared (FTIR) spectrometer for gaseous emissions. The particulate samples were analysed using thermal analysis and Soxhlet extraction to determine the fraction of volatile and soluble organic material respectively. All three oxygenated compounds were found to be effective at reducing particulate emissions, with the maleate compounds being more effective overall than the diglyme. Analysis of the relative contributions of changes in the soot and soluble organic fraction (SOF) to the reduction of particulate matter indicated that, for diethyl maleate and diglyme, reductions in soot were the dominant effect. No consistent trends in NOx emissions were observed, although the diethyl maleate, which was most effective at reducing the particulate matter, increased the NOx slightly at most of the test conditions. Differences in the combustion chemistry of the additives are discussed as a possible explanation of the greater effectiveness of the maleate compounds in reducing soot, as well as for the difference in the effectiveness of diethyl and dibutyl maleate.

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Effects of oxygenated additives on aromatic species in fuel-rich, premixed ethane combustion: a modeling study

Song

Nag

Litzinger

et al. 2003

Combustion and Flame

126

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Effect of Fuel Composition on Exhaust Gas Emissions from DI and DI Impingement Diffusion Combustion Diesel Engines

Cited by 7 publications

References 15 publications

Quantification of the Fraction of Particulate Matter Derived from a Range of ¹³C-Labeled Fuels Blended into Heptane, Studied in a Diesel Engine and Tube Reactor

Quantification of the Fraction of Particulate Matter Derived from a Range of ¹³C-Labeled Fuels Blended into Heptane, Studied in a Diesel Engine and Tube Reactor

Effects of oxygenated blending compounds on emissions from a turbocharged direct injection diesel engine

Effects of oxygenated additives on aromatic species in fuel-rich, premixed ethane combustion: a modeling study

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Effect of Fuel Composition on Exhaust Gas Emissions from DI and DI Impingement Diffusion Combustion Diesel Engines

Cited by 7 publications

References 15 publications

Quantification of the Fraction of Particulate Matter Derived from a Range of 13C-Labeled Fuels Blended into Heptane, Studied in a Diesel Engine and Tube Reactor

Quantification of the Fraction of Particulate Matter Derived from a Range of 13C-Labeled Fuels Blended into Heptane, Studied in a Diesel Engine and Tube Reactor

Effects of oxygenated blending compounds on emissions from a turbocharged direct injection diesel engine

Effects of oxygenated additives on aromatic species in fuel-rich, premixed ethane combustion: a modeling study

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Product

Resources

About

Quantification of the Fraction of Particulate Matter Derived from a Range of ¹³C-Labeled Fuels Blended into Heptane, Studied in a Diesel Engine and Tube Reactor

Quantification of the Fraction of Particulate Matter Derived from a Range of ¹³C-Labeled Fuels Blended into Heptane, Studied in a Diesel Engine and Tube Reactor