Autoignition of gasoline surrogates mixtures at intermediate temperatures and high pressures

Fikri, Mustapha; Herzler, Jürgen; Starke, R.; Schulz, Christof; Roth, P.; Kalghatgi, Gautam

doi:10.1016/j.combustflame.2007.07.010

Cited by 131 publications

(82 citation statements)

References 5 publications

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“…However, 4-component surrogates involving TRF/1-pentene and TRF/2-pentene have also been formulated and investigated by e.g. [14][15][16], as well as complex multicomponent surrogates for various non-oxygenated gasolines [17,18]. The reasonable extent of agreement between TRF and gasoline, in addition to the availability of well validated chemical mechanisms of its oxidation pathways, makes it currently a more feasible surrogate for gasoline in terms of ignition delay modelling compared to more complex surrogates [19] and blending effects, and hence it is used in this work.…”

Section: Surrogate Formulationmentioning

confidence: 99%

The influence of n -butanol blending on the ignition delay times of gasoline and its surrogate at high pressures

Agbro

Tomlin

Lawes

et al. 2017

Fuel

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The influence of blending n-butanol at 20% by volume on the ignition delay times for a reference gasoline was studied in a rapid compression machine (RCM) for stoichiometric fuel/air mixtures at 20 bar and 678 K-858 K. Delay times for the blend lay between those of stoichiometric gasoline and stoichiometric n-butanol across the temperature range studied. At lower temperatures, delays for the blend were however, much closer to those of n-butanol than gasoline despite n-butanol being only 20% of the mixture. Under these conditions n-butanol acted as an octane enhancer over and above what might be expected from a simple linear blending law. The ability of a gasoline surrogate, based on a toluene reference fuel (TRF), to capture the main trends of the gasoline/ n-butanol blending behaviour was also tested within the RCM. The 3-component TRF based on a mixture of toluene, n-heptane and iso-octane was able to capture the trends well across the temperature range studied. Simulations of ignition delay times were also performed using a detailed blended nbutanol/TRF mechanism based on the adiabatic core assumption and volume histories from the experimental data. Overall, the model captured the main features of the blending behaviour, although at the lowest temperatures, predicted ignition delays for stoichiometric n-butanol were longer than those observed. A bruteforce local sensitivity analysis was performed to evaluate the main chemical processes driving the ignition behaviour of the TRF, n-butanol and blended fuels. The reactions of fuel + OH dominated the sensitivities at lower temperatures, with H abstraction from nn-butanol and the blend. At higher temperatures the decomposition of H 2 O 2 and reactions of HO 2 and that of formaldehyde with OH became critical, in common with the ignition behaviour of other fuels. Remaining uncertainties in the rates of these key reactions are discussed.

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Section: Surrogate Formulationmentioning

confidence: 99%

The influence of n -butanol blending on the ignition delay times of gasoline and its surrogate at high pressures

Agbro

Tomlin

Lawes

et al. 2017

Fuel

View full text Add to dashboard Cite

show abstract

“…Results in shock tubes are less abundant. The high-pressure shock tube of Aachen was used to study PRF mixtures [121], measurements concerning PRF/toluene mixtures were made in Standford [119] and the apparatus of Duisburg was used to investigate PRF mixtures [326], n-heptane/toluene [301] and n-heptane/toluene/iso-octane/di-iso-butylene blends [330]. The two recent studies concerning di-iso-butylene, which has a similar structure to iso-octane, are of particular interest due to the great lack of results concerning branched alkenes.…”

Section: Tables 21-23mentioning

confidence: 99%

Detailed chemical kinetic models for the low-temperature combustion of hydrocarbons with application to gasoline and diesel fuel surrogates

Battin‐Leclerc

2008

Progress in Energy and Combustion Science

581

379

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“…Thus more complex fuel blends are needed for a gasoline surrogate fuel. In the 0010 [30] DIB = 2,4,4-trimethyl-1-pentene.…”

Section: Introductionmentioning

confidence: 99%

HCCI experiments with gasoline surrogate fuels modeled by a semidetailed chemical kinetic model

Andrae

Head

2009

Combustion and Flame

135

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Autoignition of gasoline surrogates mixtures at intermediate temperatures and high pressures

Cited by 131 publications

References 5 publications

The influence of n -butanol blending on the ignition delay times of gasoline and its surrogate at high pressures

The influence of n -butanol blending on the ignition delay times of gasoline and its surrogate at high pressures

Detailed chemical kinetic models for the low-temperature combustion of hydrocarbons with application to gasoline and diesel fuel surrogates

HCCI experiments with gasoline surrogate fuels modeled by a semidetailed chemical kinetic model

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