Study of the knocking propensity of 2,5-dimethylfuran–gasoline and ethanol–gasoline blends

Rothamer, David; Jennings, Jamie H.

doi:10.1016/j.fuel.2012.03.049

Cited by 105 publications

(46 citation statements)

References 33 publications

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“…At 33°bTDC, the knocking occurrence probabilities of Bu20, gasoline and n-butanol are 89%, 87% and 21%, respectively. It was found when knocking occurrence probability is up to approximately 10%, engines began to suffer a power loss due to knock [37]. Therefore, knock limited spark timing (KLST) is further defined as the spark timing where the knocking occurrence probability is up to 10%.…”

Section: Knocking Tendencymentioning

confidence: 99%

Experimental investigation on the knocking combustion characteristics of n-butanol gasoline blends in a DISI engine

et al. 2016

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Section: Knocking Tendencymentioning

confidence: 99%

Experimental investigation on the knocking combustion characteristics of n-butanol gasoline blends in a DISI engine

et al. 2016

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“…The engine performance of 2,5-DMF as an additive to gasoline has been investigated in several studies [13,14,[177][178][179][180]. Tian et al [177,178] investigated the spray characteristics of pure 2,5-DMF and its blends with gasoline, such as droplet size distribution, spray penetration and droplet velocity.…”

Section: Engine Studiesmentioning

confidence: 99%

“…Another important finding was that the fuel consumption rate with dual-injection for D25 was 1.2% lower than pure gasoline in DI at a load of 8 bar IMEP. Later, the knocking behavior of 2,5-DMF/gasoline blends with 2,5-DMF volume percentages between 5-15% was investigated by Rothamer and Jennings [14] in a single-cylinder DI research engine. All 2,5-DMF blends exhibited better knock-limited spark advance (KLSA) compared to gasoline.…”

Section: Engine Studiesmentioning

confidence: 99%

Recent Trends in the Production, Combustion and Modeling of Furan-Based Fuels

Eldeeb

Akih-Kumgeh

2018

Energies

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Abstract:There is growing interest in the use of furans, a class of alternative fuels derived from biomass, as transportation fuels. This paper reviews recent progress in the characterization of its combustion properties. It reviews their production processes, theoretical kinetic explorations and fundamental combustion properties. The theoretical efforts are focused on the mechanistic pathways for furan decomposition and oxidation, as well as the development of detailed chemical kinetic models. The experiments reviewed are mostly concerned with the temporal evolutions of homogeneous reactors and the propagation of laminar flames. The main thrust in homogeneous reactors is to determine global chemical time scales such as ignition delay times. Some studies have adopted a comparative approach to bring out reactivity differences. Chemical kinetic models with varying degrees of predictive success have been established. Experiments have revealed the relative behavior of their combustion. The growing body of literature in this area of combustion chemistry of alternative fuels shows a great potential for these fuels in terms of sustainable production and engine performance. However, these studies raise further questions regarding the chemical interactions of furans with other hydrocarbons. There are also open questions about the toxicity of the byproducts of combustion.

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“…The complexity is arguably further exacerbated by emerging future fuels, where a fuel such as ethanol with high sensitivity (i.e. relatively high RON but low MON) may help reduce the onset of knock [1,[33][34][35] but could theoretically exacerbate sporadic pre-ignition under certain conditions due to the increased pre-ignition tendency as indicated by the lower MON rating [36].…”

Section: Introductionmentioning

confidence: 99%

The competing chemical and physical effects of transient fuel enrichment on heavy knock in an optical spark ignition engine

et al. 2016

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The version presented here may differ from the published version or from the version of record. If you wish to cite this item you are advised to consult the publisher's version. Please see the repository url above for details on accessing the published version and note that access may require a subscription. Under normal operation the engine was operated under port fuel injection with a stoichiometric airfuel mixture. Multiple centred auto-ignition events were regularly observed, with knock intensities of up to ~30bar. Additional excess fuel was then introduced directly into the end-gas in short transient bursts. As the mass of excess fuel was progressively increased a trade-off was apparent, with knock intensity first increasing by up to 65% before lower unburned gas temperatures suppressed knock under extremely rich conditions. This trade-off is not usually observed during conventional low intensity knock suppression via over-fuelling and has been associated with the competing effects of reducing auto-ignition delay time and charge cooling/ratio of specific heats.Overall, the results demonstrate the risks in employing excess fuel to suppress knock deep within a heavy knocking combustion regime (potentially including a Super-Knock regime).

show abstract

Study of the knocking propensity of 2,5-dimethylfuran–gasoline and ethanol–gasoline blends

Cited by 105 publications

References 33 publications

Experimental investigation on the knocking combustion characteristics of n-butanol gasoline blends in a DISI engine

Experimental investigation on the knocking combustion characteristics of n-butanol gasoline blends in a DISI engine

Recent Trends in the Production, Combustion and Modeling of Furan-Based Fuels

The competing chemical and physical effects of transient fuel enrichment on heavy knock in an optical spark ignition engine

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