Influence of unsaturation of hydrocarbons on the characteristics and carcinogenicity of soot particles

Dandajeh, Hamisu Adamu; Ladommatos, Nicos; Hellier, Paul

doi:10.1016/j.jaap.2020.104900

Cited by 6 publications

(1 citation statement)

References 20 publications

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“…For centuries now, compression engines fuelled with fossil diesel have been effective for power generation and heavy duty road transportation systems [1], [2]. Despite these significant contributions, they still suffer hugely from exhaust particulate emissions which degrade atmospheric air quality due to the toxicity of such particulates [3], [4,5]. Inhalation of particulate contaminated air has led and still leading to the rising global human morbidities and mortalities [6].…”

Section: Introductionmentioning

confidence: 99%

Effect of equalising ignition delay on combustion and soot emission characteristics of model fuel blends

Dandajeh

Ladommatos

Hellier

2022

J. Cent. South Univ.

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This paper examines the effect of equalizing ignition delay in a compression ignition engine. Two sets of tests were conducted. A constant injection timing tests with start of fuel injection at 10 o CAD BTDC and a constant ignition timing tests while also keeping the 10 o CAD BTDC injection and adding ignition improver (2ethylhexylnitrate -2EHN) to the fuel mixtures. Soot particles were characterised using DMS-500 instrument in terms of mass, size, and number. The experimental results showed that adding 2-EHN to the model fuel blends reduced the soot surface area, soot mass concentration and soot mean size. Replacing 20% (vol) of a C7-heptane, with 20% of methyl-decanoate (an oxygenated C11 molecule) did not affect the ignition delay or rates of fuel air premixing, the peak in-cylinder pressure and heat release rates. Toluene addition (0 -22.5% by vol) to heptane increased the mean size of the soot particles generated by only 3% while also resulting in a slight increase in the peak cylinder pressure and peak heat release rates. Blending toluene and methyl-decanoate into heptane without adding-2EHN increased the premix phase fraction by at least 13%. However, adding 2EHN (400 -1500ppm), the premixed phase fraction decreased by at least 11%.

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