Influence of Oxymethylene Ethers (OMEn) in Mixtures with a Diesel Surrogate

Abstract

Within this work the effects of blending oxymethylene ethers (OMEn) to a diesel surrogate (50 mol% n-dodecane, 30 mol% farnesane, and 20 mol% 1-methylnaphthalene) were investigated by performing two different types of experiments: measurements of the sooting propensity and of the laminar burning velocity, each in laminar premixed flames. For the sooting propensity, OME3, OME4, and OME5 were considered as blending compounds—each in mass fractions of 10%, 20%, and 30%. The sooting propensity was found to depend strongly on the OMEn blending grade but not on its chain length. In addition, the effect on the laminar burning velocity was studied for OME4 and the admixture of 30% OME4 with diesel surrogate for the first time. This admixture was found to lead to increased burning velocities; however, much less than might be foreseen when considering the respective values of the neat fuels.

A study on fundamental combustion properties of oxymethylene ether-1, the primary reference fuel 90, and their blend: Experiments and modeling

“…In general, the decomposition and oxidation of hydrocarbons reveal a lower reactivity than OMEn explaining the lower values of the LBVs obtained for PRF90. The results from the present study as well as from a study on OME4 / diesel surrogate [49] show that hydrocarbon components have a stronger effect on the total reaction rate of the oxidation of OMEn / fuel blends than OMEn components. al.…”

Investigation of the combustion chemistry in laminar, low-pressure oxymethylene ether flames (OME0–4)

“…As a consequence, the position of the reaction zone is moving to larger distances with decreasing chain length [51]. Indeed, the laminar flame speed is found to increase with the OME chain length [15,16,52,53]. This is even more obvious when the CH2O peak maxima, one of the first species formed (see Fig.…”

Evaluation of the Applicability of Synthetic Fuels and Their Life Cycle Analyses

“…Depending on the composition, it may be necessary to heat HFO in order to enhance the flow properties. OME 3-5 is a possible oxygenated blending component for diesel; this approach will allow for a considerable reduction in soot emissions [51], but it might require the modification of sealing materials. Moreover, there is currently no standard allowing the use of OME 3-5 in ship engines.…”