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

Numerical Study of Premixed PODE3-4/CH4 Flames at Engine-Relevant Conditions

“…In order to gain more insight into the reaction process of PODE 3-4 /CH 4 mixtures, this study uses the updated Cai* mechanism to calculate the species profile of the mixture combustion process and the laminar burning velocity under different conditions and compares the calculations with experimental data from the literature. Sun et al [29] and Gaiser et al [33] studied the component concentration distribution on a Mckenna burner. Figure 3a,b show the component concentration distribution against the height above the burner (HAB), respectively.…”

“…Dagaut et al [27] studied the oxidation of PODE 1 on a jet stirred reactor at a pressure of 5.07 bar, temperature of 800-1200 K, and equivalence ratios (φ) of 0.444, 0.889, and 1.778, respectively, and obtained the concentration distribution of some intermediate components; Sun and Wang et al [28] studied the component concentration variation of the combustion process of PODE 3 /O 2 at low pressure (p = 33.3 mbar) and 50% argon dilution in a McKenna burner; Sun and Tao et al [29] studied the reaction pathways and the concentration distribution of intermediate components in PODE 1 /O 2 /Ar mixtures at low pressure, lean combustion (p = 750 Torr; φ = 0.5), and high-pressure conditions (p = 10 atm, φ = 0.2, 0.5, and 1.5) on a jet stirred reactor; Vermeire et al [30] studied the oxidation of PODE 1 on a jet stirred reactor at a pressure of 1.07 bar, temperature of 500-1000 K, and φ of 0.25, 1.0, 2.0, and ∞, respectively; Golka et al [31] studied the single-molecule pyrolysis of PODE 1 at a pressure of 1 bar and a temperature of 1000-1700 K. The concentrationtime profiles of important intermediate components such as CO, CH 2 O, and C 2 H 6 were recorded; Peukert et al [32] measured the product distribution during the decomposition of PODE 1 at a pressure of 1.2-2.5 bar and a temperature of 1100-1430 K in a shock tube. Gaiser et al [33] investigated the effect of different CH 2 O polymerization levels on the component concentration distribution during laminar flame of PODE at low pressures in a McKenna burner.…”

“…In recent years, basic combustion studies on PODE have mainly focused on unit fuels, and the combustion characteristics of PODE blended with other fuels have not been sufficiently studied; only Herzler et al [26] reported that the PODE 1 /CH 4 mixture was measured in a shock tube at temperatures from 600 to 1500 K, pressures of 30 bar, and φ of 0.5, 1.0, 2.0, and 10. In addition, Zhang et al [34] recently investigated the intermediate component concentration distribution of PODE 1 -blended CH 4 dual fuel during combustion under low pressure and rich combustion conditions on the same burner used by Gaiser et al [33]. No studies on the combustion characteristics of PODE-Fuels 2024, 5 92 blended CH 4 at a higher temperature and pressure have been reported in the literature, and previous basic combustion studies mainly used argon as the dilution gas, neglecting the NO x emissions during fuel combustion, whereas, in the engine combustion experiments by Liu et al [15], it was pointed out that NO x emissions should be the focus of PODE combustion emission studies.…”

Combustion, Chemistry, and Carbon Neutrality

“…Further recent work addresses individual OME compounds including OME 2 , − OME 3 , and comparative studies on the complete or part of the series of OME 0 to OME 5 . ,,− Beyond global parameters (such as overall reactivity, ignition delay times and laminar burning velocities), thermochemical values, species profiles, , and emission characteristics for the OME fuel family are being reported, providing important input for further consistent mechanism development and modeling activities. The example in Figure shows the behavior of DME (OME 0 ), OME 1 , and OME 2 regarding exhaust emissions of CO and NO x for three equivalence ratios .…”

Bioderived ether design for low soot emission and high reactivity transport fuels

“…47 There are many studies on their combustion characteristics, 48 and a detailed kinetics model is also available for some POMEs. 48,49 Meanwhile, the present study focused more on the molecular features whose role in the combustion chemistry has not been signicantly exploited; the branched structure, the ring structure, and an additional oxygen atom in a ring. Moreover, the important molecular features of POMEs are included in DAE, EMD, and IBMD; thus, we believe that the CN and YSI of POMEs can be inferred based on the results of the present study.…”