DME/空気層流燃焼速度と自己着火(熱工学,内燃機関,動力など)

概要

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Dimethyl ether (DME) receives attention as a promising alternative fuel for compression ignition engines and other combustion systems because of its high Cetane Number (almost equivalent to diesel fuel), good combustion-emission characteristics by a high oxygen content, easy handling and productivity etc. In order to make the most of such assets to practical use, it is indispensable to know the laminar burning velocities at wide range of temperatures and pressures and the auto-ignition behaviors. Measurements using a spherical combustion bomb equipped with heaters showed that the pressure and temperature exponents were -0.049, one order of magnitude smaller, and 2.02, slightly smaller than those of methane, respectively, and that the spontaneous ignition temperature is pressure-dependent at equivalence ratio φ=1.0 but turns to pressure-independent at equivalence ratio φ=2.0.
社団法人日本機械学会の論文
2006-03-25