601 軽油およびDMEを着火源とする天然ガス希薄燃焼機関に関する研究(オーガナイズドセッション : 環境問題とエネルギー)

概要

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In order to reconcile ultra low NOx emission with homogeneous charge compression ignition combustion (HCCI) and ignition control with spray combustion, dual fueled combustion was investigated. The premixed lean natural gas/air mixture was ignited by a diesel fuel or DME burned gas from a small auxiliary chamber. With this system, the inflammable lean limit was extended to equivalence ratio of 0.2. Thermal efficiency was reduced by 20% or more compared with a base diesel engine, whereas, smoke level maintained below 0.3 BSU even under the high load condition. NOx was very low in low and middle load range, while NOx increased rapidly in high load range over equivalence ratio of 0.4.
社団法人日本機械学会の論文
2001-09-20