자연흡기 디젤엔진의 부분부하 조건에서 경유/1-데칸올 혼합 연료가 연소 및 배기 특성에 미치는 영향

초록

This study evaluates diesel/1-decanol blends (5–15%) in a naturallyaspirated single-cylinder diesel engine under 50% load. Increasing the decanolratio slightly reduced thermal efficiency and increased fuel consumption, primarilydue to higher viscosity and lower heating value hindering atomization. NOxemissions rose as increased fuel injection and poor mixing formed locally richzones where fuel-bound oxygen promoted oxidation. CO also increased due tomixture inhomogeneity and reduced excess air. In contrast, smoke opacity decreasedsignificantly for all blends as decanol’s oxygen content suppressed sootprecursors. The findings indicate that 1-decanol offers clear smoke reductionbenefits but requires optimization to address efficiency losses and increasedNOx/CO emissions.

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