軽油へのOME混合が燃料性状とディーゼル機関性能に及ぼす影響

抄録

Synthetic fuel derived from renewable energy is expected as a means of reducing CO₂ in internal combustion engines. OME (OxyMethylene Ether) can be handled like a diesel fuel because its specification of distillation is almost same with it. Therefore, it is expected to introduced in the market as alternative or additional fuel. In this report, fuel properties, engine performance, combustion characteristics and exhaust emission of OME and its diesel blended fuels were investigated.

The energy density was decreased with increasing of OME blending ratio because the energy density of OME is lower than that of diesel fuel. Since OME fuel has the effect of expanding rubber materials, an immersion test of rubber material was conducted with OME blending diesel fuel. As the result, exceeding permissible range was observed with beyond 10% OME blending. Engine power was decreased under same injection quantity condition with increasing OME blending ratio because of its lower energy density. In the test under the same torque condition, blending OME with diesel fuel resulted in deterioration of thermal efficiency and reduction of SOOT, HC, and CO emissions.