なたね油乳化燃料による直噴式ディーゼル機関の性能に及ぼす噴射系の影響

概要

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Reproducible vegetable oils have many advantages as alternative fuels for supplementing diesel fuels. Compared with common diesel fuel, however, vegetable oils result in higher exhaust emissions and carbon deposits because of high viscosity and low volatility. The work presented here describes results of experiments with stable water-emulsified rapeseed oils in a small direct-injection diesel engine. The purpose of this paper is to investigate the improvement of engine performance and the reduction of exhaust emissions upon changing the injection nozzle diameter and the valve opening pressure. The results show that BSFC, HC, CO, and smoke emissions decrease simultaneously with decreased injection nozzle diameter as compared to gas oil. In the present experiment, the optimum nozzle diameter is 0.22 mm with regard to engine performance and exhaust emissions.
一般社団法人日本機械学会の論文
1995-01-25