エタノール混合ガソリンの品質評価(<特集>バイオマス液体燃料の開発動向と今後の展開)

概要

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An ethanol-blended gasoline is widely introduced into the market in Europe, USA, and Brazil. In Japan, the study on the fuel was carried out by Agency of National Resources and Energy, and concluded that the maximum blending ratio of ethanol should be less than 3% (E3) because of safety for existing vehicles which are not designed to use an ethanol-blended gasoline. The tests showed the following results: 1) A blending of ethanol into commercial gasoline slightly increases NO_x emission, but reduces CO and HC emissions. 2) Also, the fuel increases evaporative emissions. 3) The fuel deteriorates materials used in fuel system of existing vehicles. Especially, the corrosion of aluminum due to ethanol is remarkable. 4) Phase separation of ethanol-blended gasoline caused by the increase in water concentration of the fuel is major issue in distribution system of the fuel. The demonstration test using 6 service stations in the market is carried out to grasp the effects of E3 on existing distribution system of gasoline in the field.
一般社団法人日本エネルギー学会の論文
2005-05-20