Abstract
Although it is reported that a particulate is reduced when an oxygenated fuels mixed to diesel engine fuel, the detailed reduction mechanism has not been solved. By this research, three kinds of almost equal oxygenated fuels of an oxygen content rate are mixed to the fuel which a particulate formation mechanism and the characteristic with the reaction fluid tube, and the result of having investigated the inhibition mechanism and the characteristic by each oxygenated fuels is reported.