Abstract
In this research, the examination apparatus in which lubricities evaluation is possible was manufactured by arbitrary pressure according to the lubricities examination method (HFRR) of diesel fuel. The lubricity was examined about the DME (Dimethyl ether) for diesel engines using the examination apparatus. The fixed value was acquired, when an inside was changed into a seal state and the lubricity was measured. Consequently, it became a value about near diesel fuel, and when suitable lubricity was maintained, it has checked.