抄録
This study was aimed at the improvement of piston lubrication of the diesel engine by means of the DLC coating for the piston skirt and the rings. For this purpose, piston frictions measured by floating liner method in between the DLC coating and conventional coating were compared. As the results, it was confirmed that the DLC coating for the skirt and rings deteriorate the state of piston lubrication against the conventional cast iron cylinder and that their state of lubrications were improved when the DLC coated cylinder was used.
