DLC Self-Lubricating Coating – Piston Rings CA2024-09-02Part Coating DLCコーティングpiston ring自己潤滑性コーティング565Bench Test30Hz reciprocating frequency, fully synthetic oil lubrication DLC Piston Rings – Wear Rate Test DLC Piston Rings – Coefficient of Friction Test DLC Piston Rings – Life Testing