Custom Cylinder Liner-Piston Ring Combination on Pin-onDisc for Lubricant Characteristic Study

Abstract

Tribology test can be conducted through several options of tribometer and most of the piston ring study was made using a reciprocating machine to replicate the actual engine mechanism. This study was to evaluate the lubricant characteristic of the coefficient of friction and wear rate using custom rig made for the pin-on-disc machine. The custom rig was designed to increase the contact surface between the piston ring and disc under rotational motion. The test was conducted under increasing speed (100, 200 and 300 rpm) and load (1, 2, 3, 5 kg). Results show the same increasing trending on wear rate while decreasing trend on the coefficient of friction for both speed and load test. Those consistent results are influenced by the good lubricant properties as well as proper design of piston ring holder.