The refinement of the contact compression ring chamfer for race engine conditions

Abstract

Use of COMSOL Multiphysics: In operation, the piston ring is surrounded by gas acting on it, using effect of chamfer design has been considered using Love’s equation in conjunction with Stone’s equation for force ad Miler’s equation for gas pressure modelling. The chamfer geometry was controlled through variable inputs such as coating thickness, ring thickness, distance from the ring angle ring to cylinder to incorporate the tilt. The simulation has considered variables such as position, time to impact during contact between the cylinder liner and the piston ring coating. These procedures allows for the shearing process to simulate at 10,000 rpm. Results: The results of this simulation confirmed ISO 6622-1 on dimensions for ring contact chamfer.