One means to maintaining good piston-ring contact with the cylinder wall has been gas jets drilled into the piston crown and top-ring groove. When fuel ignites above the piston, heat and pressure ...

This will be more prevalent with pistons that place the top ring closer to the piston crown as this increases the temperature the ring must face. If either the piston or the top ring exhibit ...

Piston rings look like simple pieces of metal. But they're the lifeblood of the ICE process, honed through decades of ...