Oil cooled piston, contains PTFE coated channels for circulating the oil

摘要

The channels (11, 13-15, 17, 19, 20) for circulating the oil inside the piston (1) are coated with PTFE (22, 23). - An oil-cooled piston for an internal combustion engine is provided with internal channels for circulating the oil. At least part of the channel surface is coated with PTFE.