Piston for use in cylinder accommodated by internal combustion engine, has piston head, which has cooling channel extending in circumferential direction, where oil guiding unit is provided for guiding oil discharged from oil discharge port

摘要

The piston (3) has a piston head (12), which has a cooling channel (21) extending in a circumferential direction. An oil guiding unit is provided for guiding the oil discharged from an oil discharge port on an inner surface of a cylinder. The oil guiding unit is integrally provided in a cover. A pair of pin-carrying walls (13) is set from the opposite sides of the piston head.