A system consisting of a cylinder and a in the cylinder between a bottom dead center and an upper dead center can move up and down on piston

摘要

The invention relates to a system, consisting of a cylinder 6 and a in the cylinder 6 between a lower dead center (bdc) 8 and an upper dead center (tdc) 9 is movable up and down in a translatory manner piston 5, wherein at least in a section of a friction area are effective on note between the cylinder 6 and the piston 5 is provided a lubricant. According to the invention, a system, consisting of a cylinder 6 and a piston 5 is provided, in which the friction area of the piston 5 in the cylinder 6 is lubricated reliably. This is achieved in that, in the area of at least one dead center 7, 8, at least one in the direction of movement of the piston 5 extending longitudinal groove 9 for the supply of the lubricant to the friction area is provided.