Abstract: An antipolishing ring arrangement utilized in a cylinder of a large combustion engine, which arrangement is supported on a cylinder sleeve, comprises at least two separate ring elements which are disposed one after the other in the axial direction of the cylinder sleeve.

Abstract: Connection arrangement for pressure medium ducts in a diesel engine for connecting at least two ducts (2,3), included in the same pressure medium system, located parallel in the longitudinal direction of an engine block (1) and being in successive order in the flow direction of the pressure medium circulation of the system, either together or separately with one or more devices or units, for instance with coolers (8,9), located on the side of the ducts and included in the pressure medium system in question so that a desired direction of flow is accomplished and that said connection prevents the pressure medium flow of the inlet side and of the outlet side of the device from being mixed with each other. The arrangement includes a set of different, preferably cylindrical, hollow duct assemblies (4) to be installed in a connection chamber made in the engine block at a desired location.