Patent ID: 8302577

Claim:
An internal combustion engine comprising an crankcase upper part, a crankcase lower part, and an oil windage tray flanged onto the crankcase upper part from below, wherein the oil windage tray projects into the crankcase lower part, forms a wall for an oil mist roller that is actuated by rotation of a crankshaft, and comprises at least one carpenter's plane-like slot for separating oil droplets, wherein at least two slots are provided in a rotational direction of the crankshaft and in a rotational direction of the oil mist roller, wherein a return opening, through which oil mist-free gases or gases with at least a reduced oil mist content flow back, is provided in the wall of the oil windage tray after each slot, wherein the oil windage tray is arranged between displacer volumes, and the oil windage tray and the displacer volumes are configured as integral parts of an upper part of an oil return device, wherein the displacer volumes are positioned to maintain an adequate oil level thereby ensuring that the internal combustion engine is supplied with oil.