Abstract: A piston engine which includes an engine block composed of a base material. The engine which block has a cylinder block with at least one cylinder formed therein, a piston located in the cylinder, and a crankshaft connected to the piston and being mounted on crankshaft bearings disposed in a crankcase of the engine block. The engine further includes a plurality of reinforcing components connected to the walls of the engine block. The reinforcing components are composed of a component material that is different from the base material and has a higher modulus of elasticity than the base material.

Abstract: A piston internal combustion engine includes an engine block made of a base material and including a cylinder block having walls. Segmented, rib shaped reinforcements are disposed on the engine block, each reinforcement defining breaks along a course thereof, the reinforcements further being made of a material having a higher modulus of elasticity than the base material.