Piston engine with adjustable compression ratio

摘要

The piston engine has cylinders in line in an engine block and pistons (6) in the cylinders, connected by connecting rods (5) to a crankshaft (1), the bearings of which are in eccentric rings (3). The rings are in bearing housings (4) in the engine block. At least some of them are fitted with a rotation device (7). A coupling element (8) is connected to the rotation device and also to an actuator (10). One ring may have a groove connected to an inward boring leading to the bearings.