A large reciprocating piston combustion engine, a control apparatus and a method for controlling such an engine

A large reciprocating piston combustion engine (1) comprises at least one cylinder equipped with a cylinder liner (4), at least one piston (6) movably arranged within the cylinder liner, and a crankshaft (2) rotatably arranged in a crankshaft housing, with each piston being connected to a crosshead (8) via a piston rod (7) and with the crosshead being connected to the crankshaft (2) via a connecting rod (9) to drive the crankshaft, wherein each cross head (8) is provided with a control apparatus (10) for controlling the compression ratio of the reciprocating piston combustion engine.