PISTON ENGINE AND METHOD FOR ADJUSTING COMPRESSION RATIO

摘要

The piston engine with a variable compression ratio comprises a movable sleeve (4) that can be arranged to protrude into the combustion chamber (5) from the cylinder head (3) for reducing the volume of the combustion chamber (5), and to retract from the combustion chamber (5) for increasing the volume of the combustion chamber (5). The invention also concerns a method for adjusting the compression ratio of a piston engine.