Two-stroke engine with inflatable moving combustion chamber

The utility model relates to a novel two-stroke engine, which is mainly composed of an engine body, a gas intake and exhaust mechanism, and a gas distribution compressor. The cylinder wall of a working cylinder is also provided with a gas exhaust port and a scavenging port; a gas cylinder head on the top part of the working cylinder is provided with a movable gas chamber and a gas exhaust valve which can carry out the up-and-down telescopic movement with a large amplitude and can stay still; the movable gas chamber and the gas exhaust valve can be controlled by cam type line-shaped grooved rails with different tracks through each hanging rod and each hanging wheel, and the laws of the movement of the movable gas chamber and the gas exhaust valve can be different; thus, all the work in a working cycle can be completed in the method that a working piston is matched with a gas distribution compressor. The utility model has the advantages of large power, thorough gas exhaust, sufficient air intake, little pollution of waste gas, etc.