Concentric piston for variable compression ratio directly based on the combustion chamber pressure

摘要

This invention produces a variable compression ratio in internal combustion engines, based on a sliding concentric piston which moves up by an internal spring and down by the different changing pressures over the concentric piston head, within the combustion chamber. This invention changes the compression ratio in an instantaneous and continuous way, depending directly on the pressure of the fuel mixture load in the combustion chamber.