Head piston for IC engines is opposed to working piston within cylinder, with constant/variable volume combustion chamber formed between pistons

摘要

The header piston (2) is opposed to a working piston (3) within a cylinder (1), and a combustion chamber of constant or variable size is formed between the pistons. The piston unit incorporates components (4), e.g. injection nozzle/s and/or intakes and/or outlet and/or spark plugs and/or glow plug/s. A cylinder has apertures for intake and outlet, which are opened and closed by slides, by hydraulic, mechanical, pneumatic, or other means.