| 摘要 |
t is disclosed an internal combustion engine initiated by a cam (5) and two secondary auxiliary valves (7,8) or (19,20) facilitating the inlet and outlet timing. The cylinder head (3) of said engine bears one ordinary valve (4) per cylinder. Each cylinder (1) bears, at a predefined height, the port (26) provided with a capacity changing valve (25) or (27) wherefrom, throughout compression and -in case of capacity change, if needed- a controlled quantity of air escape. The ordinary inlet and outlet valve (4) increases the compression ratio at high degrees and, being sufficiently cooled, it prevents self-ignition phenomena. The capacity changing valve is susceptible, if desired, to reduce the engine capacity and, consequently, the combustible combustion and the emission of pollutants as well. |
