| 摘要 |
A device for optimizing the efficiency of an internal combustion explosion engine of the type comprising at least one cylinder (2) within which a piston (1) moves, said cylinder receiving an air-fuel fresh gas mixture via an intake system or channel (13, 20) incorporating at least one relative usual intake valve (7), from said cylinder (2) there emerging spent gas directed to an exhaust pipe (S) via an exhaust system or channel (12, 21), said channel incorporating at least one relative usual exhaust valve (9). Within said intake channel (13, 20) and/or within said exhaust channel (12, 21) there are provided fixed or movable means (27) arranged to modify the useful gas passage section so as to modify the velocity and pressure of the gas flow directed towards the cylinder (2) or exhaust pipe (S). In this manner better air-fuel mixing is achieved.
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