| 摘要 |
Two-stroke engine including a cylinder in which a piston moves, a means (6, 8; 21) allowing a pressurised charge to be admitted into the cylinder, and at least two admission slots (2, 4; 20) in the wall of the cylinder. According to the invention, the motor furthermore includes a means (5, 7; 30; 60) intended selectively to block the passage section of the slots for admission of the charge, as a function of at least one parameter of the running of the motor.
<??>the selective blocking means may consist, for example, of a rotary valve (30) placed facing the admission slot(s) (20) and including at least two transverse openings (32).
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