| 摘要 |
<p>A variable geometry exhaust system for two stroke internal combustion engines comprises an exhaust pipe (1) through which burnt gases are discharged, and an axially slidable element (2) placed inside said pipe, formed by a stem portion and with one end (3) of gradually diminishing section that faces back into the pipe. The slidable element cooperates with the pipe to create a passage (4) through which the gases are directed, and is displaceable by way of an associated mechanism (17) as the revolutions per minute of the engine increase or decrease. <IMAGE></p> |
