| 摘要 |
<p>An internal combustion engine (1) with electromagnetically actuated valves (9) comprising a variable volume combustion chamber (6), at least one suction duct (7) connecting the combustion chamber (6) with the suction manifold of the engine and at least one exhaust duct (8) connecting the combustion chamber (6) with the exhaust manifold of the engine, the internal combustion engine (1) further comprising, for each suction (7) and exhaust (8) duct, a respective mushroom valve (9) that can move from and to a closed position in which it closes the duct and an electromagnetic actuator (12) adapted on command to move the valve (9) to and from the closed position, the internal combustion engine (1) further comprising, for at least one of the valves (9), a device (17) for balancing the pressures exerted on the head (11) of the valve (9) and adapted to balance the pressure forces that tend to oppose the opening of this valve (9). <IMAGE></p> |
