| 摘要 |
<p>A cylinder head assembly (2) at least a first rotary valve (5), said valve,
€¢ having a substantially spherical body and
€¢ comprising
o a first opening (31) to the exhaust duct substantially parallel to the valve central axis of rotation, and
o a second opening that can be intermittently brought into fluid communication with the combustion chamber, and further comprising
€¢ a shaft fixed to the valve and coaxial with the valve central axis of rotation and located opposite the exhaust duct, said shaft being connected to a drive for rotating the valve in correspondance to the operating strokes of the piston in the cylinder.</p> |
