| 摘要 |
<p>A rotary valve mechanism for a reciprocating heat engine having a cylinder (13), a piston (12) reciprocating in the cylinder and a cylinder head (11) defining a combustion chamber (14), the rotary valve mechanism consisting of a cylindrical valve rotor (15) supported for rotation in the cylinder head (11), the valve rotor having at least one gas port (18, 19) passing through its cylindrical surface, mechanical means (41) to rotate the valve rotor (15) in a timed relationship with the movement of the piston (12), a cylindrical valve housing (22) in the cylinder head surrounding the valve rotor (15) and providing a cylindrical inner surface in sliding sealing contact with the outer cylindrical surface of the valve rotor (15), the valve housing (22) having a longitudinally extending split (23) in its circumference, and defining a gas conducting port (21) to provide a communication path between the rotor gas port and the combustion chamber (14), the external cylindrical surface of the valve housing being in contact with an internal cylindrical surface of the cylinder head (11) opposite the port (21), a resilient annular seal (24) arranged between the valve housing (22) and the cylinder head (10) extending around the port, the sealing means acting on the valve housing (22) in conjunction with gas pressure generated in the cylinder (13) to force the valve housing against the internal cylindrical surface of the cylinder head (10), the force being transmitted through the valve rotor (15).</p> |
