| 摘要 |
<p>An internal combustion engine comprises a driving shaft (100), a pair of camshafts (40) for driving engine valves, a transmission connecting the driving shaft to a first of said camshafts (40) and a transmission (7) connecting the first camshaft to the second camshaft (40). The transmission connecting the two camshafts (40) to each other comprises a pair of articulated parallelogram mechanisms (L1, L2) each comprising two crank members (C1, C2) rotatable with end portions of the camshafts (40) and connected to each by means of a connecting rod (R1, R2). The crank members are made up of circular discs (C1, C2) eccentrically mounted on said camshafts (40) and rotatably received in circular openings (9) formed at the ends of the respective connecting rod (R1, R2). The two crank members (C1, C2) rotatable with the same camshaft (40) are spaced from each other by a determined angle (A).</p> |
