| 摘要 |
<p>In an internal combustion engine (10) a piston (12) reciprocates within a cylinder (11) such that outward power strokes alternate with outward induction strokes. A power transfer lever (24) pivotally mounted intermediate its ends has one end connected to the piston (12), the other end being connected to a throw (29) of a crankshaft (25) through a crank rod (26). Reciprocation of the piston (12) causes rotation of the crankshaft (25) by transfer of forces through the transfer lever (24) and crank rod (26). The pivotal mount of the power transfer lever (24) is supported by eccentric means (30) rotatably driven through gear train (34, 35) at half crankshaft speed whereby the effective pivot point of the power transfer lever (24) oscillates laterally of the power transfer lever (24) causing successive outward strokes of the piston (12) to be alternately long and short strokes. The engine (10) may therefore be arranged so that the power stroke is shorter than the induction stroke.</p> |
