| 摘要 |
An internal combustion engine includes a cylinder structure in which a crankshaft assembly is journalled for rotation about a main axis of a main crankshaft segment having a main axis. A crank web is attached to the main crankshaft segment and projects from the main crankshaft segment, and a crank pin structure is attached to the crank web and has a central axis that is parallel to the main axis and is spaced from the main axis by a distance D. A first mechanism attaches the inner end of a connecting rod to the crank pin structure and permits substantially longitudinal movement of the connecting rod relative to the crank pin structure. A second mechanism permits selective adjustment of the distance D. The second mechanism is coupled to the first mechanism in a manner such that an increase in the distance D is associated with longitudinal movement of the connecting rod toward the central axis of the crank pin structure and a decrease in the distance D is associated with longitudinal movement of the connecting rod away from the central axis of the crank pin structure.
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