CRANK-CONNECTING ROD MECHANISM

摘要

A crank-connecting rod mechanism for an internal combustion engine or the like comprises a shaft (1) rotating around its axis, a frist crank (2) fixed to the shaft and a crank pin (3) fixed to the first crank. A crank pin extends parallel to but at a first radial distance from the shaft. A second crank rotatably mounted onto the first crank pin is fixed to a second crank pin (4) having an axis at a second radial distance from the axis of the first crank pin (6). A connecting rod (12) is rotatably mounted on the second crank pin (6). Rotary means (7) are provided to force the second crank to rotate relative to the first crank upon a rotation of the shaft (1).