Counterweight attached to connecting rod in internal combustion engine, has auxiliary element with ca, which is inserted into groove of main structure, and is secured at connecting rod by screw

摘要

The counterweight has main structure (1) that includes a groove, and several holes formed in lateral surface of groove. An auxiliary element (6) with cam (6a) is inserted into groove of main structure, and is secured at connecting rod (8) by screw (7). The auxiliary element is secured at connecting rod (4) by screw (2) and nut (3).