| 摘要 |
A belt drive is provided, especially a timing-belt drive for an internal-combustion engine, with a driving gear of a driveshaft, at least one driven gear of a driven shaft, and a belt means, wherein the driving or the driven gear imparts additional irregularity to the belt drive due to its noncircular shape and its phase position, which leads to stable running of the belt means. A noncircular gear that can be mounted easily and in phase, as well as with a fixed position, is realized in that the driving or driven noncircular gear has in its in-phase rotational position a rotationally fixed connection to its driving or driven shaft.
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