| 摘要 |
The invention relates to a method and device for pretensioning a belt drive of an internal combustion engine, comprising: a belt (5), which connects at least the belt pulley (1) of a crankshaft and the belt pulley (2) of a starter-generator, and; a tensioning device (8) that acts upon the pulling strand (6) of the belt (5). During a hypothetical starting of the starter-generator, the area of the belt (5) defined as the pulling strand (6) is situated in front of the belt pulley (2) when viewing in a normal direction of rotation of the belt pulley (2) of the starter-generator, and the area of the belt (5) defined as the return strand (7) is situated behind the belt pulley (2). In order to effectively prevent, particularly during the starting operation, a possible drop in the pretensioning force in the return strand (7), the invention provides that the belt drive is pre-positioned immediately before the starting process or immediately after switching off the internal combustion engine by a defined introduction of torque into the belt drive and counter to its normal direction of rotation. ® KIPO & WIPO 2007
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