| 摘要 |
An electromagnetic actuator includes two electromagnets arranged opposite one another, an armature movable back and forth between the electromagnets against the force of two mutually counteracting springs, and an adjusting device for adjusting the armature rest position. After several hours of operation, due to settling of components, the pre-tension of the springs changes. To counteract that and achieve a durable adjustment of the pre-tension, the actuator is pre-settled before being placed in service. In this regard, the springs are compressed in repeating compression cycles so often until the energy respectively stored therein due to their compression no longer or only insignificantly differs from the energy stored in the respective spring in a preceding compression cycle, and thereafter the pre-tension of the springs is adjusted. The electromagnetic actuator is useful for controlling the gas exchange in an internal combustion engine. |
