| 摘要 |
<p>The invention relates to a pneumatic adjusting drive (16) for a wastegate valve (9) of a turbine (2) of an exhaust gas turbocharger (1) of an internal combustion engine having a housing (17), in which a separating element (18) separating a control pressure chamber (20) from a reference pressure chamber (21) is adjustably arranged, with a drive rod (28) for the drive coupling to the wastegate valve (9), which is connected to the separating element (18) in a fixed manner, and with a resetting spring device (29) arranged in the housing (17), which drives the separating element (18) with a preload force (30) in the direction of the control pressure chamber (20). A simplified handling is obtained with a force adjusting device (32) for changing the preload force (30) with the drive rod (28) not coupled to the wastegate valve (9).</p> |
