| 摘要 |
The invention relates to an exhaust-gas turbocharger ( 1 ) as well as in particular a guide apparatus ( 13 ) for an exhaust-gas turbocharger ( 1 ). The guide apparatus ( 13 ) comprises of a ring of guide vanes ( 8 ), which are pivotable on a vane bearing ring ( 12 ) by means of vane studs ( 18 ). The vane studs ( 18 ) are each attached torque proof to a vane lever ( 11 ). The vane levers ( 11 ) feature vane-lever-engagement-means ( 17, 10, 46, 47 ), which interact with unison-ring-engagement-means ( 16, 10, 57 ) of a unison ring ( 9 ) which is pivotable with respect to the vane bearing ring ( 12 ) in a way, that pivoting the unison ring ( 9 ) with respect to the vane bearing ring ( 12 ) results in a synchronous movement of all vane levers ( 11 ) and with these all guide vanes ( 8 ). The unison ring ( 9 ) is radially supported on axial bosses ( 14 ) of several vane levers ( 11 ). The invention includes that at least one of the vane-lever-engagement-means features a lever stud ( 17 ) engaging with a sliding block ( 10 ) and that a unison-ring-engagement-means features a radial recess ( 16 ) corresponding to this at least one vane-lever-engagement-means, in which the sliding block ( 10 ) is movable. Alternatively or in addition the invention includes that at least one of the unison-ring-engagement-means features a unison ring stud ( 57 ) engaging with at least one sliding block ( 10 ) and that a vane-lever-engagement-means corresponding with said at least one unison-ring-engagement-means features a recess ( 46 ), in which the sliding block ( 10 ) is movable.
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