Abstract: An exhaust gas turbocharger includes a turbine casing (4) within which a turbine wheel (10) is rotatably arranged relative to an axis of rotation (1). A guide vane ring (22) is non-rotatably arranged which comprises variable guide vanes (44) which are arranged upstream of the turbine wheel (10) with respect to an exhaust gas flow. The guide vane ring (22) is centered by means of a matched pair of two contact surfaces (24, 26) pressed against each other with respect to the turbine casing (4), of which at least the one contact surface (24 or 26, respectively) is formed conically.

Abstract: An adjustable guide apparatus for a turbine, comprising a bearing ring with a plurality of guide vanes, wherein the guide vanes are rotatably mounted on the bearing ring with the aid of guide vane shafts, wherein in order to position the guide vane, the guide vane shaft is allocated an adjusting lever which engages in a rotatable rotating ring of the adjustable guide apparatus, and wherein, in order to be held in an exhaust gas guiding section of the turbine, the adjustable guide apparatus has a support ring, and wherein the support ring serves to mount the rotating ring. The rotating ring is radially and/or axially guided with the aid of at least one guiding element, wherein the guiding element is received on the support ring. Furthermore, the invention relates to a turbine with an adjustable guide apparatus and to an exhaust turbocharger.

Abstract: An adjustable guide apparatus for a turbine, comprising a bearing ring with a plurality of guide vanes, wherein the guide vanes are rotatably mounted on the bearing ring with the aid of guide vane shafts, wherein, in order to position the guide vane, the guide vane shaft is allocated an adjusting lever which is designed to be able to engage in a rotatable rotating ring of the adjustable guide apparatus, and wherein, in order to be held in an exhaust gas guiding section of the turbine, the adjustable guide apparatus has a support ring, and wherein the support ring serves to mount the rotating ring. In accordance with the invention the rotating ring is formed to be free of contact with the support ring. Furthermore, the invention relates to a turbine and to an exhaust turbocharger.

Abstract: An exhaust gas turbocharger includes a turbine casing (4) within which a turbine wheel (10) is rotatably arranged relative to an axis of rotation (1). A guide vane ring (22) is non-rotatably arranged which comprises variable guide vanes (44) which are arranged upstream of the turbine wheel (10) with respect to an exhaust gas flow. The guide vane ring (22) is centered by means of a matched pair of two contact surfaces (24, 26) pressed against each other with respect to the turbine casing (4), of which at least the one contact surface (24 or 26, respectively) is formed conically.

Abstract: An adjustable guide apparatus for a turbine, comprising a bearing ring with a plurality of guide vanes, wherein the guide vanes are rotatably mounted on the bearing ring with the aid of guide vane shafts, wherein in order to position the guide vane, the guide vane shaft is allocated an adjusting lever which engages in a rotatable rotating ring of the adjustable guide apparatus, and wherein, in order to be held in an exhaust gas guiding section of the turbine, the adjustable guide apparatus has a support ring, and wherein the support ring serves to mount the rotating ring. The rotating ring is radially and/or axially guided with the aid of at least one guiding element, wherein the guiding element is received on the support ring. Furthermore, the invention relates to a turbine with an adjustable guide apparatus and to an exhaust turbocharger.

Abstract: An adjustable guide apparatus for a turbine, comprising a bearing ring with a plurality of guide vanes, wherein the guide vanes are rotatably mounted on the bearing ring with the aid of guide vane shafts, wherein, in order to position the guide vane, the guide vane shaft is allocated an adjusting lever which is designed to be able to engage in a rotatable rotating ring of the adjustable guide apparatus, and wherein, in order to be held in an exhaust gas guiding section of the turbine, the adjustable guide apparatus has a support ring, and wherein the support ring serves to mount the rotating ring. In accordance with the invention the rotating ring is formed to be free of contact with the support ring. Furthermore, the invention relates to a turbine and to an exhaust turbocharger.