Abstract: An assembly can include a valve seat for an exhaust bypass valve of a serial turbocharger system where the valve seat includes a base portion and a wall portion that extends axially away from the base portion; and a gasket that includes a planar portion that defines a perimeter and a socket disposed interior to the perimeter, where the socket includes a valve seat surface axially recessed from the planar portion and configured to position the seat. In various examples, the valve seat is positioned in the socket of the gasket and fixed to the gasket. Various other examples of devices, assemblies, systems, methods, etc., are also disclosed.

Abstract: A turbocharger for internal combustion engines, having a heat shield disposed between a turbine housing and center housing of the turbocharger for shielding the center housing from exhaust gases passing through the turbine. The heat shield in one embodiment is centered on a generally conical surface of the center housing, by engagement between the conical surface and a centering portion of the heat shield. In another embodiment, the heat shield has a generally conical portion that is non-axisymmetric, having a plurality of radially enlarged lobes that engage a radially inwardly facing surface of the turbine housing for centering the heat shield.

Abstract: An assembly can include a valve seat for an exhaust bypass valve of a serial turbocharger system where the valve seat includes a base portion and a wall portion that extends axially away from the base portion; and a gasket that includes a planar portion that defines a perimeter and a socket disposed interior to the perimeter, where the socket includes a valve seat surface axially recessed from the planar portion and configured to position the seat. In various examples, the valve seat is positioned in the socket of the gasket and fixed to the gasket. Various other examples of devices, assemblies, systems, methods, etc., are also disclosed.

Abstract: A turbine of a turbocharger comprises a floating insert which defines a nozzle for passing a fluid and which is supported axially slidable with respect to a housing by a sliding support means. Said floating insert is axially supported by said guiding means formed by a portion of a center housing.

Abstract: A turbine of a turbocharger includes a floating insert which defines a nozzle for passing a fluid and which is supported axially slidable with respect to a housing by a sliding support. Furthermore, the turbine comprises a sealing member for preventing a flow of fluid between the floating insert and the housing. The sealing member is axially expandable and has a fixed end attached to the turbine housing and an opposite movable end attached to the floating insert.

Abstract: A turbine of a turbocharger having a floating insert which defines a nozzle for passing a fluid and that is supported axially slidable with respect to a housing by a sliding support. The turbine includes a gas shielding for preventing a flow of fluid from impinging on the sliding support.

Abstract: A turbocharger for internal combustion engines, having a heat shield disposed between a turbine housing and center housing of the turbocharger for shielding the center housing from exhaust gases passing through the turbine. The heat shield in one embodiment is centered on a generally conical surface of the center housing, by engagement between the conical surface and a centering portion of the heat shield. In another embodiment, the heat shield has a generally conical portion that is non-axisymmetric, having a plurality of radially enlarged lobes that engage a radially inwardly facing surface of the turbine housing for centering the heat shield.

Abstract: A turbocharger for internal combustion engines, having a heat shield disposed between a turbine housing and center housing of the turbocharger for shielding the center housing from exhaust gases passing through the turbine. The heat shield in one embodiment is centered on a generally conical surface of the center housing, by engagement between the conical surface and a centering portion of the heat shield. In another embodiment, the heat shield has a generally conical portion that is non-axisymmetric, having a plurality of radially enlarged lobes that engage a radially inwardly facing surface of the turbine housing for centering the heat shield.

Abstract: A turbocharger (20) having a sliding piston type variable turbine nozzle includes a tubular piston (40) disposed in a bore (32) of the turbine housing and axially slidable relative to the turbine housing, the piston being slidable between a closed position and an open position for blocking the nozzle (36) opening by an amount dependent on axial positioning of the piston so as to regulate flow into the turbine wheel (30). The turbine housing (32) and piston (40) are structured and arranged to define a cavity (50) therebetween, and there are seals (52a, 52b) between the turbine housing and piston for sealing the cavity, the turbine housing (32) defining a passage (54) connecting with the cavity (50) and adapted to be connected with a fluid source such that application of differential fluid pressure through the passage to the cavity urges the piston to axially slide in the turbine housing.

Abstract: A turbocharger for internal combustion engines, having a heat shield disposed between a turbine housing and center housing of the turbocharger for shielding the center housing from exhaust gases passing through the turbine. The heat shield in one embodiment is centered on a generally conical surface of the center housing, by engagement between the conical surface and a centering portion of the heat shield. In another embodiment, the heat shield has a generally conical portion that is non-axisymmetric, having a plurality of radially enlarged lobes that engage a radially inwardly facing surface of the turbine housing for centering the heat shield.

Abstract: A turbine of a turbocharger comprises a floating insert which defines a nozzle for passing a fluid and which is supported axially slidable with respect to a housing by a sliding support means. Furthermore, the turbine comprises a gas shielding for preventing a flow of said fluid from impinging on said sliding support means.

Abstract: A turbine of a turbocharger comprises a floating insert which defines a nozzle for passing a fluid and which is supported axially slidable with respect to a housing by a sliding support means. Furthermore, the turbine comprises a sealing means for preventing a flow of said fluid between said floating insert and said housing.

Abstract: A turbine of a turbocharger comprises a floating insert which defines a nozzle for passing a fluid and which is supported axially slidable with respect to a housing by a sliding support means. Said floating insert is axially supported by said guiding means formed by a portion of a center housing.

Abstract: A turbine housing assembly includes a tubular piston disposed in a bore of a turbine housing and axially slidable between a closed position and an open position for blocking a nozzle by an amount dependent on axial positioning of the piston. A bypass control member is disposed in the turbine housing and is slidable between a no-bypass position closing a bypass passage and a open bypass opening the bypass passage. The piston is structured and arranged to slide relative to the bypass control member for a part of a full stroke of the piston from the closed position toward the open position thereof, and then to engage the bypass control member and cause the bypass control member to slide together with the piston as the piston further slides toward the open position thereof such that the bypass control member is moved toward the bypass position.

Abstract: A turbine housing assembly includes a tubular piston disposed in a bore of a turbine housing and axially slidable between a closed position and an open position for blocking a nozzle by an amount dependent on axial positioning of the piston. A bypass control member is disposed in the turbine housing and is slidable between a no-bypass position closing a bypass passage and a open bypass opening the bypass passage. The piston is structured and arranged to slide relative to the bypass control member for a part of a full stroke of the piston from the closed position toward the open position thereof, and then to engage the bypass control member and cause the bypass control member to slide together with the piston as the piston further slides toward the open position thereof such that the bypass control member is moved toward the bypass position.

Abstract: A non-rotating turbocharger waste gate valve (130) for use in gasoline, diesel or other internal combustion engines. The cross section of the shaft (120) of valve (130) is oblong or otherwise non-circular, thus preventing rotation of valve (130) even under high load conditions. The elimination of valve rotation greatly reduces valve wear and increases the useful life of valve (130).