Honeywell International Inc.

Garrett Transportation I Inc.

Denis Jeckel

Philippe Arnold Arnold

Dominique Petitjean

Christophe Riviere

Pierre Barthelet

Emmanuel Severin

Giorgio Figura

Nicolas Morand

Peter Rhys Davies

Karl-Heinz Bauer

Eric Dechanet

Lorrain Sausse

Chris Groves

Shankar Pandurangasa Solanki

Anthony Ruquart

Guillaume Dupont

Nathaniel Bontemps

Gregory Do

Philippe Arnold

Georgio Figura

A turbocharger includes a housing and a rotor with a shaft that is housed within the housing. The turbocharger also includes a bearing structure that supports rotation of the shaft within the housing and a locating fastener that retains the bearing structure in a position relative to the housing. Furthermore, the turbocharger includes a heating system coupled to the locating fastener and that is configured for selectively heating the locating fastener.

Turbocharger with temperature-controlled bearing locating fastener

An assembly can include an exhaust gas turbine housing that includes an inner wall and an outer wall that define a first exhaust gas channel and a second exhaust gas channel to a turbine wheel space where the inner wall includes an inner wall end at the turbine wheel space and the outer wall includes an outer wall end at the turbine wheel space; a first adjustable divider vane disposed adjacent to the inner wall end; a second adjustable divider vane disposed adjacent to the outer wall end; and at least one set of adjustable variable geometry nozzle vanes that define nozzle throats that direct flow of exhaust gas from one of the exhaust gas channels to the turbine wheel space.

Variable geometry nozzle for partitioned volute

A turbocharger includes a variable turbine nozzle formed between first and second walls. A variable-vane assembly has a fixed nozzle ring and a plurality of circumferentially spaced vanes disposed in the nozzle and rotatably mounted on the nozzle ring such that the vanes are pivotable. The nozzle ring defines the first wall of the turbine nozzle, each vane having a first end adjacent the first wall and a second end adjacent the second wall. The second wall of the turbine nozzle is formed by a gas pressure-responsive member that is arranged to be axially movable relative to the vanes. A first stop is positioned so that the gas pressure-responsive member is urged against the first stop by a differential gas pressure exerted on the gas pressure-responsive member so that there is a non-zero first value for a clearance between the second ends of the vanes and the second wall of the turbine nozzle.

Turbocharger with variable-vane turbine nozzle having a gas pressure-responsive vane clearance control member

A variable-nozzle assembly for a turbocharger includes a generally annular nozzle ring and an array of vanes rotatably mounted to the nozzle ring such that the vanes can be pivoted about their axes for regulating exhaust gas flow to the turbine wheel. A unison ring engages vane arms that are affixed to axles of the vanes, such that rotation of the unison ring causes the vanes to pivot between a closed position and an open position. The vanes have proximal ends that are adjacent a face of the nozzle ring. A vane sealing member is supported on the nozzle ring and has a portion disposed between the proximal ends of the vanes and the face of the nozzle ring. The unison ring includes cams that engage cam followers. Rotational movement of the unison ring causes the cam followers to be moved axially and thereby urge the vane sealing member against the proximal ends of the vanes.

Turbocharger variable-nozzle assembly with vane sealing arrangement

A variable nozzle for a turbocharger includes a plurality of vanes rotatably mounted on a nozzle ring and disposed in a nozzle flow path defined between the nozzle ring and an opposite nozzle wall. Either or both of the faces of the nozzle ring and nozzle wall include(s) grooves extending substantially transverse to a general flow direction of the flow through the nozzle, and there are clearances between the ends of the vanes and the adjacent faces. Leakage flow through the clearance between the end of each vane and the adjacent face having the grooves must proceed across the grooves, and thus a labyrinthine flow passage is presented to the leakage flow. The labyrinthine passage has a greater resistance to flow than would be the case without the grooves. Accordingly, leakage flow is reduced, which is beneficial to turbine efficiency.

Turbocharger with variable nozzle having labyrinth seal for vanes

A variable nozzle for a turbocharger includes a plurality of vanes rotatably mounted on a nozzle ring and disposed in a nozzle flow path defined between the nozzle ring and an opposite nozzle wall. Either or both of the faces of the nozzle ring and nozzle wall include(s) at least one step that defines sealing surfaces positioned to be substantially abutted by airfoil surfaces of the vanes in the closed position of the vanes and to be spaced from the airfoil surfaces in positions other than the closed position. This substantial abutment between the airfoil surfaces and the sealing surfaces serves to substantially prevent exhaust gas from leaking past the ends of the airfoil portions. At the same time, clearances between the nozzle ring face and the end faces of the airfoil portions can be sufficiently large to prevent binding of the vanes under all operating conditions.

Turbocharger with variable nozzle having vane sealing surfaces

A turbocharger comprises a variable nozzle device and an exhaust housing being mechanically and/or thermally decoupled from the variable nozzle device. Additional optional advantageous features are provided, including various axial and radial clearances and various sealing elements.

Turbocharger comprising a variable nozzle device

A cartridge is formed by an insert fixed to a base to form turbine intake nozzles in which vanes are rotatably mounted, and the base is fixed to a center housing. A separate exhaust housing which is formed from sheet metal is fixed to the cartridge outside of the insert in order to provide an intake and an outlet for exhaust gases driving a turbine wheel on a shaft journaled in the center housing.

Growing community of inventors

Thaon les Vosges, France

Denis Jeckel