US 12,253,007 B2
Turbine assembly
Craig Stuart Thornhill Hasler, London (GB)
Assigned to Cummins Ltd., London (GB)
Filed by Cummins Ltd., London (GB)
Filed on Dec. 27, 2023, as Appl. No. 18/397,814.
Application 18/397,814 is a continuation of application No. 17/625,679, granted, now 11,891,921, previously published as PCT/EP2020/069095, filed on Jul. 7, 2020.
Claims priority of application No. 1909819 (GB), filed on Jul. 9, 2019.
Prior Publication US 2024/0125240 A1, Apr. 18, 2024
Int. Cl. F01D 9/02 (2006.01); F01D 9/04 (2006.01); F01D 17/16 (2006.01); F02B 37/02 (2006.01); F02B 37/24 (2006.01)
CPC F01D 9/026 (2013.01) [F01D 9/045 (2013.01); F01D 9/048 (2013.01); F01D 17/167 (2013.01); F02B 37/025 (2013.01); F02B 37/24 (2013.01); F05D 2220/40 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A turbine assembly for a turbocharger, the turbine assembly comprising:
a housing which defines a flow path between an inlet and an outlet, the housing extending around an axis, the housing comprising:
first and second volutes which define a respective first and second flow passage, a circumferential outlet portion of each of the first and second volutes being defined by first and second tongues;
a wall member; and
a first aperture in which a vane assembly is received;
wherein the vane assembly defines a turbine wheel-receiving bore; and
wherein the wall member and vane assembly define an annular passage between the circumferential outlet portions and the turbine wheel-receiving bore, at least one of the vane assembly and the wall member being axially displaceable relative to the other to adjust the extent to which the annular passage is open;
wherein the vane assembly comprises a plurality of vanes circumferentially distributed about the turbine wheel-receiving bore, each of the plurality of vanes comprising a leading edge and a trailing edge;
wherein the plurality of vanes comprises a first vane and a second vane, the first vane being the vane having its leading edge disposed in closest proximity to a tip of the first tongue, the second vane being the vane having its leading edge disposed in closest proximity to a tip of the second tongue; and
wherein a radial clearance is provided between the leading edge of the first vane and the tip of the first tongue, and wherein a radial clearance is provided between the leading edge of the second vane and the tip of the second tongue.