Back to results
US 4,726,744 AGranted
Tubocharger with variable vane
AssigneeHousehold Manufacturing, Inc.
InventorSteven D. Arnold
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeHousehold Manufacturing, Inc.
InventorSteven D. Arnold
Estimating the term…
A turbocharger having a plurality of adjustable vanes for varying gas flow to the turbine impeller of the turbocharger so as to vary the output power of the turbine. In a preferred embodiment, the turbocharger comprises a turbine empeller and a compressor impeller mounted for rotation on a common shaft. The turbocharger also includes a inlet turbine housing defining a volute shaped toroid about the periphery of the turbine impeller and having a generally circular opening forming a mating surface. An outlet turbine housing is secured to the turbine inlet housing and projects into the opening of the turbine inlet housing so as to define at least one bore. The turbocharger includes at least one vane comprising an airfoil portion, and integral shaft portion projecting from the airfoil portion, and an actuating arm portion extending from the shaft portion and having an integral pin portion. The airfoil portion is located between the volute shaped toroid and the periphery of the turbine impeller and the shaft portion is rotatably mounted in the bore. An actuating ring having a slot engaging the pin portion is provided to rotate the vane shaft portion so as to vary the orientation of the airfoil portion.
A turbocharger having a variable power turbine portion, the turbocharger comprising a turbine impeller and a compressor impeller mounted for rotation on a common shaft, a turbine inlet housing for inflow of a gas to the turbine impeller, the inlet housing defining a volute shaped toroid about the periphery of the turbine impeller, at least two vanes each comprising an airfoil portion, a shaft portion having an axis and extending from the airfoil portion, and an actuating arm portion projecting from the shaft transverse to the axis of the shaft portion, the vanes being circumferentially spaced about the periphery of the turbine impeller with the airfoil portion being between the turbine impeller and he volute shaped toroid, and annular actuator ring having an inner circular surface and including a slot for each vane, each slot engaging an actuating arm portion of one vane such that upon rotation of the ring, the vane shaft portions rotate, said actuator ring being rotatably supproted by at least some of the vane shaft portions engaging the inner circular surface of the actuator ring, and means for rotating said actuator ring.
A turbocharger having a variable power turbine portion, the turbocharger comprising a turbine impeller having a periphery and a compressor impeller mounted for rotation on a common shaft, an inlet turbine housing defining a volute shaped toroid about the periphery of the turbine impeller for the inflow of gas, the inlet turbine housing having a generally circular opening forming a mating surface, a turbine outlet housing having a mating surface and being secured to the turbine inlet housing, at least one of the mating surfaces having a channel therein, the outlet turbine housing projecting into the opening of the turbine inlet housing projecting into the opeing of the turbine surfaces contact each other, the channel of one mating surface cooperating with the other mating surface so as to define at least one bore, at least one vane comprising an airfoil portion, an integral shaft portion projecting from the airfoil portion, and an integral actuating arm portion transverse to the axis of the shaft portion, said airfoil portion being located between the volute shaped toroid and the periphery of the turbine impeller and said shaft portion being rotatably mounted in said bore, and means for rotating said vane shaft portion to vary the orientation of the airfoil portion of the vane.
Dependencies are inferred from the claim text.