Processing

Please wait...

Settings

Settings

1. WO2012170754 - DOUBLE FLOW TURBINE HOUSING TURBOCHARGER

Note: Text based on automatic Optical Character Recognition processes. Please use the PDF version for legal matters

WHAT IS CLAIMED IS:

1. A turbine housing for a turbo charger, the housing comprising:

a body that defines an inlet for fluid communication with a fluid source, and a wall, the wall dividing the inlet into an inner inlet and an outer inlet; and

a fluid guide assembly disposed within the housing, the fluid guide assembly comprising a plurality of vanes that demarcate an inner volute and an outer volute within the housing, the inner volute being in fluid communication with the inner inlet and the outer volute being in fluid communication with the outer inlet, each vane of the plurality of vanes being fixed at a respective angle relative to a radial direction, the plurality of vanes guiding fluid flow from the outer volute to the inner volute.

2. The turbine housing of claim 1, wherein the fluid guide assembly further comprises a guide plate that is secured to the body, the plurality of vanes being secured to the guide plate.

3. The turbine housing of one or more of claims 1 and 2, wherein at least one of the vanes is positioned at a selected angle relative to the radial center of the turbine wheel.

4. The turbine housing of claim 3, wherein the selected angle is between approximately 30° and approximately 80°.

5. The turbine housing of claim 3, wherein the selected angle is between approximately 40° and approximately 70°.

6. The turbine housing of claim 3, wherein the selected angle is between approximately 50° and 60°.

7. The turbine housing of claim 3, wherein each of the vanes is positioned at the selected angle.

8. The turbine housing of claim 3, wherein the selected angle comprises a first selected angle, and wherein at least one other vane is positioned at a second selected angle relative to the radial center of the turbine wheel.

9. The turbine housing of claim 3, wherein the selected angle is measured from a radial line that runs through a center point of a turbine wheel opening and a center point of the vane, and a line that runs through the center point of the vane and a trailing edge of the vane.

10. The turbine housing of one or more of claims 1 to 9, wherein the vanes are positioned to provide an angle of incidence of fluid flow relative to a turbine wheel.

11. The turbine housing of claim 10, wherein the angle of incidence is at most

approximately 10°.

12. The turbine housing of one or more of claims 1 to 11, wherein the respective angle of each vane is provided to inhibit fluid flow separation across the vane.

13. The turbine housing of one or more of claims 1 to 12, wherein at least one of the vanes comprises a non-symmetrical airfoil shaped vane.

14. The turbine housing of one or more of claims 1 to 13, wherein the inlet comprises an inner fluid passage and an outer fluid passage, and wherein the inner fluid passage is in fluid communication with the inner volute.

15. The turbine housing of one or more of claims 1 to 14, further comprising a valve assembly for regulating fluid communication between the outer inlet and the outer volute, the valve assembly comprising a gate that is movable between a fully closed position to inhibit fluid flow through the outer inlet, and a fully opened position to enable fluid flow through the outer inlet.

16. The turbine housing of claim 15, wherein the respective angle of the vanes is approximately 60°, as measured from a radial line that runs through a center point of a turbine wheel opening and a center point of the vane, and a line that runs through the center point of the vane and a trailing edge of the vane, and the gate is positioned at 80% open to provide a peak efficiency of the turbocharger.

17. The turbine housing of claim 15, wherein the respective angle of the vanes is approximately 55°, as measured from a radial line that runs through a center point of a turbine wheel opening and a center point of the vane, and a line that runs through the center point of the vane and a trailing edge of the vane, and the gate is positioned at 80% open to provide a peak efficiency of the turbocharger.

18. The turbine housing of claim 15, wherein the respective angle of the vanes is approximately 50°, as measured from a radial line that runs through a center point of a turbine wheel opening and a center point of the vane, and a line that runs through the center point of the vane and a trailing edge of the vane, and the gate is positioned at approximately 100% open to provide a peak efficiency of the turbocharger.

19. A turbocharger, comprising a turbine housing in accordance with one or more of claims 1 to 18.

20. A method of manufacturing a turbine housing in accordance with one or more of claims 1 to 16, the method comprising:

forming the body, the body defining an inlet for fluid communication with a fluid source, and a wall, the wall dividing the inlet into an inner inlet and an outer inlet;

assembling the fluid guide assembly, the fluid guide assembly comprising the plurality of vanes that are each fixed at a respective angle relative to a radial direction; and securing the fluid guide assembly within the body such that the plurality of vanes demarcate an inner volute and an outer volute within the housing, the inner volute being in fluid communication with the inner inlet and the outer volute being in fluid communication with the outer inlet, the plurality of vanes being operable to guide fluid flow from the outer volute to the inner volute.