HOUSING FOR AN INTERNAL COMBUSTION ENGINE

• US 20130014497A1
• Filed: 07/15/2011
• Published: 01/17/2013
• Est. Priority Date: 07/15/2011
• Status: Abandoned Application

• Current Assignee: GM Global Technology Operations LLC (General Motors Company)
• Original Assignee: GM Global Technology Operations LLC (General Motors Company)
• Inventors: Wu, Ko-Jen, Baker, Rodney E., Walter, Darrel J.
• Application Number:
  US13/183,989
• Publication Number:
  US 20130014497A1
• Time in Patent Office: Days
• US Class Current: 60/323
• CPC Class Codes: F01D 9/026 Scrolls for radial machines or engines
• CPC Class Codes: F01N 13/10 of exhaust manifolds with cooling jacket F01N3/046
• CPC Class Codes: F02B 37/025 Multiple scrolls or multiple gas passages guiding the gas to the pump drive
• CPC Class Codes: F05D 2220/40 in turbochargers
• CPC Class Codes: Y02T 10/12 Improving ICE efficiencies

Abstract

In one exemplary embodiment of the invention, a housing for an internal combustion engine includes a manifold section configured to receive an exhaust gas flow from cylinders of the internal combustion engine and a turbine section, wherein the turbine section and manifold section are a single member. Further, the housing includes a volute chamber within the turbine section configured to direct the exhaust gas flow to a turbine wheel disposed about a turbine axis and a circumferential septum positioned inside the volute chamber to separate two chambers that are substantially nested about the turbine wheel.

Claims

1. A housing for an internal combustion engine, the housing comprising:

a manifold section configured to receive an exhaust gas flow from cylinders of the internal combustion engine;

a turbine section, wherein the turbine section and manifold section comprise a single member;

a volute chamber within the turbine section configured to direct the exhaust gas flow to a turbine wheel disposed about a turbine axis; and

a circumferential septum positioned inside the volute chamber to separate two chambers that are substantially nested about the turbine wheel.

2. The housing of claim 1, wherein the manifold section is coupled to a cylinder head housing the cylinders.

3. The housing of claim 1, wherein the circumferential septum separates a first chamber from a second chamber in the volute chamber, wherein the first chamber is radially inside the second chamber.

4. The housing of claim 3, wherein the first chamber is in fluid communication with a first group of cylinders and the second chamber is in fluid communication with a second group of cylinders.

5. The housing of claim 3, wherein the circumferential septum is configured to prevent radial fluid communication between the first and second chambers for at least a portion of the volute chamber.

6. The housing of claim 3, wherein at least a portion of the second chamber is defined by an outer wall of the volute chamber and the circumferential septum.

7. The housing of claim 1, wherein the housing is configured for use with a twin scroll turbocharger.

8. The housing of claim 1, wherein the two chambers are substantially concentric about the turbine axis.

9. A housing for an internal combustion engine, the housing comprising:

a manifold section configured to receive an exhaust gas flow from cylinders of the internal combustion engine;

a turbine section, wherein the turbine section and the manifold section comprise a single member;

a volute chamber within the turbine section configured to direct the exhaust gas flow to a turbine wheel disposed about a turbine axis; and

a septum positioned inside the volute chamber to form a first chamber in fluid communication with the turbine wheel and a first group of cylinders and a second chamber in fluid communication with the turbine wheel and a second group of cylinders.

10. The housing of claim 9, wherein the manifold section is coupled to a cylinder head housing the cylinders.

11. The housing of claim 9, wherein the septum comprises a substantially radial septum with respect to the turbine axis.

12. The housing of claim 9, wherein the first and second chambers are nested about the turbine wheel and the septum comprises a substantially circumferential septum with respect to the turbine axis.

13. The housing of claim 12, wherein the circumferential septum is configured to prevent fluid communication between the first and second chambers for at least a portion of the volute chamber.

14. The housing of claim 9, wherein the housing is configured for use with a twin scroll turbocharger.

15. An internal combustion engine, comprising:

a plurality of cylinders in a cylinder head;

a first portion of a turbine housing coupled to the cylinder head and in fluid communication with the plurality of cylinders;

a second portion of the turbine housing comprising a volute chamber housing a turbine wheel disposed about a turbine axis; and

a septum positioned inside the volute chamber to form a first chamber and second chamber, wherein the first chamber is in fluid communication with the turbine wheel and a first group of cylinders and the second chamber is in fluid communication with the turbine wheel and a second group of cylinders.

16. The internal combustion engine of claim 15, wherein the septum comprises a substantially radial septum with respect to the turbine axis.

17. The internal combustion engine of claim 16, wherein the first and second chambers are in fluid communication with the turbine wheel via axially adjacent circumferential passages on each side of the radial septum.

18. The internal combustion engine of claim 15, wherein the first and second chambers are nested about the turbine wheel and the septum comprises a substantially circumferential septum with respect to the turbine axis.

19. The internal combustion engine of claim 18, wherein the circumferential septum is configured to prevent radial fluid communication between the first and second chambers for at least a portion of the volute chamber.

20. The internal combustion engine of claim 15, wherein the turbine housing is configured for use with a twin scroll turbocharger.