Exhaust Pulse Energy Divider

• US 20130167527A1
• Filed: 02/24/2011
• Published: 07/04/2013
• Est. Priority Date: 02/26/2010
• Status: Active Grant

• Current Assignee: James P. Burke, John Zagone, Luis Carlos Cattani, Michael D. Bartkowicz, Paul Gottemoller
• Original Assignee: James P. Burke, John Zagone, Luis Carlos Cattani, Michael D. Bartkowicz, Paul Gottemoller
• Inventors: Zagone, John, Gottemoller, Paul, Burke, James P., Bartkowicz, Michael D., Cattani, Luis Carlos
• Granted Patent: US 9,206,732 B2
• Time in Patent Office: Days
• US Class Current: 60/602
• CPC Class Codes: F01D 17/105 by passing part of the fluid
• CPC Class Codes: F01D 9/026 Scrolls for radial machines or engines
• CPC Class Codes: F02B 27/04 in exhaust systems only, e.g. for sucking-off combustion gases
• CPC Class Codes: F02B 37/18 by bypassing exhaust from the inlet to the outlet of turbine or to the atmosphere
• CPC Class Codes: F02B 37/183 Arrangements of bypass valves or actuators therefor
• CPC Class Codes: F05D 2220/40 in turbochargers
• CPC Class Codes: F05D 2240/12 Fluid guiding means, e.g. vanes
• CPC Class Codes: Y10T 137/0536 Highspeed fluid intake means [e.g., jet engine intake]

Abstract

An exhaust gas turbocharger housing (10) for an engine includes a main turbine housing portion (14) and a throat portion (12) defining an exhaust gas passageway (20) that is in upstream fluid communication with the main turbine housing. The exhaust passageway (20) communicates exhaust gases (EG) to the main turbine housing portion (14). A flow divider (22) generally bisects the exhaust gas passageway (20) forming a first inlet passageway (24A) and a second inlet passageway (24B). A flow hole (26) is disposed through the flow divider (22) for permitting the fluid communication of exhaust gas (EG) from the first inlet passageway (24A) to the second inlet passageway (24B).

Claims

1. An exhaust gas turbocharger housing for an engine, comprising:

a main turbine housing portion;

a throat portion defining an exhaust gas passageway in upstream fluid communication with the main turbine housing for communicating exhaust gases to the main turbine housing portion;

a flow divider generally bisecting the exhaust gas passageway forming a first inlet passageway and a second inlet passageway; and

a flow hole through the flow divider for permitting the fluid communication of exhaust gas from the first inlet passageway to the second inlet passageway.

2. The housing of claim 1 further comprising an inlet surface of the throat portion that is generally transverse to the exhaust gas passageway.

3. The housing of claim 2 wherein the flow divider is generally flush with the inlet surface.

4. The housing of claim 2 wherein the flow divider has a length extending from the inlet surface to the main turbine housing portion.

5. The housing of claim 1 further comprising a wastegate port disposed through the throat portion.

6. The housing of claim 5 wherein the flow hole is disposed along the length of the flow divider and generally on center with the location of the wastegate port.

7. The housing of claim 1 wherein the flow hole is disposed generally centrally along a length of the flow divider.

8. A method of wasting exhaust gas in a throat portion of a turbocharger turbine housing, the throat portion defining a exhaust gas passageway for the fluid communication of exhaust gas from an engine to a main turbine housing portion, the method comprising the steps of:

providing a wastegate port in the throat portion;

dividing the exhaust gas passageway into a first inlet passageway and a second inlet passageway with a flow divider having a flow opening permitting the fluid communication between the two inlet passageways;

opening the wastegate port disposed in one of the first inlet passageway and the second inlet passageway; and

wasting exhaust gas from both the first inlet passageway and the second inlet passageway, wherein at least a portion of the exhaust gas flows through the flow opening to the wastegate port.

9. The method of claim 8 further comprising bisecting the throat portion with the flow divider.

10. The method of claim 8 further comprising providing a single wastegate port on the throat portion.

11. The method of claim 8 further comprising locating a single wastegate port on the first inlet passageway, and wasting exhaust gas from the second inlet passageway through the flow opening to the first inlet passageway and out the wastegate port.

12. The method of claim 8 further comprising the step of generally aligning the flow opening and the wastegate port along the length of the flow divider.

13. The method of claim 8 further comprising extending the flow divider from an inlet surface of the throat portion, wherein the inlet surface is generally transverse to the exhaust passageway.

14. The method of claim 8 further comprising extending the flow divider to the main turbine housing portion.

15. An exhaust gas turbocharger housing for an engine, comprising:

a main turbine housing portion;

a throat portion defining an exhaust gas passageway in upstream fluid communication with the main turbine housing for communicating exhaust gases to the main turbine housing portion;

a wastegate port disposed on the throat portion and in fluid communication with the exhaust gas passageway;

at least one flow divider dividing the exhaust gas passageway into a plurality of inlet passageways; and

at least one flow hole disposed through the at least one flow divider for permitting the fluid communication of exhaust gas between the plurality of inlet pas sageways.

16. The housing of claim 15 further comprising an inlet surface of the throat portion that is generally transverse to the exhaust gas passageway

17. The housing of claim 16 wherein the flow divider is generally flush with the inlet surface.

18. The housing of claim 16 wherein the flow divider has a length extending from the inlet surface to the main turbine housing portion.

19. The housing of claim 15 wherein the flow hole is disposed along the length of the flow divider and generally aligned with the wastegate port.

20. The housing of claim 15 wherein the flow hole is disposed generally centrally along a length of the flow divider.