Housing for an internal combustion engine

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.

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.