Turbocharger with enhanced compressor bleed capability
AssigneeCaterpillar Inc.
InventorJohn R. Gladden
Life of this patent
Estimating the term…
Abstract
A turbocharger for an internal combustion engine, particularly suitable for use in a work machine, is provided with a turbine having a low pressure region of minimum static pressure. A compressor has a high pressure region of maximum dynamic pressure. A conduit fluidly interconnects the high pressure region with the low pressure region. A valve is associated with the conduit for opening and closing the conduit. Compressed air or a fuel/air mixture may be bled from the compressor to the turbine over a wider arrange of operating conditions, even at low load operating conditions.
Claims18
A turbocharger for an internal combustion engine, comprising:
- a turbine including a turbine volute section having a low pressure region of minimum static pressure;
- a compressor including a compressor volute section having a high pressure region of maximum static pressure;
- a conduit fluidly interconnected to said high pressure region of said compressor volute section and to said low pressure region of said turbine volute section;
- and
- a valve associated with said conduit for opening and closing said conduit.
An internal combustion engine, comprising:
- an exhaust manifold;
- an inlet manifold;
- a turbine fluidly coupled with said exhaust manifold and including a turbine volute section having a low pressure region of minimum static pressure;
- and
- a compressor fluidly coupled with said inlet manifold and including a compressor volute section having a high pressure region of maximum total pressure;
- a conduit fluidly interconnecting said high pressure region of said compressor volute section to said low pressure region of said turbine volute section;
- and
- a valve associated with said conduit for opening and closing said conduit.
A method of operating a turbocharger in an internal combustion engine, comprising:
- providing a turbine coupled with a compressor;
- driving said turbine with exhaust gas from an exhaust manifold of the internal combustion engine;
- rotatably driving said compressor with said turbine;
- transporting combustion air through a high pressure region of maximum total pressure within a volute section of said compressor;
- transporting exhaust gas through a low pressure region of minimum static pressure within a volute section of said turbine;
- fluidly interconnecting a conduit between said high pressure region of said compressor volute section and said low pressure region of said turbine volute section;
- and
- operating a valve associated with said conduit to selectively open and close said conduit.
Dependencies are inferred from the claim text.