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US 10,330,053 B2Granted
Pulse separated direct inlet axial automotive turbine
AssigneeFord Global Technologies, LLC
InventorsRobert Andrew Wade, John Christopher Riegger
Life of this patent
Estimating the term…
Abstract
Systems and methods for operating a turbocharged engine are described. In one example, a system comprises a cylinder head having a first and second exhaust duct separately coupled to first and second groups of cylinders, each of the first and second exhaust ducts leading to an exhaust driven turbine mounted inside the cylinder head on a bearing, the bearing located within a bearing housing supported by the cylinder head. In this way, exhaust pulses remain separate up to the turbine mounted inside the cylinder head.
Claims21
A system, comprising:
- a cylinder head for a first group of outer cylinders and a second group of inner cylinders, the system including the cylinders, where each cylinder of the first group of outer cylinders and the second group of inner cylinders is coupled to one exhaust duct within the cylinder head, exhaust ducts coupled to the first group of cylinders merging only into a fluidically combined first exhaust output duct and exhaust ducts coupled to the second group of cylinders merging only into a fluidically combined second exhaust output duct, the first and second exhaust output ducts leading to first and second inlet ports with arc-shaped outlets and a circular shaped space formed between the arc-shaped outlets, respectively, of an exhaust driven turbine mounted inside the cylinder head on a bearing within a bearing housing supported by the cylinder head.
A turbocharged engine, comprising:
- a cylinder head forming two or more exhaust output ducts, each with an outlet terminus located at a turbine wheel or collector, an opening of a first outlet terminus of a first exhaust output duct being a semi-circular annular shape within 5° of a half-circle positioned above an opening of a second outlet terminus of a second exhaust output duct being a semi-circular annular shape within 5° of a half-circle, the first and second outlet termini positioned opposite and spaced apart from one another to form a circular annulus, each outlet terminus of the first and second outlet termini coupled to a separate turbine inlet port of a first turbine inlet port and a second turbine inlet port, the first and second turbine inlet ports each being arc-shaped and positioned to collectively form an annular shape within 10° of a circle, wherein exhaust ducts from outside cylinders on each side of the cylinder head fluidically merge to form the second exhaust output duct and exhaust ducts from inside cylinders between the outside cylinders pass to above the exhaust ducts from outside cylinders and fluidically merge to form the first exhaust output duct.
A method, comprising:
- fluidically combining, in a cylinder head, exhaust gas from inner inline cylinders of an engine only to a first semi-circular annular exit;
- directing, in the cylinder head, exhaust gas from outer inline cylinders of the engine into exhaust ducts such that the exhaust gas initially travels towards an upper face of the cylinder head;
- fluidically combining, in the cylinder head, exhaust gas from the outer inline cylinders of the engine only to a second semi-circular annular exit positioned opposite the first semi-circular annular exit such that the exhaust gas travels towards a lower face of the cylinder head in order to reach the second semi-circular annular exit, the second semi-circular annular exit below the first semi-circular annular exit, the opposing first and second semi-circular exits positioned between the inner cylinders along a central axis of the cylinder head;
- and
- directing exhaust gas out of the first and second exits through first and second inlet ports, respectively, of an axial turbine with bearings mounted in a side wall of the cylinder head.
2 more elements
Dependencies are inferred from the claim text.