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US 2022/0162978 A1Published application
Exhaust manifold having turbine connector with turbine foot
AssigneeCaterpillar Inc.
InventorsMatthew Wolk, Thomas Lee Atwell, Vikas Bhupendra Sheth, Jeremy Ross Conyers
Life of this patent
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Abstract
A turbine connector in an engine exhaust manifold includes a turbine foot attached to incoming exhaust conduits. The turbine foot has an outer perimetric edge defining a trapezoidal shape, and inner perimetric edges forming exhaust outlets from the incoming exhaust conduits. The inner perimetric edges have varied perimetric curvatures largest in finite curvature size upon a web extending between the exhaust outlets, and together forming an hourglass web profile in a turbine-mounting plane defined by the turbine foot.
Claims20
A turbine connector for an engine exhaust manifold comprising:
- a first incoming exhaust conduit;
- a second incoming exhaust conduit;
- a turbine foot attached to the first incoming exhaust conduit and to the second incoming exhaust conduit, and having an engine-facing side, and a turbine-mounting side opposite to the engine-facing side and including a land defining a turbine-mounting plane;
- the turbine foot further including an outer edge having a long perimetric base, a short perimetric base, and a first perimetric leg and a second perimetric leg each extending angularly between the long perimetric base and the short perimetric base, wherein the long perimetric base, the short perimetric base, the first perimetric leg, and the second perimetric leg, together define a trapezoidal shape;
- the turbine foot further including a first inner edge forming a first exhaust outlet from the first incoming exhaust conduit opening in the land, a second inner edge forming a second exhaust outlet from the second incoming exhaust conduit opening in the land, and a web extending between the first exhaust outlet and the second exhaust outlet;
- and
- the first inner edge and the second inner edge each having a varied perimetric curvature that is largest in finite curvature size upon the web, and together forming an hourglass web profile in the turbine-mounting plane.
4 more elements
(canceled)
An engine exhaust manifold comprising:
- a first exhaust pipe structured to fluidly connect to a first set of engine cylinders;
- a second exhaust pipe structured to fluidly connect to a second set of engine cylinders;
- a turbine connector coupled to the first exhaust pipe and to the second exhaust pipe, and including a turbine foot;
- the turbine foot having an outer perimetric edge defining a trapezoidal shape, a first inner perimetric edge, and a second inner perimetric edge;
- the first inner perimetric edge forming a first exhaust outlet for feeding exhaust from the first set of engine cylinders to a turbine, and the second inner perimetric edge forming a second exhaust outlet for feeding exhaust from the second set of engine cylinders to the turbine;
- the turbine foot further including a web extending between the first exhaust outlet and the second exhaust outlet;
- and
- the first exhaust outlet and the second exhaust outlet are mirror images of one another, and each has a varied inside curvature that is largest in finite curvature size upon the web.
5 more elements
A turbine connector for an engine exhaust manifold comprising:
- a first incoming exhaust conduit;
- a second incoming exhaust conduit;
- a turbine foot attached to the first incoming exhaust conduit and to the second incoming exhaust conduit, and having an engine-facing side, and a turbine-mounting side opposite to the engine-facing side and including a land defining a turbine-mounting plane;
- the turbine foot further including an outer edge defining a trapezoidal shape, and including therein a plurality of bolt holes extending between the engine-facing side and the turbine-mounting side and arranged in a trapezoidal pattern congruent with the trapezoidal shape;
- the turbine foot further including a first inner edge forming a first exhaust outlet from the first incoming exhaust conduit opening in the land, a second inner edge forming a second exhaust outlet from the second incoming exhaust conduit opening in the land, and a web extending between the first exhaust outlet and the second exhaust outlet;
- and
- the first inner edge and the second inner edge each having a varied perimetric curvature and together forming an hourglass web profile in the turbine-mounting plane.
4 more elements
Dependencies are inferred from the claim text.