公开(公告)号：US20220162978A1

公开(公告)日：2022-05-26

申请号：US17100006

申请日：2020-11-20

Applicant: Caterpillar Inc.

Inventor： Matthew Wolk ,  Thomas Lee Atwell ,  Vikas Bhupendra Sheth ,  Jeremy Ross Conyers

IPC: F01N13/10

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.

公开(公告)号：US12234781B1

公开(公告)日：2025-02-25

申请号：US18633622

申请日：2024-04-12

Applicant: Caterpillar Inc.

Inventor： Matthew Wolk ,  Michael D. Roley ,  John R. McDonald ,  Ry C. Colwell ,  Quinton Burcar

IPC: F02D13/04 ,  F02D13/02 ,  F02D41/00

Abstract: Operating an engine includes opening and closing exhaust valves in an engine braking timing pattern, charging a first cylinder with air fed directly from an intake manifold, and releasing the directly fed air in a first braking event. Operating the engine further includes charging the first cylinder with air fed via a flow-through path through a second cylinder operating as an air conduit, and releasing the air fed through the flow-through path and pressurized to brake the engine in a second braking event. Related apparatus and valve lift profiles are also disclosed.

公开(公告)号：US11988126B2

公开(公告)日：2024-05-21

申请号：US18247180

申请日：2021-10-19

Applicant: Caterpillar Inc.

Inventor： Matthew Wolk ,  Thomas L Atwell ,  Vikas Bhupendra Sheth ,  Jeremy Ross Conyers

IPC: F01N13/10 ,  F02B37/02 ,  F02B67/10

CPC classification number: F01N13/105 ,  F02B37/02 ,  F02B37/025 ,  F02B67/10 ,  F01N2260/10 ,  F01N2340/06 ,  F05D2220/40 ,  F05D2240/91

Abstract: A turbine connector (40) in an engine exhaust manifold (30) includes a turbine foot (54) attached to incoming exhaust conduits (42,46). The turbine foot (54) has an outer perimetric edge (72) defining a trapezoidal shape, and inner perimetric edges (86,90) forming exhaust outlets (88,92) from the incoming exhaust conduits (42,46). The inner perimetric edges (86,90) have varied perimetric curvatures largest in finite curvature size upon a web (94) extending between the exhaust outlets (88,92), and together forming an hourglass web profile in a turbine-mounting plane defined by the turbine foot (54).

公开(公告)号：US20230374928A1

公开(公告)日：2023-11-23

申请号：US18247180

申请日：2021-10-19

Applicant: Caterpillar Inc.

Inventor： Matthew Wolk ,  Thomas L Atwell ,  Vikas Bhupendra Sheth ,  Jeremy Ross Conyers

IPC: F01N13/10 ,  F02B37/02 ,  F02B67/10

CPC classification number: F01N13/105 ,  F02B37/025 ,  F02B67/10 ,  F01N2260/10 ,  F01N2340/06 ,  F05D2220/40

Abstract: A turbine connector (40) in an engine exhaust manifold (30) includes a turbine foot (54) attached to incoming exhaust conduits (42,46). The turbine foot (54) has an outer perimetric edge (72) defining a trapezoidal shape, and inner perimetric edges (86,90) forming exhaust outlets (88,92) from the incoming exhaust conduits (42,46). The inner perimetric edges (86,90) have varied perimetric curvatures largest in finite curvature size upon a web (94) extending between the exhaust outlets (88,92), and together forming an hourglass web profile in a turbine-mounting plane defined by the turbine foot (54).

公开(公告)号：US11473481B2

公开(公告)日：2022-10-18

申请号：US17100006

申请日：2020-11-20

Applicant: Caterpillar Inc.

Inventor： Matthew Wolk ,  Thomas Lee Atwell ,  Vikas Bhupendra Sheth ,  Jeremy Ross Conyers

IPC: F01N13/10 ,  F02B37/02

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.