公开(公告)号：US20240421331A1

公开(公告)日：2024-12-19

申请号：US18334633

申请日：2023-06-14

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Joseph Hahn ,  Patrick J. Eding

IPC: H01M8/04746 ,  B33Y10/00 ,  H01M8/04014 ,  H01M8/04082 ,  H01M8/04089 ,  H01M8/04992

Abstract: Aspects of integrated hydrogen fuel cell injection units herein use additive manufacturing to form a single part. A space between a body and an ejector nozzle/venturi tube system forms an attenuation volume. The heat exchanger is integrated within the attenuation volume, saving space. The ejector nozzle/venturi tube, and the stack anode inlet to the fuel cell, are arranged through the heat exchanger and allow an injector at the base of the body to selectively emit hydrogen into the anode of the fuel cell. This architecture obviates the need for many O-rings and bolts used in present fuel injection systems using existing manufacturing techniques that may be unduly large and unwieldy and that may cause hydrogen leakage at different connection points.

公开(公告)号：US20250108436A1

公开(公告)日：2025-04-03

申请号：US18476717

申请日：2023-09-28

Applicant: GM Global Technology Operations LLC

Inventor： Andrew Thomas Cunningham ,  Ante Tony Lausic ,  Adam Golembeski ,  Patrick J. Eding

IPC: B22F10/73 ,  B22F10/68 ,  B33Y40/20

Abstract: A method for capturing trapped powder from a part during an additive manufacturing process, the method comprising defining parameters for a part, the part defining an interior passageway defined by interior sidewalls, defining parameters for a powder removal cap, the powder removal cap comprising a body portion and a thin radial membrane connected to the interior sidewalls of the part, simultaneously creating the part and the powder removal cap via additive manufacturing, wherein the powder removal cap is created within the interior passageway and, upon completion of the creation of the part and the powder removal cap, the powder removal cap traps excess powder within the interior passageway, removing the powder removal cap from the interior passageway by breaking the radial membrane from the interior sidewalls to permit access to the interior passageway, and capturing the excess powder within the interior passageway.

公开(公告)号：US20250100224A1

公开(公告)日：2025-03-27

申请号：US18474652

申请日：2023-09-26

Applicant: GM Global Technology Operations LLC

Inventor： Adam McFarland ,  Adam John Campbell ,  Steven Lewis Corzyk ,  Patrick J. Eding ,  Dale Miller

IPC: B29C64/35 ,  B29C64/141 ,  B29C64/386 ,  B33Y10/00 ,  B33Y40/20 ,  B33Y50/00

Abstract: A method for removing excess powder from a part for a vehicle during an additive manufacturing process, comprises defining parameters for a part, defining parameters for a removal tool comprising a plurality of links to create a chain-like structure, simultaneously creating the part and the removal tool via additive manufacturing, wherein the part defines an interior passageway and the removal tool is created within the interior passageway and, upon completion of the creation of the part and the removal tool, the removal tool is surrounded by excess powder in the interior passageway, and wherein each link of the plurality of links are created with a gap between adjacent links of the plurality of links, and removing the removal tool from the interior passageway, forcing at least some of the excess powder out of the interior passageway.