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：US20250125386A1

公开(公告)日：2025-04-17

申请号：US18486224

申请日：2023-10-13

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Glenn W. Skala ,  Devesh Pande ,  Timothy J. Howitt ,  Joseph Hahn

IPC: H01M8/04089 ,  H01M8/04082

Abstract: An injector/ejector assembly for a fuel cell. The assembly includes a body portion that extends along a central longitudinal axis. Recirculation flow passages are formed by and extend through the body portion. Each of the recirculation flow passages extend from a corresponding recirculation flow inlet to a corresponding recirculation flow outlet. A motive flow passage is formed by and extends through the body portion and reeds enclose at least a portion of the corresponding recirculation flow outlet for each of the recirculation flow passages.

公开(公告)号：US11713734B1

公开(公告)日：2023-08-01

申请号：US18162812

申请日：2023-02-01

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Jie Kou ,  Joseph Hahn ,  Christopher L. Koppen ,  Steven D. Burch ,  Kenneth Kurzawa

IPC: F02M21/02 ,  F02M21/06

CPC classification number: F02M21/0206 ,  F02M21/0227 ,  F02M21/0245 ,  F02M21/06

Abstract: A multi-function fuel delivery system and method of providing fuel delivery is provided that addresses space-related and cost related challenges as well as other challenges by combining a noise attenuating function, a hydrogen heating function, and a fuel supply rail capable of supplying hydrogen to multiple injectors within a single volume where a heat-transfer core utilizes an existing available internal volume of an attenuating volume or a fuel rail of a hydrogen supply manifold. A hydrogen fuel manifold, a hydrogen heat exchanger, and a fuel rail are housed in a single chamber such that a hydrogen fuel heating/cooling function, a hydrogen fuel noise/vibration attenuating function, providing the heat to the heat-transfer core, and providing the noise-attenuated H2 are performed in the single chamber.

公开(公告)号：US20240258543A1

公开(公告)日：2024-08-01

申请号：US18162797

申请日：2023-02-01

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Joseph Hahn ,  Scott May

IPC: H01M8/04746 ,  H01M8/04701

CPC classification number: H01M8/04753 ,  H01M8/04708

Abstract: A multi-function fuel delivery system, a method of providing fuel delivery and a noise-attenuating and fuel injector housing device address a root cause of audible noise in a fuel delivery system by placing a sufficiently sized volume directly at the inlet of pulsed-type hydrogen injectors, thereby eliminating pressure pulsation and audible noise created by pressure pulsations. By combining a noise-attenuating function and a fuel supply rail capable of supplying hydrogen to multiple injectors with both performed within a single volume addresses space-related and cost-related challenges as well as other challenges of the fuel delivery system.