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：US20240266562A1

公开(公告)日：2024-08-08

申请号：US18166070

申请日：2023-02-08

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Erin Farbar ,  Devesh Pande ,  Timothy J. Howitt ,  Dean Kostadinovski ,  Ronald Miller

IPC: H01M8/04119 ,  H01M8/04746 ,  H01M8/04858

CPC classification number: H01M8/04119 ,  H01M8/04753 ,  H01M8/0494

Abstract: A fuel cell system arranged to supply electric power to an actuator via an electric power circuit includes an anode and a cathode. A hydrogen delivery system is arranged to supply pressurized hydrogen to the anode, and has a jet pump including an injector nozzle and an ejector. The jet pump channels pressurized hydrogen from a hydrogen tank to the fuel cell. The ejector includes a venturi tube, a mixing chamber, and a secondary flow element, wherein the secondary flow element includes a first duct and a bypass duct. The venturi tube has a first fluidic inlet that is proximal to the injector nozzle, and a second fluidic inlet that is downstream from the injector nozzle of the venturi tube. The first duct is fluidly coupled to the first fluidic inlet, and the bypass duct is fluidly coupled to the second fluidic inlet of the venturi tube.