公开(公告)号：US20250140883A1

公开(公告)日：2025-05-01

申请号：US18494349

申请日：2023-10-25

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Daryl J. D'Andrea ,  Dawid Siekierka ,  Patrick M. Hoover ,  Andrei Balaceanu ,  Lei Li

IPC: H01M8/04746 ,  H01M8/04082 ,  H01M8/0432

Abstract: An exhaust liquid treatment assembly for a fuel cell system (FCS). The FCS includes a fuel cell stack and an FCS exhaust pipe fluidly connected to the fuel cell stack and configured to expel an exhaust stream from the FCS. The exhaust liquid treatment assembly includes a liquid tank having a liquid inlet in fluid communication with the FCS exhaust pipe and a liquid outlet. A liquid treatment filter separates the liquid inlet from the liquid outlet and includes a pH controlling material configured to mix with a liquid passing through the liquid treatment filter. A liquid level sensor configured to determine a level of liquid in the liquid tank. A controller is in communication with the liquid level sensor and configured to regulate a level of the liquid within the liquid tank by selectively opening and closing an outlet valve in fluid communication with the liquid outlet.

公开(公告)号：US10927733B2

公开(公告)日：2021-02-23

申请号：US16433652

申请日：2019-06-06

Applicant: GM Global Technology Operations LLC

Inventor： Rahul Mital ,  Daryl J. D'Andrea ,  Bilal A. Rathur

IPC: F01N3/02 ,  F01N3/20 ,  F01N13/08 ,  F01N3/08

Abstract: A system to mitigate diesel exhaust fluid deposits in vehicle exhaust system flexible couplings includes a diesel exhaust pipeline. A diesel exhaust fluid injector is connected to the diesel exhaust pipeline to inject a diesel exhaust fluid into the diesel exhaust pipeline. A flexible coupling is connected to the diesel exhaust pipeline. A diesel exhaust fluid collection device is positioned in the diesel exhaust pipeline between a connection location into the diesel exhaust pipeline of the diesel exhaust fluid injector and the flexible coupling. The diesel exhaust fluid collection device includes a liquid diesel exhaust fluid collection volume where an un-vaporized portion of the diesel exhaust fluid is collected.

公开(公告)号：US20250079483A1

公开(公告)日：2025-03-06

申请号：US18459635

申请日：2023-09-01

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Dawid Siekierka ,  Daryl J. D'Andrea ,  Patrick M. Hoover ,  Andrei Balaceanu

IPC: H01M8/04119 ,  B60L50/72

Abstract: Presented are liquid-gas (LG) separator assemblies for segregating air and water in fuel cell system (FCS) exhaust streams, methods for making/using such assemblies, and FCS-powered vehicles equipped with such assemblies. An LG separator assembly includes a quick-connect (QC) fitting with a fitting body having a first open end, which couples to an exhaust pipe of the FCS to thereby receive an exhaust stream expelled from the FCS. An LG separator unit has a separator body with opposite open ends, a first of which couples to a second open end of the fitting body to thereby releasably couple to the exhaust pipe and receive therefrom the exhaust stream through the QC fitting. The LG separator unit extracts liquid water entrained within the exhaust stream, ejects the extracted water through a water nozzle located within the separator body, and expels the remaining exhaust stream through a second end of the separator body.