公开(公告)号：US20180038320A1

公开(公告)日：2018-02-08

申请号：US15229741

申请日：2016-08-05

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Jon J. Waples ,  Timothy J. Spry ,  Marvin H. Miller ,  Jason M. Andrzejewski

IPC: F02M25/08 ,  B60K15/035 ,  F16K15/02

CPC classification number: F02M25/089 ,  B60K15/03504 ,  B60K15/03519 ,  B60K2015/03256 ,  B60K2015/03514 ,  F02M25/0836 ,  F02M25/0854 ,  F02M25/0872 ,  F16K15/026

Abstract: Disclosed herein are liquid containment systems, methods for making such systems, and vehicle fuel storage systems having vapor recirculation capabilities. Presented is a liquid containment system for stowing hydrocarbon-based liquids. This system includes a vapor canister coupled to a liquid container to receive hydrocarbon vapor from the container. A fill conduit coupled to the container has an opening for receiving a fill nozzle. A vapor recirculation transmits vapor from the container to the fill conduit. A multi-stage check valve, which is coupled to the container and recirculation conduit, has a housing and a plunger with a bleed hole. The plunger seats against the housing such that vapor passes from the container through the bleed hole to the fill conduit via the recirculation conduit. Responsive to increased in-tank pressure, the plunger unseats from the housing such that vapor passes through the bleed hole and around the plunger to the fill conduit.