US 11,780,323 B1
Fuel tank venting system with liquid collection and active purging
Jason M. Andrzejewski, Washington, MI (US); Timothy E. McCarthy, Grand Blanc, MI (US); Marvin H. Miller, Flushing, MI (US); and Clifford A. Lyons, Southfield, MI (US)
Assigned to GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US)
Filed by GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US)
Filed on Jun. 7, 2022, as Appl. No. 17/834,313.
Int. Cl. B60K 15/00 (2006.01); B60K 15/035 (2006.01)
CPC B60K 15/03519 (2013.01) [B60K 15/03504 (2013.01); B60K 2015/03514 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A fuel tank system, comprising:
a fuel tank;
a fuel pump assembly arranged in the fuel tank and including a fuel pump and a vacuum source; and
a fuel tank venting system including:
a first vent valve arranged in the fuel tank;
a storage vessel arranged in the fuel tank and in fluid communication with the first vent valve;
a first fluid line arranged in the fuel tank connecting the storage vessel to the vacuum source of the fuel pump assembly; and
a second fluid line connecting the storage vessel to an evaporative emission system,
wherein the fuel tank system further comprises a fuel filter connected between the storage vessel and the vacuum source.