Fuel filtration device

摘要

A fuel filtration device is configured in such a manner that a filter assembly having first filtration layers is provided in a fuel flow path which leads from the inside of a fuel tank through a fuel pump to a fuel consumption means and also in such a manner that, in second filtration layers which form at least some of the first filtration layers, the finest filtration layer is disposed at the downstream-most position. An aggregation promotion section (24A) for promoting the aggregation of dust in fuel by changing the direction or the speed of flow of the fuel is provided to the filter assembly (20A) so that the aggregation of the dust in the fuel is promoted on the upstream side of at least the filtration layer (22A) which is the second finest filtration layer among the second filtration layers (21A, 22A, 23A). The configuration improves the durability of the fuel filtration device.