IN-TANK FUEL FILTER IMPROVED TO RESIST ELECTRIFICATION

摘要

A filter comprising a fuel pump for feeding fuel from a tank and a fuel filter unit for removing foreign matters from the fuel fed from the tank by the fuel pump, the pump and the filter unit being integrated. Particularly a filter to be installed within a tank, the filter being improved not to allow the electric charge accumulated in it to become great enough to accelerate the deterioration of the resin constituting the surface of the filter. In one mode, the filter includes a generally cylindrical filter member fitted around the circumference of a generally columnar pump, and a cover covering the filter member and comprising an electrically nonconductive member. Fuel is made to flow through the filter in the radial direction to remove foreign matters. A filter member of this type can keep the level of electrification low. The filter member covered with an electrically nonconductive cover is disposed in the tank. Corona discharge may take place from the surface of the cover when the cover becomes exposed out of the remaining fuel in the tank and the charge increases to a problematic extent. For this reason, the electric charge of the cover surface can be prevented from increasing great enough to accelerate deterioration of the resin. <IMAGE>