Patent ID: 7827966

Claim:
A fuel supply apparatus comprising: an electric pump suctioning a fuel stored in a fuel tank; a filter disposed downstream of the electric pump, the filter capturing a foreign matter contained in the fuel; a mechanical pump disposed downstream of the filter, the mechanical pump pumping and pressurizing the fuel passed through the filter; a recirculation passage for recirculating an excessive fuel downstream of the mechanical pump into the fuel tank; a branch passage branched from the recirculation passage, the branch passage fluidly connecting the recirculation passage and an upstream passage fluidly connecting the electric pump and the filter; and a control unit controlling an electric power supplied to the electric pump in such a manner as to reduce a fuel flow rate discharged from the electric pump to the filter when a fuel pressure loss in the filter is increased, whereby the fuel recirculating in the recirculating passage is introduced, via the branch passage, into the upstream passage for supply to the filter.