Fuel supply device

A fuel supply device configured to be disposed in a middle of a fuel supply path extending from a fuel tank to an engine, the fuel supply device comprising:

• a housing including a housing body forming a fuel storage tank, which also serves as a reservoir tank, and a lid covering and airtightly sealing an opening of the housing body;
• a fuel pump that pressure-feeds stored fuel, the fuel pump disposed inside the housing;
• a regulator disposed inside the housing, the regulator configured to return excess fuel to the fuel storage tank while adjusting the fuel to be pressure-fed so as to have a predetermined pressure;
• and
• a fuel storage amount adjusting unit disposed inside the housing, the fuel storage amount adjusting unit configured to maintain an oil surface of the fuel stored in the fuel storage tank at a constant level, and feed fuel at a second predetermined pressure from a fuel eject pipe disposed in the lid to supply the fuel to the engine;
• wherein the lid has an excess fuel discharge path through which the excess fuel flowing down from the regulator held inside the lid is fed to an inner wall side of the housing body;
• wherein the housing body has an upward fuel receiving surface that receives the excess fuel discharged at a lower position on an end side of the excess fuel discharge path;
• and
• wherein the fuel receiving surface is structured and arranged such that the excess fuel discharged through the excess fuel discharge path is temporarily received by the fuel receiving surface and then returned to the fuel storage tank along an inner wall surface of the housing body.