Fuel feed apparatus having sub tank and jet pump
AssigneeDenso Corporation
InventorKiyoshi Nagata
Life of this patent
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Abstract
A fuel feed apparatus including a sub-tank is received in a fuel tank having multiple tank sections. Multiple jet pumps respectively transfers fuel received in the tank sections into the sub-tank. Therefore, even if a fuel amount received in a single tank section decreases, fuel can be steadily supplied from another tank section. Intermediately pressurized fuel in a fuel pump is supplied to the jet pumps, so that fuel can be steadily supplied to the jet pumps regardless of fuel consumption amount in an engine. Fuel is drawn from an upstream side of a pressure regulator, and supplied to the jet pump. The pressure regulator has an urging unit, and controls fuel pressure without using a diaphragm. Therefore, the pressure regulator is simplified and downsized.
Claims7
A fuel feed apparatus received in a first-tank section included in a fuel tank having a plurality of tank sections, the fuel feed apparatus supplying fuel received in the fuel tank to outside of the fuel tank and comprising:
- a sub-tank received in the first-tank section;
- a pump module received in the sub-tank for drawing fuel received in the sub-tank and pressurizing the fuel;
- a first jet pump arranged in the first-tank section for generating suction power by jetting fuel for supplying fuel received in the first-tank section into the sub-tank;
- and a second jet pump arranged in the sub-tank for generating suction power by jetting fuel for supplying fuel received in a second-tank section included in the fuel tank into the sub-tank.
Dependencies are inferred from the claim text.