Mitsubishi Denki Kabushiki Kaisha

Jun Shiraga

Shingo Iwai

Ryozo Suzuki

Tetsuo Okashiro

Isamu Sato

Tetuo Okashiro

In a fuel filtering device for a fuel pump (6) which is arranged in a liquid fuel tank (1) of vehicles and feeds the liquid fuel to an engine, a noise diffusing member (16, 17, 18) is provided at a suction opening (15a) of the fuel pump, to diffuse a noise, which is emitted out of the fuel pump, toward predetermined directions except a direction toward the bottom of the fuel tank.

Noise diffusing fuel filter

In a fuel filtering device for a fuel pump (6) which is arranged in a liquid fuel tank (1) of vehicles and feeds the liquid fuel to an engine, there is provided a screen (17, 23) which is for filtering the liquid fuel (2) and is constituted as a bag with a bottom part thereof disposed in contact with or close to an inside wall of the bottom of the fuel tank and covers a suction opening (16) of a suction tube (15) and at least a part of the suction tube (15), the screen (17, 23) being constructed with a dense web which forms a substantially air-tight liquid film by soaking the liquid fuel (2) which makes contact with at least the bottom part of the screen (17, 23) when the screen is partially immersed in the liquid fuel (2).

Fuel filtering device

A fuel supplying pump having a switching circuit provided in the pump closing. The switching circuit stops the pump when an engine stops rotating due, for instance, to a fuel pipe breakage. The circuit having a transistor with a base connected to an oil pressure responsive switch.

Fuel supplying pump

A suction port 22a of an end cover 22 and a suction port 21a of a pump casing 21 are disposed to have a certain angular distance from each other, and the end cover 22 is covered by fuel filtration element 23 with a gap against the bottom of the end cover 22, thereby resistance to fire flame ignited by collector of a pump motor becomes large and dangerous spreading of fire flame is prevented.

An in-tank type fuel pump comprises a pump body having a cylindrical yoke with its one end closed by a cover-out member made of a synthetic resinous material, a motor held in the pump body and an impeller driven by the motor to discharge fuel sucked from an intake port to a discharge port, wherein an elongated portion extending along the inner wall of the cylindrical yoke is formed integrally with the cover-out member and each of first lead wires is extended from the interior of the pump body to the exterior of the same through each through hole formed in the elongated portion, each one end of the first lead wires in the pump body being connected to each of second lead wires connected to brushes.

Growing community of inventors

Fukuyama, Japan

Jun Shiraga