Mitsubishi Denki Kabushiki Kaisha

Tetsuo Okashiro

Shingo Iwai

Ryozo Suzuki

Jun Shiraga

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

In an in-tank type motor-driven pump actuated by feeding a power from the outside of a pump casing through an external conductor, an end of the external conductor is extended inside the pump through a through hole formed in an upper motor cover; the external conductor is held in the through hole by a supporting member, and the end of the conductor is directly or indirectly connected to a brush for the motor.

In-tank type motor-driven pump

An electric fuel pump is provided with an insulative holding member 20 for holding choke coils 16 and connecting portions 23 between the choke coils and lead wires (14) as well as between the choke coils and brushes 10, to be mounted in the interior of a pump frame 1. In this electric fuel pump, the insulative holding member 20 holds and fixes the choke coils 16 and the connecting portions around the same, thereby to protect the choke coils 16 and the nearby connecting portions against vibration and shocks applied to the fuel pump. The holding member 20 also insulates conductive parts so that the same are not in contact with a housing 1 of magnetic material or the like, thereby to improve insulativity.

Electric fuel pump

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

Tetsuo Okashiro