Denso Corporation

Masashi Miyamoto

Kiyoshi Nagata

Kouji Izutani

Kiyotoshi Oi

Toshihiko Muramatsu

Yukio Inuzuka

Ryoichi Honbo

A motor includes a rotor, a commutator, a brush, and a bias member. The commutator has a rectifying surface. The commutator rectifies an electric current supplied to the rotor through the rectifying surface. The rotor is rotated by being supplied with the electric current. The brush makes contact with the commutator via the rectifying surface. The rotor is supplied with the electric current through the brush. The brush starts making contact with the commutator on an entry side of the brush as the rotor and the commutator rotate with respect to the brush along a rotative direction and the commutator intermittently makes contact with the brush. The bias member biases the brush toward the entry side.

Commutator motor with brush biased toward initial contact side

A fuel pump of returnless type fuel supply system for a vehicle includes a pump case, an impeller disposed in the pump case and a pump passage connected between the fuel inlet port and fuel discharge port. The pump passage is composed of a guiding passage section connected to the fuel inlet and pressure section connected between the guiding section and the fuel discharge port, and the guiding section has a first vapor discharge port disposed near the fuel inlet port and a second vapor discharge port disposed near the pressure passage section. Thus, fuel vapor is discharged from the first and second vapor discharge ports along with a small amount of the fuel returning to the fuel tank.

Fuel pump for vehicle

A fuel pump for pumping fuel is provided in a sub-tank suspended in a fuel tank in order to reserve a fuel volume necessary for the fuel pump to be started on an inlet side of the fuel pump in the fuel tank. A fuel level holding member formed so as to rise upward on a suction opening side of the fuel pump reserves the fuel in space of the risen part. Thus, a structure for reserving the fuel volume pumped by the fuel pump in the fuel tank can be obtained with a simple construction.

Growing community of inventors

Nishio, Japan

Masashi Miyamoto