Oil fuel pump of brushless motor with built-in controller

Abstract

The invention discloses a brushless electrical motor fuel pump with inner controller, which comprises an oil-out end cover, an electrical appliance jack, a shell, a pump member, a brushless electrical motor and a controller, wherein, the pump member comprises a pump body, a pump wheel and a pump cover. The brushless electrical motor comprises a stator, a stator winding member, a rotor member and a hall sensor, wherein, the rotor member axle passes through the pump body and is connected with the pump wheel. The controller is designed into layered structure which has smaller size and can be arranged in the shell. The invention has the advantages that the trinitarian structure of the pump member, the brushless electrical motor and the controller is formed by arranging the controller inside the fuel pump; therefore, the structure has the advantages of compact structure, and the shape size of the invention is roughly equal to the electromotion fuel pump of the prior brush electrical motor. The new product and the old product are interchangeable and replaceable, thereby enlarging application field of the product. The brushless electrical motor fuel pump can be produced and used in batch.

Description

technical field [0001] The invention relates to an electric fuel pump for delivering pressurized fuel to an injection system of an internal combustion engine, in particular to a brushless motor fuel pump with a built-in controller. Background technique [0002] At present, commonly used electric fuel pumps include motors, pump parts, casings, oil outlet covers, electrical sockets, etc., and the motors are generally brushed motors, and there are also brushless motors. The prior art that is closer to the present invention has a patent number It is ZL02221711.8, an invention patent named "An Automobile Electric Fuel Pump Using a Brushless Motor", which discloses the following technical solutions: including end cover part I, casing, stator and winding, pump body parts, pump wheel , End cover part II and Hall sensor, its invention point is: Hall sensor is placed in the middle of stator and winding, the shaft of the rotor part that rare earth permanent magnet is installed passes t...

AI Technical Summary

Problems solved by technology

Its electronic switch circuit as a control mechanism is placed outside the electric fuel pump, which has the disadvantages of large volume and poor interchangeability when replacing the brushed motor fuel pump. In addition, this patent has nothing to do with the stator structure, which is one of the key technologies of small brushless motors. For further description and disclosure, resulting in poor practicality (manufacturability)

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