Electric fuel pump

An electric fuel pump, comprising:

• a housing comprising an oil inlet and an oil outlet;
• a pressure booster mounted in said housing, said pressure booster comprising an impeller seat and an impeller, said impeller seat comprising an oil hole, said impeller being rotatably mounted in said impeller seat between said oil inlet of said housing and said oil hole of said impeller seat;
• a stator unit mounted in said housing, said stator unit comprising a starter terminal set, a stator and a packaging adhesive, said stator having one end thereof connected to said starter terminal set, said packaging adhesive encapsulating said starter terminal set and said stator in such a manner that an oil guide passage is created inside said starter terminal set and said stator, said oil guide passage having two opposite ends thereof respectively disposed in communication with said oil outlet of said housing and said oil hole of said impeller seat of said pressure booster;
• and
• a rotor unit mounted in said housing, said rotor unit comprising a rotor, a magnet and a rotating shaft, said rotor being rotatably mounted in said stator, said magnet being set between said stator and said rotor, said rotating shaft being axially extended through said rotor for rotation with said rotor, said rotating shaft having one end thereof rotatably inserted into said stator unit and an opposite end thereof fixedly connected with said impeller of said pressure booster;
• wherein said stator comprises a stator iron core, said stator iron core comprising a plurality of magnetically permeable members equiangularly spaced from one another and a diversion space defined between each two adjacent said magnetically permeable member;
• said starter terminal set comprises a terminal block connected to one end of said stator iron core, said terminal block comprising an axle tube rotatably sleeved onto said rotating shaft and a plurality of draft tubes spaced around said axle tube and respectively connected to the respective said diversion space of said stator iron core, said draft tubes of said terminal block and said diversion space of said stator iron core forming said oil guide passage.