초록 ▼

An add-on electric fuel pump having numerous advantageous features including an improved manner of replacing the seal at the shaft on the electric motor side of the pump, a versatile mounting bracket, and a fuel reservoir member having a plurality of chambers which permit internal bypassing of the f

An add-on electric fuel pump having numerous advantageous features including an improved manner of replacing the seal at the shaft on the electric motor side of the pump, a versatile mounting bracket, and a fuel reservoir member having a plurality of chambers which permit internal bypassing of the fuel, thus avoiding a return line to the fuel tank. The fuel reservoir member is formed with a set of fuel chambers which cooperate with the pump to permit internal turbulent bypassing of the fuel, thus improving cooling and avoiding vapor lock.

대표청구항 ▼

In a fuel pump, the combination comprising a fuel reservoir member, said fuel reservoir member being formed with a plurality of fuel chambers, said chambers comprising an inlet chamber and an outlet chamber, means to supply fuel to said inlet chamber, means to deliver fuel from said outlet chamber t

In a fuel pump, the combination comprising a fuel reservoir member, said fuel reservoir member being formed with a plurality of fuel chambers, said chambers comprising an inlet chamber and an outlet chamber, means to supply fuel to said inlet chamber, means to deliver fuel from said outlet chamber to a point of use, said fuel reservoir member chambers also including a bypass chamber, means interconnecting said bypass chamber with said outlet chamber; said fuel pump also comprising pump means interconnecting said inlet chamber and said outlet chamber and adapted to suck fuel from said fuel supply means into said inlet chamber, through said pump means, out said outlet chamber, and to said fuel delivery means; said bypass chamber and said pump means providing two substantially separate paths of fuel flow in said fuel reservoir member, bypass plunger means normally closing off the flow of fuel through said bypass chamber, one of said substantially separate paths including said fuel supply means and said fuel delivery means when said bypass plunger means is closed, the second of said substantially separate paths including said bypass chamber when said bypass plunger means is open, and all of said chambers and said interconnecting means therebetween being configured so as to create turbulence in the flow of any fuel supplied to said outlet chamber by said pump means and bypassed through said bypass chamber and said interconnecting means, whereby all of the fuel passing through said fuel pump remains below its vaporization temperature to thereby prevent vapor lock of said fuel pump, said fuel pump comprising an electric motor portion and a pump portion, said electric motor portion comprising a drive shaft extending into said pump portion, said fuel pump also comprising a mounting bracket, said mounting bracket comprising a flange portion formed with a round opening, vibration damper means in said flange portion round opening, means to sandwich said flange between said electric motor and said pump portions of said fuel pump with said electric motor and pump portions on opposite sides of said vibration damper means, and one of said electric motor and pump portions having a portion thereof extending into said flange round opening, whereby said fuel pump can be rotated within said opening around the axis thereof for adjustment of said fuel pump with respect to said mounting bracket.