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Fuel pump module

A fuel pump and component technology, applied in the direction of liquid fuel feeder, pump, pump control, etc., to achieve the effect of reducing pressure loss, easy maintenance, and easy disassembly and assembly

Active Publication Date: 2007-07-04
HONDA MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, there is a problem that the fuel passage whose length is substantially equal to the entire height of the fuel pump is required, and at the same time, the fuel pump as a whole tends to be enlarged due to the increase in structural parts.

Method used

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  • Fuel pump module
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Embodiment Construction

[0015] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is a sectional view of a fuel pump assembly 1 according to an embodiment of the invention. The fuel pump unit 1 is a device that pumps gasoline in the fuel tank to the fuel injection device and the like by the rotational driving force of the drive motor, and is attached to the steel plates 12 and 13 provided on the bottom plate constituting the fuel tank In the substantially circular opening on the upper body, substantially the entire fuel pump assembly 1 is accommodated.

[0016] The aforementioned fuel pump assembly 1 has a cylindrical upper case 4 and a lower case 36 formed of hard resin or the like. A drive motor is housed in the upper case 4 and is composed of a rotor 8 integrally rotating with the output shaft 6 and a stator 7 disposed on the inner peripheral side of the upper case 4 . The impeller 9 is fixedly supported at ...

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Abstract

A fuel pump module is provided in which a fuel passage is shortened, the loss of pressure is inhibited and the whole module can be small-sized. The fuel pump module (1) is attached to a bottom plate of a fuel tank and is provided with a drive motor having an output shaft (6), an impeller (9) attached on the side of one end of the output shaft (6) and an on-demand pressure regulator (30) for controlling pressure generated in a fuel passage (19). An inlet (15) is provided on the side of a lower end of an upper case (4) forming the fuel pump module (1). The impeller (9) practices a counter flow system in which fuel is taken in from the side of the bottom plate of the fuel tank and is discharged from the side of the bottom plate of the fuel tank, and the on-demand pressure regulator (30) is arranged in a lower case (36) in the vicinity of the impeller (9). The upper case (4) and the lower case (36) are detachably connected by the fitting of a snap fitting (5) and a stopper (35).

Description

technical field [0001] The present invention relates to a fuel pump assembly, and more particularly, to a fuel pump assembly that can reduce the size of the entire assembly while shortening a fuel passage and suppressing pressure loss. Background technique [0002] Conventionally, in a motor-driven fuel pump that pressurizes fuel to a fuel injection device or the like, a structure in which the entire fuel pump or substantially the entire fuel pump is arranged in a fuel tank is known. [0003] Patent Document 1 discloses a motor-type fuel pump for vehicles, wherein the fuel pump is mounted on the top plate side of the fuel tank, and at the same time, a suction port is provided at the lower end of the fuel pump, and the fuel pump is fixed and supported on the drive motor. The impeller on the rotating shaft rotates, sucks fuel upward, and discharges fuel from a discharge port provided at the upper end of the fuel pump while lubricating each component constituting the drive moto...

Claims

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Application Information

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IPC IPC(8): F02M37/10
CPCF02M37/10F02M37/14F04D5/002F04D15/005
Inventor 上野正树林彻
Owner HONDA MOTOR CO LTD