Electric fuel pump assembly

Abstract

The invention provides an electric fuel pump assembly, which comprises a bottom barrel, an electric fuel pump, a fuel level sensor, a fuel outlet pipe and a fuel return pipe. The electric fuel pump is arranged in the bottom barrel; the bottom of the bottom barrel is provided with a one-way fuel inlet valve; the fuel outlet pipe is connected with the fuel outlet of the electric fuel pump; the top end of the electric fuel pump assembly is provided with an upper cover which is matched with a fuel tank port, and the fuel outlet of the fuel outlet pipe and the fuel inlet of the fuel return pipe are arranged on the upper cover of the fuel tank port; the fuel return pipe is connected with a pressure regulating valve; the fuel level sensor is fixed on the inner shell of the bottom barrel; and a combined wiring box is arranged on the upper cover of the fuel tank port, and the wire of the fuel level sensor and the wire of the electric fuel pump are connected into the combined wiring box through connector clips. The invention not only realizes the centralized arrangement of the pressure regulating valve and the fuel level sensor, but also has the function of fuel storage. Moreover, the invention has the advantages of compact structure and convenient installation and maintenance, saves the cost and reduces the chance of fuel leakage.

Description

technical field [0001] The invention relates to an automobile fuel pump component, in particular to an electric fuel pump assembly. Background technique [0002] The prior art automobile electric fuel pump assembly has the following technical features: [0003] In terms of the installation method of the fuel pump assembly: the fuel pump assembly is fixed on the fuel tank port through a screw cap, connected with the fuel pump oil pipeline through a rubber tube, and then fixed by a clamp; or the fuel pump assembly is buckled by a flange plate On the cover of the fuel tank port, and then fixed by screws. These two methods all have the problems of slow installation speed and difficult maintenance, and also take up a large space. [0004] In the installation mode of the pressure regulating valve, the prior art is that the pressure valve is installed at the end of the fuel delivery pipe, close to the engine, and excess fuel is returned to the fuel tank through the oil return pip...

AI Technical Summary

Problems solved by technology

[0007] The present invention solves the problems in the prior art that the installation speed of the fuel pump assembly is slow and maintenance is difficult; the pressure regulating valve is close to the engine and has a short service life; the installation method of the oil level sensor is relatively complicated and easily causes oil leakage; To solve technical problems such as cavitation phenomenon, provide an electric fuel pump assembly with reasonable structure, convenient maintenance and more complete functions

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